Other Parts Discussed in Thread: ADS1234, ADS1232, ADS1231, ADS1230, ADS1261
Hello,
Could you provide an overview and comparison of TI's Weigh Scale ADCs?
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Hello!
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.
Here's a link to other Precision ADC products from TI:
http://www.ti.com/data-converters/adc-circuit/precision-adcs/products.html
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 |
Input-Referred 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 |