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ADS1261: Weight scale solution

Alex Chen9
Expert 1075 points
Part Number: ADS1261
Other Parts Discussed in Thread: ADS1235, , ADS1231, ADS1234, ADS1232, ADS1230

hi sir

i see many TI ADC for weight scale

ex:ADS1231,ADS1235,ADS1261

Do you have any comp table for me reference?

thanks

  • 0
    TI__Mastermind 35241 points

    Hi Alex,

    Below is a comparison table of the most important specifications for our weigh scale ADCs. Please let me know if you have any additional questions about any of these products or specifications.

    Parameter

    Units

    Conditions

    ADS1235

    ADS1234

    ADS1232

    ADS1231

    ADS1230

    ADS1261

    Resolution

    Bits

    24

    24

    24

    24

    20

    24

    Output Date Rate

    SPS

    (min / max)

    2.5 / 7200

    10 / 80

    10 / 80

    10 / 80

    10 / 80

    2.5 / 40,000

    Input Channels

    (Differential)

    3

    4

    2

    1

    1

    5

    External VREF Inputs

    2

    1

    1

    1

    1

    2

    Package Type

    VQFN-32

    TSSOP-28

    TSSOP-24

    SOIC-16

    TSSOP-16

    VQFN-32

    Package Size

    5 mm x 5 mm

    6.4 mm x 9.7 mm

    4.4 mm x 7.8 mm

    6 mm x 9.9 mm

    4.4 mm x 5 mm

    5 mm x 5 mm

    Analog Supply Range

    (Unipolar)

    (Bipolar)

    4.75 V to 5.25 V

    ±2.5 V

    2.7 V to 5.3 V

    -

    2.7 V to 5.3 V

    -

    3 V to 5.3 V

    -

    2.7 V to 5.3 V

    -

    4.75 V to 5.25 V

    ±2.5 V

    Offset Error Drift

    nV/°C

    (typ / max)

    (G = 128)

    10 / 50

    ±10 / -

    ±10 / -

    ±20 / -

    ±10 / -

    10 / 50

    Gain Error Drift

    ppm/°C

    (typ / max)

    0.5 / 4

    ±2.5 / -

    ±2.5 / -

    ±2 / -

    ±4 / -

    0.5 / 4

    INL

    ppm

    (typ / max)

    ±2 / ±10

    ±4 / -

    ±4 / -

    ±8 / -

    ±6 / -

    ±3 / ±12

    ENOB

    bits

    (10 SPS, G = 128)

    22.9

    22.0

    22.0

    19.8

    19.8

    22.9

    Input Noise

    nVRMS

    (10 SPS, G = 128)

    10

    17

    17

    40

    53

    12

    PGA Gains

    1, 64, 128

    1, 2, 64, 128

    1, 2, 64, 128

    128

    64, 128

    1 to 128

    AC Excitation

    Yes

    -

    -

    -

    -

    Yes

    Auto-Zero Mode

    Yes

    -

    -

    -

    -

    Yes

    Signal Monitors

    Yes

    -

    -

    -

    -

    Yes

    Low VREF Monitor

    Yes

    -

    -

    -

    -

    Yes

    Power Consumption

    mA

    (typ)

    4.7

    1.5

    1.5

    1

    1

    4.7

    Operating Temp. Range

    -40°C to +125°C

    -40°C to +105°C

    -40°C to +105°C

    -40°C to +85°C

    -40°C to +85°C

    -40°C to +125°C
  • 0 in reply to Bryan Lizon86
    Expert 1075 points

    hi Bryan

     

    thanks for you reply

    Could  I know the develop story during the list ADC?

     

  • 0 in reply to Alex Chen9
    TI__Mastermind 35241 points

    Hi Alex,

    I'm sorry, I do not fully understand your question. Can you please clarify what you want?

    The ADS1235 is the latest generation of weigh scale ADCs from TI, with the lowest noise and highest speed, if that is what you are asking.