https://e2e.ti.com/support/data-converters-group/data-converters/<p style="display:none;">blank</p>en-USTelligent Community 13https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651243/ads124s08-ads124s08-10x-slower-settling-than-expected/6369605Wed, 03 Jun 2026 18:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d1ea7efc-e03e-4f99-a271-97dbb3843c1csam waldmanHi Dale - Totally agree. The meas_type enumerate called &quot;TYPE_THREE_WIRE&quot; is a legacy mis-naming we have been meaning to correct. Or are you referring to something else? Are we configuring the registers incorrectly for a two wire measurement? Thanks, samhttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1649242/afe4404-optical-sensor-calibration/6369582Wed, 03 Jun 2026 18:30:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d7c45c39-a5ab-4555-97f9-634aefef404aPawel PotokHi Payton, I&#39;m using SFH7072 biosensor. Would you be so kind to propose any parameters against which I can optimize the I_PLETH? Regards,https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651889/ads1261-ads1261-clarification-on-achievable-bipolar-full-scale-range-with-limited-supply-rails/6369579Wed, 03 Jun 2026 18:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:59723278-3c16-4caa-a0fa-cc04bfe298bdMaggie LeeHi Ramana, There are absolute range limits for the reference: You&#39;re also still limited by the absolute analog input range: If you&#39;re not bypassing the PGA, then you&#39;re limited to a range of AVSS+0.3 &lt; VAINP/N &lt; AVDD-0.3 or a range of +/-2.2 in your case. So if your reference extends beyond that range, you&#39;ll never reach a full-scale code. Thanks, Maggiehttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651243/ads124s08-ads124s08-10x-slower-settling-than-expected/6369559Wed, 03 Jun 2026 18:18:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c1a35458-b40f-4066-bd01-5abf2ce00bdbDale LiHi JSR, Thanks for sharing your register configurations. You are using 3 analog input channels (1 IDAC+2 inputs) for each RTD, but your connection is actually 2-wire RTD measurement. Look forward to your new raw data. BR, Dalehttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1652085/ads7038-ads7038-auto-sequence-with-crcWed, 03 Jun 2026 17:00:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:789ca0e9-3ed7-459a-8381-b17d8529215eA EPart Number: ADS7038 Hi! I am trying to start ADC in auto-sequence mode with CRC. Fix pattern is turn on to check the data. CRC_EN bit is set in the GENERAL_CFG. Then I read 4 bytes and permanently receive A5 A0 30 00. Is it correct? I expected that CRC should be in 4th byte. Like A5 A0 00 . Next, if I append channel ID, I received A5 A5 2B 00. I expect A5 A5 00 . And finaly, I add OSR and receive A5 A5 2B 00 also. But with OSR turn on, the data should bi 16 bits length. The CRC is not on the 4th byte position. I expect smth like 0A 5A 50 . If I am right, CRC should be in the 4 byte? Help me to understand, please.HybridADS7038electric &amp; powertrain systemshttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651312/ads8688-review-of-ads8688-and-mspm0g3507-q1-for-12v-lead-acid-battery-block-cmu-design/6369437Wed, 03 Jun 2026 16:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:32cc4f55-ee0a-4391-82ce-acb8abb74672Jiyah StarksHello Deukkeun Jung, We would be happy to help here. That ADS8688 is a good ADC for this application, but we would recommend using the ADS8688 W which is pin-to-pin to the ADS8688 and supports higher input voltages (+/- 12V) and differential inputs. [quote userid=&quot;701629&quot; url=&quot;~/support/data-converters-group/data-converters/f/data-converters-forum/1651312/ads8688-review-of-ads8688-and-mspm0g3507-q1-for-12v-lead-acid-battery-block-cmu-design&quot;] 1. Suitability of ADS8688 for 12V lead-acid battery block voltage measurement Is ADS8688 suitable as an ADC for measuring the voltage of 12V lead-acid battery blocks? The voltage of each 12V lead-acid battery block may vary depending on operating conditions, approximately from below 10V to around 15V. Therefore, we are considering using a voltage divider circuit to scale the battery voltage into the ADS8688 input range. [/quote] A voltage divider would be needed for this ADC. The input to the ADS8688W is also resistive (1MΩ) so it makes it easier to scale down and accommodate larger voltage ranges. This document explains this process and also covers some error calibration techniques: Extending Input Voltage Range and Understanding Associated Errors for ADC With Integrated Front End [quote