AD7193
PRODUCTION4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
Part Details
- Fast settling filter option
- 4 differential/8 pseudo differential input channels
- RMS noise: 11 nV @ 4.7 Hz (gain = 128)
- 15.5 noise-free bits @ 2.4 kHz (gain = 128)
- Up to 22 noise-free bits (gain = 1)
- Offset drift: ±5 nV/°C
- Gain drift: ±1 ppm/°C
- Specified drift over time
- Automatic channel sequencer
- Programmable gain (1 to 128)
- Output data rate: 4.7 Hz to 4.8 kHz
- Internal or external clock
- Simultaneous 50 Hz/60 Hz rejection
- 4 general-purpose digital outputs
- Power supply
- AVDD: 3 V to 5.25 V
- DVDD: 2.7 V to 5.25 V
- Current: 4.65 mA
- Temperature range: −40°C to +105°C
- 28-lead TSSOP and 32-lead LFCSP packages
- Interface
- 3-wire serial
- SPI, QSPI™, MICROWIRE™, and DSP compatible
- Schmitt trigger on SCLK
The AD7193 is a low noise, complete analog front end for high precision measurement applications. It contains a low noise, 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC). The on-chip low noise gain stage means that signals of small amplitude can interface directly to the ADC.
The device can be configured to have four differential inputs or eight pseudo differential inputs. The on-chip channel sequencer allows several channels to be enabled simultaneously, and the AD7193 sequentially converts on each enabled channel, simplifying communication with the part. The on-chip 4.92 MHz clock can be used as the clock source to the ADC or, alternatively, an external clock or crystal can be used. The output data rate from the part can be varied from 4.7 Hz to 4.8 kHz.
The device has a very flexible digital filter, including a fast settling option. Variables such as output data rate and settling time are dependent on the option selected. The AD7193 also includes a zero latency option.
The part operates with a power supply from 3 V to 5.25 V. It consumes a current of 4.65 mA, and it is available in a 28-lead TSSOP package and a 32-lead LFCSP package.
Applications
- PLC/DCS analog input modules
- Data acquisition
- Strain gage transducers
- Pressure measurement
- Temperature measurement
- Flow measurement
- Weigh scales
- Chromatography
- Medical and scientific instrumentation
Software Resources
Device Drivers 2
FPGA/HDL 3
Mbed Support 1
Evaluation Software 0
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Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Differential Amplifiers 1 | ||
| ADA4940-1 | PRODUCTION | Ultralow Power, Low Distortion ADC Driver |
| Interface Transceivers & Isolators 4 | ||
| ADUM5401 | PRODUCTION | Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (3/1 channel directionality) |
| ADUM5402 | PRODUCTION | Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (2/2 channel directionality) |
| ADUM1411 | PRODUCTION | Quad-Channel Digital Isolator |
| ADUM1412 | PRODUCTION | Quad-Channel Digital Isolator |
| LDO Linear Regulators 1 | ||
| ADP3303 | NOT RECOMMENDED FOR NEW DESIGNS | High Accuracy anyCAP™ 200 mA Low Dropout Linear Regulator |
| Operational Amplifiers (Op Amps) 1 | ||
| AD8628 | PRODUCTION | Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifier |
| Voltage References 3 | ||
| ADR421 | PRODUCTION | Ultraprecision, Low Noise, 2.500 V XFET® Voltage References |
| ADR431 | PRODUCTION | Ultralow Noise XFET® Voltage References with Current Sink and Source Capability |
| ADR425 | PRODUCTION | Ultraprecision, Low Noise, 5.00 V XFET® Voltage Reference |
| Parts | Product Life Cycle | Description |
|---|---|---|
| AD7173-8 | RECOMMENDED FOR NEW DESIGNS |
Low Power, 8-/16-Channel, 31.25 kSPS, 24-Bit, Highly Integrated Sigma-Delta ADC |
| AD7172-4 | RECOMMENDED FOR NEW DESIGNS | Low Power, with 4- or 8-channel, 24-bit, 31.25 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers |
| AD7175-8 | RECOMMENDED FOR NEW DESIGNS | 24-Bit, 8-/16-Channel, 250 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers |
Tools & Simulations
Virtual Eval - BETA
Virtual Eval is a web application to assist designers in product evaluation of ADCs, DACs, and other ADI products. Using detailed models on Analog’s servers, Virtual Eval simulates crucial part performance characteristics within seconds. Configure operating conditions such as input tones and external jitter, as well as device features like gain or digital down-conversion. Performance characteristics include noise, distortion, and resolution, FFTs, timing diagrams, response plots, and more.
Open ToolDesign Tool 2
Evaluation Kits
AD7193 Evaluation Board
Resources
OBSOLETE: AD7193 Evaluation Board
Resources
Reference Designs
Fully Programmable Universal Analog Front End for Process Control Applications
Part Used
Design & Integration Tools
Isolated 4-Channel, Thermocouple/RTD Temperature Measurement System with 0.5°C Accuracy