ADS125H02 24-bit, 40kSPS, 2-ch delta-sigma ADC with ±10V high-voltage input, PGA, 2x IDACs, and low-drift Vref | TI.com

ADS125H02 (PREVIEW)

24-bit, 40kSPS, 2-ch delta-sigma ADC with ±10V high-voltage input, PGA, 2x IDACs, and low-drift Vref

 

Sample availability

Preproduction samples are available (PADS125H02IRHBR). Order now

Description

The ADS125H01 and ADS125H02 (ADS125H0x) are 24-bit, 40-kSPS, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) featuring a wide input range,
1-GΩ input impedance, programmable gain amplifier (PGA). The ADCs provide a wide input range, high-resolution measurement system in a compact 5-mm × 5-mm VQFN package.

The ADCs integrate an ±18-V PGA and a precision voltage reference with a low-noise, 24-bit ADC. The ADCs provide programmable input ranges from ±20 mV to ±20 V that, in many cases, eliminate the need for external attenuation. The differential-input ADC accepts single-ended input configurations with little loss of total measurement resolution.

The digital filter provides simultaneous 50-Hz and
60-Hz line cycle rejection with single-cycle settled conversions for data rates of 20 SPS and less.

Signal and reference monitors, a temperature sensor, and CRC data verification enhance data reliability.

The ADS125H01 and ADS125H02 are pin-compatible devices and are fully specified over the –40°C to +125°C temperature range.



Features

  • Wide input range, 24-bit delta-sigma ADC
  • 1-GΩ input impedance PGA
  • Programmable input range: ±20 mV to ±20 V
  • Absolute input voltage range to ±15.5 V
  • High Performance:
    • 100-dB Common Mode Rejection Ratio
    • 5-nV/°C Offset Drift
    • 1-ppm/°C Gain Drift
    • 2-ppmFSR INL
  • Programmable data rate: 2.5 SPS to 40000 SPS
  • External or internal 2.5-V reference operation
  • Simultaneous 50-Hz and 60-Hz rejection mode
  • Signal and reference voltage monitors
  • Cyclic redundancy check (CRC)
  • Sensor excitation current sources (H02)
  • External multiplexer drive GPIOs (H02)
  • 5-mm × 5-mm VQFN package

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Parametrics

Compare all products in Precision ADCs (<=10MSPS) Email Download to Excel
Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) Rating
ADS125H02 Order now 24     19.2     2     SPI     -40 to 125     VQFN | 32     8.90 | 1ku     45     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     Delta-Sigma     Differential
Single-Ended    
Multiplexed     Ext
Int    
50/60 Hz Rejection
Excitation Current Sources (iDACs)
GPIO
Oscillator
PGA
Temp Sensor    
15.5     0     -18
0    
18
36    
2.7     5.25     Catalog    
ADS124S08 Order now 24     4     12     SPI     -50 to 125     TQFP | 32
VQFN | 32    
5.25 | 1ku     1.75     32TQFP: 49 mm2: 7 x 7 (TQFP | 32)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    
Delta-Sigma     Differential
Single-Ended    
Multiplexed     Ext
Int    
50/60 Hz Rejection
Excitation Current Sources (iDACs)
GPIO
Oscillator
PGA
Temp Sensor    
2.625
5.25    
-2.625
0    
2.7     5.25     2.7     3.6     Catalog    
ADS1261 Order now 24     40     10     SPI     -40 to 125     VQFN | 32     6.80 | 1ku     24     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     Delta-Sigma     Differential
Single-Ended    
Multiplexed     Ext
Int    
50/60 Hz Rejection
Excitation Current Sources (iDACs)
GPIO
Oscillator
PGA
Temp Sensor    
2.5
5    
-2.5
0    
-2.5
4.75    
2.5
5.25    
2.7     5.25     Catalog