SBASA22A september 2022 – july 2023 ADS131B26-Q1
PRODUCTION DATA
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
CURRENT MEASUREMENT ADCS (ADC1A, ADC1B) | ||||||
Resolution | 24 | Bits | ||||
Gain settings | 4, 8, 16, 32 | V/V | ||||
fDATA | Output data rate | fCLK = 8.192 MHz | 500 | 64k | SPS | |
Absolute input current | All data rates, all gains, global-chop enabled or disabled, VCPy = VCNy = 0 V | ±0.5 | nA | |||
Differential input current | All data rates, all gains, global-chop enabled or disabled, VCPy = VCNy = 0 V | –5 | ±1 | 5 | nA | |
Differential input impedance | All data rates, all gains, global-chop enabled or disabled | 1.8 | MΩ | |||
Offset error (input referred) | Gain = 4, global-chop disabled | ±1 | µV | |||
Gain = 8 to 32, global-chop disabled | ±15 | |||||
All gains, global-chop enabled | –1.5 | ±0.5 | 1.5 | |||
Offset drift | All gains, global-chop disabled | 20 | 100 | nV/°C | ||
All gains, global-chop enabled | 1 | 7 | ||||
Gain error | TA = 25°C, all gains, single-ended operation with CNy held at AGNDy, including initial accuracy of REFy | –0.15% | ±0.05% | 0.15% | ||
Gain drift | All gains, single-ended operation with CNy held at AGNDy, including drift of REFy | 5 | 20 | ppm/°C | ||
Gain long-term drift | 1000 hours at 85°C, all gains, including long-term drift of REFy |
±100 | ppm | |||
Gain match | Between gain settings | –0.12% | ±0.03% | 0.12% | ||
Noise (input referred) | Gain = 8, fDATA = 1 kSPS | 0.65 | µVRMS | |||
CMRR | Common-mode rejection ratio | At DC, global-chop disabled | 110 | dB | ||
At DC, global-chop enabled | 113 | |||||
PSRR | Power-supply rejection ratio | APWR at DC, global-chop enabled or disabled | 133 | dB | ||
DPWR at DC, global-chop enabled or disabled | 133 | |||||
AVDD at DC, global-chop enabled or disabled | 115 | |||||
IOVDD at DC, global-chop enabled or disabled | 131 | |||||
VOLTAGE AND TEMPERATURE MEASUREMENT ADCS (ADC2A, ADC2B) | ||||||
Resolution | 16 | Bits | ||||
Gain settings | 1, 2, 4 | V/V | ||||
Absolute input current | OSR2y = 64, all gains, VVxy = 0 V | ±0.2 | nA | |||
Differential input current | OSR2y = 64, all gains, VVxy = 0 V | ±0.4 | nA | |||
Differential input impedance | OSR2y = 64, all gains | 15 | MΩ | |||
OSR2y = 128, all gains | 30 | |||||
OSR2y = 256, all gains | 60 | |||||
OSR2y = 512, all gains | 120 | |||||
Offset error (input referred) | Gain = 1 | –350 | ±85 | 350 | µV | |
Gain = 2 and 4 | –25 | ±5 | 25 | |||
Offset drift | Gain = 1 | 60 | 300 | nV/°C | ||
Gain = 2 and 4 | 30 | 150 | ||||
Gain error | TA = 25°C, all gains, including initial accuracy of REFy |
–0.3% | ±0.1% | 0.3% | ||
Gain drift | All gains, including drift of REFy | 5 | 20 | ppm/°C | ||
Gain long-term drift | 1000 hours at 85°C, all gains, including long-term drift of REFy |
±100 | ppm | |||
Gain match | Between gain settings | –0.15% | ±0.06% | 0.15% | ||
CMRR | Common-mode rejection ratio | At DC | 95 | dB | ||
PSRR | Power-supply rejection ratio | APWR at DC | 103 | dB | ||
DPWR at DC | 103 | |||||
AVDD at DC | 91 | |||||
IOVDD at DC | 96 | |||||
BATTERY VOLTAGE MEASUREMENT ADCS (ADC3A, ADC3B) | ||||||
Resolution | 24 | Bits | ||||