userid=&quot;701629&quot; url=&quot;~/support/data-converters-group/data-converters/f/data-converters-forum/1651312/ads8688-review-of-ads8688-and-mspm0g3507-q1-for-12v-lead-acid-battery-block-cmu-design&quot;] 2. Recommended input circuit for 12V battery voltage measurement If ADS8688 is suitable, could you recommend a proper input circuit structure for this application? Specifically, we would like guidance on: • Recommended voltage divider configuration • Input RC filter design • Input protection circuit • Protection against transient voltage, reverse connection, or abnormal battery conditions • Any layout precautions for accurate battery voltage measurement 3. Temperature measurement using ADS8688 We are also considering measuring battery temperature using NTC thermistors or temperature sensor outputs. Is it appropriate to use some ADS8688 channels for battery temperature measurement together with voltage measurement? If so, are there any recommended circuit examples for NTC or analog temperature sensor input to ADS8688? [/quote] I have included some documentation that discuss these topics in more detail. Varied input range: Extending Input Voltage Range and Understanding Associated Errors for ADC With Integrated Front End Open circuit detection: Circuit for detecting input floating on ADS8681 ADC Input protection: Input Protection for High-Voltage ADC Circuit with TVS Diode Input RC design: Reducing effects of external RC filter circuit on gain and drift error for integrated analog front ends (AFEs): &#177;10V NTC Temp Sensing conditioning circuit: Temperature Sensing with NTC Circuit [quote userid=&quot;701629&quot; url=&quot;~/support/data-converters-group/data-converters/f/data-converters-forum/1651312/ads8688-review-of-ads8688-and-mspm0g3507-q1-for-12v-lead-acid-battery-block-cmu-design&quot;] 4. Alternative TI ADC or AFE recommendation For monitoring multiple 12V lead-acid battery blocks, is there any TI ADC or AFE device that would be more suitable than ADS8688? We are especially interested in devices suitable for: • 12V battery block voltage monitoring • UPS / rectifier battery systems • Isolated CMU-based architecture • Multi-board battery monitoring systems [/quote] As mentioned, we would recommend the ADS8688W for this application. We also have the ADS9324C that could also be of interest releasing soon. I will follow up via email with more information on this. [quote userid=&quot;701629&quot; url=&quot;~/support/data-converters-group/data-converters/f/data-converters-forum/1651312/ads8688-review-of-ads8688-and-mspm0g3507-q1-for-12v-lead-acid-battery-block-cmu-design&quot;] 5. Suitability of MSPM0G3507-Q1 as local CMU MCU We are considering MSPM0G3507-Q1 as the local MCU on each 12V CMU board. The MCU would handle: • SPI communication with ADS8688 • Measurement data processing • CMU board ID management • Local diagnostics • Communication control • Isolated CAN or isolated RS-485 communication with the BMU Would MSPM0G3507-Q1 be a suitable MCU for this CMU role? If there is a more recommended TI MCU for this type of CMU design, please let us know. [/quote] The ADS8688W has SPI and a max SCLK speed of 17MHz, so very much within the MCU capable speeds. [quote userid=&quot;701629&quot; url=&quot;~/support/data-converters-group/data-converters/f/data-converters-forum/1651312/ads8688-review-of-ads8688-and-mspm0g3507-q1-for-12v-lead-acid-battery-block-cmu-design&quot;] If possible, please also provide or guide us to the following resources: • ADS8688 datasheet, application notes, and reference schematics • Recommended input circuit examples for 12V battery voltage measurement • ADS8688 EVM part number and purchase information • ADS8688 sample code or firmware examples • MSPM0G3507-Q1 development board and example code • TI recommended BMS architecture documents for lead-acid batteries, UPS, rectifiers, or ESS applications [/quote] Datasheet: https://www.ti.com/lit/ds/symlink/ads8688w.pdf EVM: https://www.ti.com/tool/ADS8688EVM-PDK or leverage the BoosterPack ™ ( BOOSTXL-ADS8688W ) which is compatible with the ADS8688W that can be used with the MSPM0 LaunchPad. We are still currently working on releasing the example code for this device. I will follow up on our other ADC offerings via email as mentioned previously. We can also discuss any layout recommendation for your application then. Regards, Jiyahhttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1652068/adc12qj1600-jesd204c-ipWed, 03 Jun 2026 16:06:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:36b3c565-23a8-4c86-bbc9-0c27f6a7503cSandeep