Overview
The ADS122U04IPWR, produced by Texas Instruments, is a precision 24-bit analog-to-digital converter (ADC) designed to measure small sensor signals with high accuracy. This device is part of the ADS122U04 family and is packaged in a 16-pin TSSOP (PW) package. It features a wide supply range of 2.3 V to 5.5 V, making it versatile for various applications. The ADS122U04IPWR integrates multiple functions, including a programmable gain amplifier (PGA), two differential or four single-ended inputs, internal voltage and temperature references, and programmable excitation current sources. This integration helps reduce system cost and component count in sensor measurement applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 Bits | |
| Data Rate | Up to 2 kSPS (Turbo mode) | SPS |
| Programmable Gain | 1 to 128 | |
| Supply Voltage | 2.3 V to 5.5 V | V |
| Effective Resolution | Up to 20 Bits | |
| Internal Reference Voltage | 2.048 V | V |
| Internal Oscillator Frequency | 1.024 MHz (Normal mode), 2.048 MHz (Turbo mode) | MHz |
| Temperature Range | –40°C to +125°C | °C |
| Package Type | 16-pin TSSOP (PW) | |
| Analog Supply Current (Normal mode, gain = 1 to 16) | 360 to 510 µA | µA |
| Digital Supply Current (Normal mode) | 65 to 100 µA | µA |
Key Features
- Wide supply range: 2.3 V to 5.5 V
- Programmable gain: 1 to 128
- Programmable data rates: Up to 2 kSPS in Turbo mode
- Up to 20 bits effective resolution
- Simultaneous 50-Hz and 60-Hz rejection at 20 SPS with single-cycle settling digital filter
- Two differential or four single-ended inputs through a flexible input multiplexer (MUX)
- Dual-matched programmable current sources: 10 µA to 1.5 mA
- Internal 2.048-V reference with 5 ppm/°C drift
- Internal 2% accurate oscillator
- Internal temperature sensor with 0.5°C accuracy
- Three general-purpose inputs/outputs
- 2-wire UART compatible interface with baud rates up to 120 kBaud and auto-baud-rate detection
Applications
- Sensor transducers and transmitters: Temperature, pressure, strain, flow
- PLC and DCS analog input modules
- Temperature controllers
- Climate chambers, industrial ovens
- Patient monitoring systems: Body temperature, blood pressure
Q & A
- What is the resolution of the ADS122U04IPWR?
The ADS122U04IPWR has a resolution of 24 bits.
- What is the maximum data rate of the ADS122U04IPWR?
The maximum data rate is up to 2 kSPS in Turbo mode.
- What is the range of the programmable gain?
The programmable gain ranges from 1 to 128.
- What is the supply voltage range for the ADS122U04IPWR?
The supply voltage range is 2.3 V to 5.5 V.
- Does the ADS122U04IPWR have an internal temperature sensor?
Yes, it has an internal temperature sensor with 0.5°C accuracy.
- What types of inputs does the ADS122U04IPWR support?
It supports two differential or four single-ended inputs.
- What is the frequency of the internal oscillator?
The internal oscillator frequency is 1.024 MHz in Normal mode and 2.048 MHz in Turbo mode.
- What is the operating temperature range of the ADS122U04IPWR?
The operating temperature range is –40°C to +125°C.
- Does the ADS122U04IPWR have a UART interface?
Yes, it has a 2-wire UART compatible interface with baud rates up to 120 kBaud and auto-baud-rate detection.
- What are some common applications of the ADS122U04IPWR?
Common applications include sensor transducers, PLC and DCS analog input modules, temperature controllers, climate chambers, and patient monitoring systems.