Gain settings | 1, 2, 4 | V/V | ||||
fDATA | Output data rate | fCLK = 8.192 MHz | 500 | 64k | SPS | |
Absolute input current | fDATA = 1 kSPS, all gains, global-chop enabled or disabled, VVPy = VVNy = 0 V | ±0.1 | nA | |||
Differential input current | fDATA = 1 kSPS, all gains, global-chop enabled or disabled, VVPy = VVNy = 0 V | –2 | ±0.1 | 2 | nA | |
Differential input impedance | fDATA = 64 kSPS, all gains, global-chop enabled or disabled | 15 | MΩ | |||
fDATA = 16 kSPS, all gains, global-chop enabled or disabled | 60 | |||||
fDATA = 4 kSPS, all gains, global-chop enabled or disabled | 250 | |||||
fDATA = 1 kSPS, all gains, global-chop enabled or disabled | 1000 | |||||
Offset error (input referred) | All gains, global-chop disabled | –400 | ±80 | 400 | µV | |
All gains, global-chop enabled | –10 | ±3 | 10 | |||
Offset drift | All gains, global-chop disabled | 50 | 300 | nV/°C | ||
All gains, global-chop enabled | 4 | 15 | ||||
Gain error | TA = 25°C, all gains, single-ended operation with VNy held at AGNDy, including initial accuracy of REFy | –0.3% | ±0.1% | 0.3% | ||
Gain drift | All gains, single-ended operation with VNy held at AGNDy, including drift of REFy | 5 | 20 | ppm/°C | ||
Gain long-term drift | 1000 hours at 85°C, all gains, including long-term drift of REFy |
±100 | ppm | |||
Gain match | Between gain settings | –0.18% | ±0.06% | 0.18% | ||
Noise (input referred) | Gain = 4, fDATA = 1 kSPS | 3 | µVRMS | |||
CMRR | Common-mode rejection ratio | At DC, global-chop disabled | 114 | dB | ||
At DC, global-chop enabled | 120 | |||||
PSRR | Power-supply rejection ratio | APWR at DC, global-chop enabled or disabled | 123 | dB | ||
DPWR at DC, global-chop enabled or disabled | 123 | |||||
AVDD at DC, global-chop enabled or disabled | 93 | |||||
IOVDD at DC, global-chop enabled or disabled | 113 | |||||
PRECISION VOLTAGE REFERENCES (REFA, REFB) | ||||||
VREFA, VREFB |
Reference voltage | 1.25 | V | |||
Accuracy | TA = 25°C | –0.15% | ±0.05% | 0.15% | ||
Temperature drift | 3 | 15 | ppm/°C | |||
Output current | Source only, available for external loads on RCAPy pin |
250 | µA | |||
Short-circuit current limit | Sink or source | –10 | 10 | mA | ||
Start-up time | 1-μF capacitor on RCAPy, 0.01% settling | 8 | ms | |||
MAIN OSCILLATOR (OSCM) | ||||||
fOSCM | Frequency | 8.192 | MHz | |||
Accuracy | –2.5% | 2.5% | ||||
DIAGNOSTIC OSCILLATOR (OSCD) | ||||||
fOSCD | Frequency | 8.192 | MHz | |||
Accuracy | –2.5% | 2.5% | ||||
OVERCURRENT COMPARATORS (OCCA, OCCB) | ||||||
Offset error (input referred) | All gains | –500 | ±20 | 500 | µV | |
Gain error | All gains, including error of REFy | –0.5% | ±0.2% | 0.5% | ||
TEMPERATURE SENSORS (TSA, TSB) | ||||||
TSOffset | Output voltage | TA = 25°C | 118.4 | mV | ||
TSTC | Temperature coefficient | 410 | µV/°C | |||
COMMON-MODE OUTPUT BUFFERS (VCMA, VCMB) | ||||||
VCMA, VCMB | Common-mode output voltage | 0.75 | 0.78 | 0.81 | V | |
Output current | Sink or source | –1 | 1 | mA | ||
Short-circuit current limit | Sink or source | –5 | 5 | mA | ||
Capacitive load | 100 | pF | ||||
TEST DACS (TDACA, TDACB) | ||||||