KumarPart Number: ADC12QJ1600 Hi we are developing a 4 channel spectrum analyzer, for our intial system design and Hardware workflow in vivado, we require JESD204C IP from Texas Instruments. I request you to please provide the Vivado JESD204C IP for ADC12QJ1600. Thanks, and Regards. Sandeep KumarADC12QJ1600Aerospace &amp; Defensehttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651884/ads112c04-adc--use-of-drdy-pin/6369315Wed, 03 Jun 2026 15:49:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b1114397-192b-4d97-bf2f-97e987dd6fe8Andrew KalthoffHi Ramakrishna Raja C, Thank you for your interest in our Precision ADCs. Yes you can use the ADS112C04 without connecting the DRDYn pin. Here is the &quot;Unused Inputs and Outputs&quot; section of the data sheet that explain what to do with the DRDYn pin if left unconnected. When using 3x ADS112C04 you cannot combine the DRDYn to a single GPIO since they are push-pull output. One way to monitor for a new conversion result is to periodically read the DRDY bit in the configuration register. Another way to detect if new conversion data are available is through the use of the conversion data counter word. In this mode, the host periodically requests data from the device using the RDATA command and checks the conversion data counter word against the conversion data counter word read for the previous data received. More information about the can be found in section 8.5.4 of the datasheet Reading Data and Monitoring for New Conversion Results. The ADS112C14 , the next generation of the ADS112C04, which might also be of interest. Here are some of the key features: • Low power consumption (as low a 57μA) • Wide supply voltage range: – Analog: 1.74V to 3.6V – Digital: 1.65V to 3.6V • Programmable gain: 0.5 to 256 • Programmable data rate (up to 64kSPS) and speed modes • Simultaneous 50Hz and 60Hz rejection at 20 or 25SPS with single-cycle settling digital filter • Analog multiplexer with 8 independently selectable inputs • Dual-matched programmable current sources (1uA to 1mA) • Internal programmable voltage reference: 1.25V or 2.5V with 25ppm/&#176;C (max) drift • Four general-purpose I/Os (push-pull or opendrain output) • DRDYn can be configured as open-drain output Regards, Andrewhttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651699/afe4404evm-afe4404evm-leds-light-up-and-tx-pins-have-waveform-but-adc_rdy-has-no-signal-and-ppg-output-is-flat-line/6369209Wed, 03 Jun 2026 14:54:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:7b7ef865-4523-4015-9ea9-d31b3acbb60cPayton SchubelHello, I have followed up with you via email. Regards, Paytonhttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651833/afe4404evm-afe4404evm-adc_rdy-pin-has-no-signal-clk-and-resetz-are-ok/6369208Wed, 03 Jun 2026 14:54:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a3738e9a-3046-4070-9408-4fcbb9438930Payton SchubelHello, I have followed up with you via email. Regards, Paytonhttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651999/ads114s08-reading-drdy-through-spiWed, 03 Jun 2026 14:01:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3add27d6-b867-449d-986b-5a3092cfa3aaDavid DudleyPart Number: ADS114S08 I&#39;m using a ADS114S08 in a product. I think using this chip may have been a mistake at this point, but I needed a minimum of 12 analogs for this product, and this chip fit the bill. I have a complete SPI interface to this part, but DRDY- is not connected as I have no I/O bit to connect it to. Heres my problem. I can successfully initiate a conversion on the device, and if I delay long enough, read the appropriate value (not sure if it&#39;s correct at this point). As far as I have been able to tell however, I have no way to read when the data is available from the chip. I do not have direct control of the CS- for the chip. I can only make complete SPI transfers (bracketed by CS-). I was hoping all I would need to do is a transaction using a NOP command, but appears that is wrong. How do I read DRDY- in a SPI transaction?Industrial AutomationADS114S08https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651998/ads124s08-excel-calc-tool-unexpected-behavior-of-the-rtd-calculator-accuracy-estimationWed, 03 Jun 2026 14:00:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:622a66f9-824a-4d8f-ab91-23b4fd212e59Luigi GiuntiPart Number: ADS124S08-EXCEL-CALC-TOOL Dear Support, While using the RTD Calculator for my circuit, I noticed a behavior that I am unable to explain. The accuracy calculated by the tool is