JAJSG99 September 2018 ADS1235
PRODUCTION DATA.
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
ANALOG INPUTS | |||||||
Absolute input current | PGA mode, V(AINx) = 2.5 V | 4 | 6 | nA | |||
PGA bypass | 200 | ||||||
Absolute input current drift | 0.01 | nA/°C | |||||
Differential input current | PGA mode, VIN = 39 mV | ±0.1 | nA | ||||
PGA mode, VIN = 2.5 V | –3 | ±1 | 3 | ||||
PGA and Chop modes, VIN = 2.5 V(5) | ±5 | ||||||
PGA bypass, VIN = 2.5 V | ±40 | ||||||
Differential input current drift | 0.05 | nA/°C | |||||
Differential input impedance | PGA mode | 1 | GΩ | ||||
PGA bypass | 50 | MΩ | |||||
Crosstalk | 0.1 | µV/V | |||||
PGA | |||||||
Gain settings | 1, 64, 128 | V/V | |||||
Antialias filter frequency | CCAPP, CAPN = 4.7 nF | 60 | kHz | ||||
Output voltage monitor | Low threshold | AVSS + 0.2 | V | ||||
High threshold | AVDD – 0.2 | ||||||
PERFORMANCE | |||||||
Resolution | No missing codes | 24 | Bits | ||||
Equivalent input noise density | Gain = 64 and 128 | 8 | nV/√Hz | ||||
DR | Data rate | 2.5 | 7200 | SPS | |||
Noise performance | See Table 1 | ||||||
INL | Integral non-linearity | Gain = 1, 64 and 128 | –10 | ±2 | 10 | ppmFSR | |
VOS | Offset voltage | TA = 25°C | –350 / Gain – 5 | ±50 / Gain | 350 / Gain + 5 | µV | |
Chop mode | –0.5 / Gain – 0.05 | ±0.2 / Gain | 0.5 / Gain + 0.05 | ||||
After calibration | on the level of noise | ||||||
Offset voltage drift | Gain = 1 | 100 | 350 | nV/°C | |||
Gain = 64 and 128 | 10 | 50 | |||||
Chop mode, gain = 1, 64 and 128 | 1 | 5 | |||||
GE | Gain error | TA = 25°C | –0.5% | ±0.05% | 0.5% | ||
After calibration | on the level of noise | ||||||
Gain drift | 0.5 | 4 | ppm/°C | ||||
NMRR | Normal-mode rejection ratio(1) | See Table 5 | |||||
CMRR | Common-mode rejection ratio(2) | Data rate = 20 SPS | 130 | dB | |||
Data rate = 400 SPS | 105 | 115 | |||||
PSRR | Power-supply rejection ratio(3) | AVDD and AVSS | 90 | 100 | dB | ||
DVDD | 100 | 120 | |||||
INTERNAL OSCILLATOR | |||||||
fCLK | Frequency | 7.3728 | MHz | ||||
Accuracy | –2% | ±0.5% | 2% | ||||
VOLTAGE REFERENCE INPUTS | |||||||
Reference input current | 500 | nA | |||||
Input current vs voltage | 100 | nA/V | |||||
Input current drift | 0.1 | nA//V/°C | |||||
Input impedance | Differential | 5 | MΩ | ||||
Low voltage monitor | Threshold low | 0.4 | 0.6 | V | |||
TEMPERATURE SENSOR | |||||||
Sensor voltage | TA = 25°C | 122.4 | mV | ||||
Temperature coefficient | 420 | µV/°C | |||||
GENERAL-PURPOSE INPUTS/OUTPUTS (GPIOs)(6) | |||||||
VOL | Low-level output voltage | IOL = –1 mA | 0.2 · AVDD | V | |||
VOH | High-level output voltage | IOH = 1 mA | 0.8 · AVDD | V | |||
VIL | Low-level input voltage | 0.3 · AVDD | V | ||||
VIH | High-level input voltage | 0.7 · AVDD | V | ||||
Input hysteresis | 0.5 | V | |||||
DIGITAL INPUTS/OUTPUTS (Other than GPIOs) | |||||||
VOL | Low-level output voltage | IOL = –1 mA | 0.2 · DVDD | V | |||
IOL = –8 mA | 0.2 · DVDD | ||||||
VOH | High-level output voltage | IOH = 1 mA | 0.8 · DVDD | V | |||
IOH = 8 mA | 0.75 · DVDD | ||||||
VIL | Low-level input voltage | 0.3 · DVDD | V | ||||
VIH | High-level input voltage | 0.7 · DVDD | V | ||||
Input hysteresis | 0.1 | V | |||||
Input leakage | VIH or VIL | –10 | 10 | µA | |||
POWER SUPPLY | |||||||
IAVDD
IAVSS |
Analog supply current | PGA bypass | 2.7 | 4.5 | mA | ||
PGA mode, gain = 64 and 128 | 4.3 | 6.5 | |||||
Power-down mode | 2 | 8 | µA | ||||
IDVDD | Digital supply current | 0.4 | 0.65 | mA | |||
Power-down mode(4) | 30 | 50 | µA | ||||
PD | Power dissipation | PGA mode | 23 | 35 | mW | ||
Power-down mode | 0.1 | 0.2 |