Output voltage settings | 1 × VREFy / 40 2 × VREFy / 40 4 × VREFy / 40 9 × VREFy / 40 18 × VREFy / 40 36 × VREFy / 40 –4 × VREFy / 40 –9 × VREFy / 40 |
V | ||||
Accuracy | ±0.3% | |||||
Drift | Positive output voltages | 6 | 35 | ppm/°C | ||
Negative output voltages | 12 | 80 | ||||
OPEN-WIRE DETECTION CURRENT SOURCES AND SINKS (OWD1A, OWD1B, OWD2A, OWD2B, OWD3A, OWD3B) | ||||||
Current source settings | 4, 40, 240 | µA | ||||
Current sink settings | 4, 40, 240 | µA | ||||
Current source accuracy | ±8% | |||||
Current sink accuracy | ±8% | |||||
DIGITAL INPUTS/OUTPUTS (GPIO0A, GPIO1A, GPIO0B, GPIO1B) | ||||||
VIL | Logic input level, low | AGNDy | 0.3 AVDD | V | ||
VIH | Logic input level, high | 0.7 AVDD | AVDD | V | ||
VOL | Logic output level, low | IOL = –100 µA | 0.2 AVDD | V | ||
VOH | Logic output level, high | IOH = 100 µA | 0.8 AVDD | V | ||
IIN | Input current | AGNDy < VDigital Input < AVDD | –1 | 1 | µA | |
Short-circuit current limit | Sink or source | –8 | 8 | mA | ||
DIGITAL INPUTS/OUTPUTS (CSn, SCLK, SDI, SDO, RESETn, DRDYn, CLK, GPIO0/MHD, GPIO1, GPIO2/FAULT, GPIO3/OCCA, GPIO4/OCCB) | ||||||
VIL | Logic input level, low | DGND | 0.3 IOVDD | V | ||
VIH | Logic input level, high | 0.7 IOVDD | IOVDD | V | ||
VOL | Logic output level, low | IOL = –1 mA | 0.2 IOVDD | V | ||
VOH | Logic output level, high | IOH = 1 mA | 0.8 IOVDD | V | ||
IIN | Input current | DGND < VDigital Input < IOVDD | –1 | 1 | µA | |
Short-circuit current limit | Sink or source | –80 | 80 | mA | ||
CLOCK MONITORS | ||||||
fMCLK_WD_TH | Main clock (MCLK) watchdog frequency threshold | Watchdog indicates a fault when MCLK frequency drops below frequency threshold | 300 | kHz | ||
fOSCD_WD_TH | Diagnostic oscillator (OSCD) watchdog frequency threshold | Watchdog indicates a fault when OSCD frequency drops below frequency threshold | 300 | kHz | ||
MCLK_FAULT_TH | Main clock fault detection frequency threshold | Difference in clock frequencies between MCLK and OSCD to generate a fault | 10% | |||
POWER SUPPLY MONITORS | ||||||
AVDD_UV_TH | AVDD undervoltage threshold | 2.9 | 2.95 | 3.0 | V | |
AVDD_OV_TH | AVDD overvoltage threshold | 3.8 | 3.9 | 4.0 | V | |
IOVDD_UV_TH | IOVDD undervoltage threshold | IOVDD_UV_TH = 1b | 2.9 | 2.95 | 3.0 | V |
IOVDD_UV_TH = 0b | 4.2 | 4.3 | 4.4 | |||
IOVDD_OV_TH | IOVDD overvoltage threshold | IOVDD_OV_TH = 1b | 3.8 | 3.9 | 4.0 | V |
IOVDD_OV_TH = 0b | 5.6 | 5.75 | 5.9 | |||
DVDD_UV_TH | DVDD undervoltage threshold | 1.55 | 1.6 | 1.65 | V | |
DVDD_OV_TH | DVDD overvoltage threshold | 1.90 | 1.95 | 2.0 | V | |
AVDD_OSC_MAG | AVDD oscillation detection magnitude | Amplitude required to generate fault | 500 | mVpp | ||
AVDD_OSC_FREQ | AVDD oscillation detection input frequency | Oscillation frequency range to generate fault | 2 | 500 | kHz | |
IOVDD_OSC_MAG | IOVDD oscillation detection magnitude | Amplitude required to generate fault | 500 | mVpp | ||
IOVDD_OSC_FREQ | IOVDD oscillation detection input frequency | Oscillation frequency range to generate fault | 2 | 500 | kHz | |
DVDD_OSC_MAG | DVDD oscillation detection magnitude | Amplitude required to generate fault | 500 | mVpp | ||