exactly the same for 2-wire, 3-wire, and 4-wire RTD configurations. In fact, in some cases the reported accuracy for the 4-wire configuration is slightly worse than for the 2-wire or 3-wire configurations, which is contrary to my expectations. Since a 4-wire measurement should theoretically eliminate the error contribution due to lead resistance, I would expect it to provide equal or better accuracy than the other configurations.ADS124S08-EXCEL-CALC-TOOLhttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651889/ads1261-ads1261-clarification-on-achievable-bipolar-full-scale-range-with-limited-supply-railsWed, 03 Jun 2026 10:40:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2f7bf7de-556f-4ba8-8851-a8afcb2e2a00Ramana APart Number: ADS1261 Hi Team, I am using the ADS1261 ADC in a bipolar measurement application and need clarification on the achievable full-scale input range. System Conditions: Analog supply: AVDD = +2.5 V AVSS = −2.5 V ADC configured for: Bipolar differential measurements Gain = 1 Input signal range: Approximately up to &#177;2.4 V differential (within supply rails) Reference Configuration: I am evaluating using a differential reference such that: VREF = 2.9 V or 3.1 V (VREFP − VREFN) As per the datasheet: FSR = 2 &#215; VREF / Gain This suggests: For VREF = 2.9 V -&gt; FSR = 5.8 V (&#177;2.9 V) For VREF = 3.1 V -&gt; FSR = 6.2 V (&#177;3.1 V) My Questions: With AVDD = +2.5 V and AVSS = −2.5 V, is it valid to configure the reference such that: VREF = 2.9 V or 3.1 V and expect the ADC to operate with a corresponding bipolar FSR (&#177;2.9 V or &#177;3.1 V)? Or, is the usable full-scale input range effectively limited by the supply rails, regardless of the reference voltage? If the reference is set higher than the allowable input swing (due to AVDD/AVSS limits): Will the ADC still scale the conversion based on the full VREF? Or will this cause clipping/saturation before reaching full-scale code? Is there a recommended method to: Maintain accurate code scaling when the input range is constrained by supply rails, but a larger reference is used?ADS1261https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651884/ads112c04-adc--use-of-drdy-pinWed, 03 Jun 2026 10:26:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0895090b-ae79-456a-9333-3c3f1c19ee96Ramakrishna Raja CPart Number: ADS112C04 Hi Team, We are using ADS112C04 in our design was wondering when DRDY pin is really required(which mode). Can I use this ADC without DRDY Pin? If DRDY is required: I am using 3x ADC in my design can I share a single GPIO and connect to HostADS112C14Industrial AutomationADS112C04https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651833/afe4404evm-afe4404evm-adc_rdy-pin-has-no-signal-clk-and-resetz-are-okWed, 03 Jun 2026 08:53:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:47b8d843-7236-4d40-8acd-4b9ad4136090yb baiPart Number: AFE4404EVM Other Parts Discussed in Thread: AFE4404 I am currently using the AFE4404EVM with the default NJL5513R sensor board (resistors R2, R4, R6, R8, R10 are correctly populated). The EVM firmware version is 1.3 . I am using the TI GUI for control and observation. Observations: I2C and basic functions: I2C communication works; I can read from and write to registers successfully. The LEDs on the sensor board light up as expected. CLK pin (C2) — OK: A valid clock signal is present at the CLK pin (C2). I have tested both external clock mode and internal oscillator mode (by setting OSC_ENABLE = 1 in CONTROL2). In both cases, the clock signal is observed correctly on the CLK pin. RESETZ pin — High: The RESETZ pin is held at a stable high level; the device is not in hardware power‑down mode. TX pins — functional: The TX1 , TX2 , and TX3 pins show periodic pulse waveforms at the configured PRF (e.g. 100 Hz), confirming that the LED driver section is producing output. ADC_RDY pin — NO SIGNAL: At the designated test points (R18 resistor, TP1 test point) and at the ADC_RDY pin (B2) of the AFE4404 itself, no signal is observed . The pin remains at a constant low level. As a result, the GUI displays a flat line for all LED channels (no PPG waveform). What I have already checked: Clock configuration: The CLK pin (C2) has a valid waveform; OSC_ENABLE has been set to both 0 and 1 (external / internal clock). Reset condition: RESETZ is high, and the device is not in reset. Power-down: CONTROL2 registers show PDNAFE = 0 and PDNRX = 0; the device is not in software power-down. Timing engine: TIMEREN (CONTROL1[8]) = 1. PROG_TG_EN: This bit is 0 (no alternate