DVDD_OSC_FREQ | DVDD oscillation detection input frequency | Oscillation frequency range to generate fault | 2 | 500 | kHz | |
AVDD_OTW_TH | AVDD overtemperature warning thresholds | –60 100 120 140 |
°C | |||
AVDD overtemperature warning threshold accuracy | ±2 | °C | ||||
IOVDD_OTW_TH | IOVDD overtemperature warning thresholds | –60 100 120 140 |
°C | |||
IOVDD overtemperature warning threshold accuracy | ±2 | °C | ||||
ADC2y power-supply readback attenuation factor | APWR | 103 | ||||
DPWR | 103 | |||||
AVDD | 4 | |||||
IOVDD | 4 | |||||
DVDD | 2 | |||||
ADC2y power-supply readback accuracy | OSR2y = 128, MUX2y_DELAY ≥ 256 × tMCLK | ±1% | ||||
AVDD_POR_TH | AVDD POR release threshold | 2.6 | 2.7 | 2.85 | V | |
IOVDD_POR_TH | IOVDD POR release threshold | 2.6 | 2.7 | 2.85 | V | |
DVDD_POR_TH | DVDD POR release threshold | 1.4 | 1.5 | 1.6 | V | |
FAULT MONITOR RESPONSE TIMES | ||||||
tp(AVDD_OV) | AVDD overvoltage detection response time | Delay time from AVDD exceeding AVDD overvoltage threshold to FAULT pin active | 4 | µs | ||
tp(IOVDD_OV) | IOVDD overvoltage detection response time | Delay time from IOVDD exceeding IOVDD overvoltage threshold to FAULT pin active | 4 | µs | ||
tp(DVDD_OV) | DVDD overvoltage detection response time | Delay time from DVDD exceeding DVDD overvoltage threshold to FAULT pin active | 4 | µs | ||
tp(AVDD_UV) | AVDD undervoltage detection response time | Delay time from AVDD dropping below AVDD undervoltage threshold to FAULT pin active | 4 | µs | ||
tp(IOVDD_UV) | IOVDD undervoltage detection response time | Delay time from IOVDD dropping below IOVDD undervoltage threshold to FAULT pin active | 4 | µs | ||
tp(DVDD_UV) | DVDD undervoltage detection response time | Delay time from DVDD dropping below DVDD undervoltage threshold to FAULT pin active | 4 | µs | ||
tp(AVDD_OSC) | AVDD oscillation detection response time | Delay time from AVDD oscillations exceeding AVDD oscillation threshold to FAULT pin active | 30 | µs | ||
tp(IOVDD_OSC) | IOVDD oscillation detection response time | Delay time from IOVDD oscillations exceeding IOVDD oscillation threshold to FAULT pin active | 30 | µs | ||
tp(DVDD_OSC) | DVDD oscillation detection response time | Delay time from DVDD oscillations exceeding DVDD oscillation threshold to FAULT pin active | 30 | µs | ||
tp(AVDD_CL) | AVDD current limit detection response time | Delay time from AVDD exceeding AVDD current limit threshold to FAULT pin active | 40 | µs | ||
tp(IOVDD_CL) | IOVDD current limit detection response time | Delay time from IOVDD exceeding IOVDD current limit threshold to FAULT pin active | 40 | µs | ||
tp(AVDD_OTW) | AVDD overtemperature warning response time | Delay time from AVDD exceeding AVDD overtemperature warning threshold to FAULT pin active | 300 | µs | ||
tp(IOVDD_OTW) | IOVDD overtemperature warning response time | Delay time from IOVDD exceeding IOVDD overtemperature warning threshold to FAULT pin active | 300 | µs | ||
tp(AVDD_POR) | AVDD POR detection response time | Delay time from AVDD dropping below AVDD POR threshold to FAULT pin active | 30 | µs | ||
tp(IOVDD_POR) | IOVDD POR detection response time | Delay time from IOVDD dropping below IOVDD POR threshold to FAULT pin active | 30 | µs | ||
tp(DVDD_POR) | DVDD POR detection response time | Delay time from DVDD dropping below DVDD POR threshold to FAULT pin active | 30 | µs | ||
tp(DGND_OPEN) | DGND open detection response time | Delay time from DGND pin disconnected to FAULT pin active | 4 | µs | ||
tp(AGNDy_OPEN) | AGNDy open detection response time | Delay time from AGNDy pin disconnected to FAULT pin active | 4 | µs | ||
tp(MEM_MAP_CRC) | Memory map CRC fault detection response time | Delay time from bit flip occurence in memory map to FAULT pin active | 69 | 138 | tOSCD | |
tp(REG_MAP_CRC) | Register map CRC fault detection response time | Delay time from bit flip occurence in register map to FAULT pin active | 1024 | 2048 | tOSCD | |
tp(MCLK_WD) | Main clock watchdog response time | Delay time from main clock watchdog timeout to FAULT pin active | 2 | µs | ||
tp(OSCD_WD) | Diagnostic oscillator watchdog response time | Delay time from diagnostic oscillator watchdog timeout to FAULT pin active | 2 | µs | ||
tp(MCLK_FAULT) | Main clock fault detection response time | Delay time from main clock fault detection to FAULT pin active | 4096 | tMCLK | ||
AVDD LDO | ||||||
AVDD | Output voltage | 3.1 | 3.3 | 3.5 | V | |
Load current | Available to external circuitry on the AVDD pin | 20 | mA | |||
Short-circuit current limit | 60 | mA | ||||
Load regulation | 1 | mV/mA | ||||
IOVDD LDO | ||||||
IOVDD | Output voltage | 3.1 | 3.3 | 3.5 | V | |
Load current | Available to external circuitry on the IOVDD pin | 20 | mA | |||
Short-circuit current limit | 60 | mA | ||||
Load regulation | 1 | mV/mA | ||||
SUPPLY CURRENTS | ||||||
IAPWR | APWR supply current | Power-down mode | 0.01 | mA | ||
Standby mode | 0.46 | |||||
Active mode, all ADCs disabled | 0.8 | |||||
Active mode, all ADCs enabled and converting (all features enabled, no external load on AVDD LDO) |
6.3 | 7.7 | ||||
APWR supply current per individual ADC | ADC1y enabled and converting, all gains, all data rates | 1.75 | ||||
ADC2y enabled and converting, all gains, all data rates | 0.5 | |||||
ADC3y enabled and converting, all gains, all data rates | 0.5 | |||||
IDPWR | DPWR supply current(1) | Power-down mode | 0.01 | mA | ||
Standby mode | 0.4 | |||||
Active mode, all ADCs disabled | 0.8 | |||||
Active mode, all ADCs enabled and converting (all features enabled, no external load on IOVDD LDO) |
1.1 | 1.7 | ||||
DPWR supply current per individual ADC(1) | ADC1y enabled and converting, all data rates | 0.06 | ||||
ADC2y enabled and converting, all data rates | 0.06 | |||||
ADC3y enabled and converting, all data rates | 0.06 | |||||
IAVDD | AVDD supply current | APWR shorted to AVDD, i.e. AVDD LDO bypassed. Active mode, all ADCs enabled and converting (all features enabled) |
6.3 | mA | ||
IIOVDD | IOVDD supply current(1) | DPWR shorted to IOVDD, i.e. IOVDD LDO bypassed. Active mode, all ADCs enabled and converting (all features enabled) |
1.1 | mA | ||
PD | Power dissipation | Active mode, all ADCs enabled and converting (all features enabled, no external load on IOVDD LDO) |
37 | mW |