signal mapped to ADC_RDY). ADC_RDY pin measurement: I have measured directly at the AFE4404 B2 pin, at the R18 resistor (both sides), and at the TP1 test point – all are low. Issue: Despite a valid CLK input, a high RESETZ level, and the I2C configuration apparently working, the ADC_RDY pin never generates any pulse. The timing engine appears to be enabled, but the ADC_RDY output remains inactive. Request for Help: Could you please advise on: What additional conditions or register settings are required for the ADC_RDY pin to start pulsing? Are there any specific timing constraints (e.g., the ADCRSTx signals) that are mandatory for ADC_RDY generation, even when not all LED phases are used? Could a corrupted firmware (v1.3) cause the ADC_RDY to be silent while other functions (I2C, LED driving) remain operational? Any other debugging steps or test points to check? Thank you for your support.AFE4404EVMAFE4404Wearables (non-medical)https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651807/ads9234r-analog-input-leakage-current-maxWed, 03 Jun 2026 07:50:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4cbcf88c-6260-425a-9ef4-3874bda4baefIsao TakigasakiPart Number: ADS9234R Hi My customer want to estimate maximum value of analog input leakage current. Could you tell me it? In the datasheet, I found the typical value as shown in bvelow. Analog input leakage current : +/-1uA(typ) Best Regards, TakiADS9234RTest &amp; Measurementhttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651804/ads5263-request-for-component-quotationWed, 03 Jun 2026 07:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:246609aa-e8f8-48b2-99bd-13b209654911udya mudavathPart Number: ADS5263 Hi TI, Could you please provide the quotation, availability, and lead time for the below components? Please include: Unit Price MOQ (Minimum Order Quantity) Available Stock Lead Time Manufacturer Name Active part status. Your prompt response would be appreciated. QTY S No Current MFG name Component Description Current MPN Component EAU Footprint Equivalent part 1 TEXAS INSTRUMENTS IC A/D 16-BIT QFN64 R ADS5263IRGCR 26612 64-QFN (9x9) ADS5263IRGCT(In-Stock: 694) 2 TEXAS INSTRUMENTS IC AMP VAR 16-BIT A/D LLP32 R LMH6517SQX/NOPB 53224 LMH6517SQ/NOPB Regards, Udya Sr.system engineer.ADS5263https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651699/afe4404evm-afe4404evm-leds-light-up-and-tx-pins-have-waveform-but-adc_rdy-has-no-signal-and-ppg-output-is-flat-lineWed, 03 Jun 2026 03:02:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:05924df2-8185-4cbb-b56f-ab2c70843d11yb baiPart Number: AFE4404EVM I am using AFE4404EVM with default NJL5513R sensor (resistors R2,R4,R6,R8,R10 installed). Firmware v1.3. Symptoms: LEDs (green and red) light up. I2C communication works (registers read/write fine). At 10-pin connector J4, TX1 (~1.2Vpp), TX2/TX3 (~0.8Vpp) have periodic pulses at 100Hz PRF. However, at R18 (ADC_RDY) and TP1 test point, no signal (flat line). GUI shows flat line for all LED channels (no PPG waveform). Status log refreshes frequently. What I have checked: TIMEREN=1 (CONTROL1[8]). CONTROL2 (0x23) = 0x124018 (PDNAFE=0, DYNAMICx bits do not power down ADC). PROG_TG_EN=0 (not overriding ADC_RDY). Switched to internal oscillator (OSC_ENABLE=1) – no change. Software/hardware reset performed. Sensor board jumpers correct. Question: Since TX pins have output pulses but ADC_RDY is dead, what could prevent ADC_RDY from being generated? How can I debug this? Thank you.AFE4404EVMWearables (non-medical)https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651346/dac39rf10-output-fullscale-calc-full-schematics-for-trf1108-dac39rfevm/6368312Wed, 03 Jun 2026 02:10:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:12fc3a33-48c2-44a4-acc1-4ffa2ded59e3Keyur TejaniThanks, Bill. Adrian, Please find the User&#39;s Guide for TRF1108+DAC EVM attached. I am looking into why the correct User&#39;s Guide was not available on the EVM page despite the right one being associated in our release procedure. Irrespective will make this available on the EVM page. Let me get back tomorrow on the design files. I want to cross check a few things before sending over. Keyur e2e.ti.com/.../TRF1108_2D00_DAC39RFEVM-User_2700_s-Guide.pdfhttps://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1651346/dac39rf10-output-fullscale-calc-full-schematics-for-trf1108-dac39rfevm/6368299Wed, 03 Jun 2026 01:49:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:fa3fd2f9-30aa-4393-a49a-504162a190b4Bill ClarkeHi Adrian - Keyur Tejani will address this