AD7190
PRODUCTION4.8 kHz Ultralow Noise 24-Bit Sigma-Delta ADC with PGA
- Part Models
- 3
- 1ku List Price
- Starting From $7.48
Part Details
- RMS noise: 8.5 nV @ 4.7 Hz (gain = 128)
- 16 noise free bits @ 2.4 kHz (gain = 128)
- Up to 22.5 noise free bits (gain = 1)
- Offset drift: 5 nV/°C
- Gain drift: 1 ppm/°C
- Specified drift over time
- 2 differential/4 pseudo differential input channels
- Qualified for automotive applications
- See Data Sheet for Additional Information
The AD7190 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 be interfaced directly to the ADC.
The device can be configured to have two differential inputs or four pseudo differential inputs. The on-chip channel sequencer allows several channels to be enabled, and the AD7190 sequentially converts on each enabled channel. This simplifies 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 two digital filter options. The choice of filter affects the rms noise/noise-free resolution at the programmed output data rate, the settling time, and the 50 Hz/60 Hz rejection. For applications that require all conversions to be settled, the AD7190 includes a zero latency feature.
The part operates with 5 V analog power supply and a digital power supply from 2.7 V to 5.25 V. It consumes a current of 6 mA. It is housed in a 24-lead TSSOP package.
APPLICATIONS
- Weigh scales
- Strain gauge transducers
- Pressure measurement
- Temperature measurement
- Chromatography
- PLC/DCS analog input modules
- Data acquisition
- Medical and scientific instrumentation
Documentation
Data Sheet 1
Application Note 4
Technical Articles 1
Frequently Asked Question 1
Video 3
Circuit Note 1
Tutorial 1
Device Drivers 2
Analog Dialogue 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD7190BRUZ | 24-Lead TSSOP | ||
| AD7190BRUZ-REEL | 24-Lead TSSOP | ||
| AD7190WBRUZ | 24-Lead TSSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 20, 2024 - 23_0143 Qualification of an Alternate Wafer Fab Site for 0.5um TSMC CMOS Process |
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| AD7190BRUZ | PRODUCTION | |
| AD7190BRUZ-REEL | PRODUCTION | |
|
Aug 10, 2021 - 21_0035 Amkor Philippines as an Alternate Site for TSSOP_4.4 |
||
| AD7190BRUZ | PRODUCTION | |
| AD7190BRUZ-REEL | PRODUCTION | |
|
Jan 20, 2012 - 11_0218 Halogen Free Material Change for Certain TSSOP Products at Carsem |
||
| AD7190BRUZ | PRODUCTION | |
| AD7190BRUZ-REEL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 2
Mbed Support 1
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| isoPower 1 | ||
| ADUM3470 | PRODUCTION | Isolated Switching Regulators (4/0 Channel Directionality) |
| Low Input Bias Current Op Amps (≤100 pA) 2 | ||
| AD8639 | PRODUCTION | 16V Dual Auto-Zero, Rail-to-Rail Output, Precision Amplifier |
| ADA4051-2 | PRODUCTION | 1.8V, µPower, Zero-Drift, RRIO Dual Amplifier |
| Positive Linear Regulators (LDO) 1 | ||
| ADP3303 | NOT RECOMMENDED FOR NEW DESIGNS | High Accuracy anyCAP™ 200 mA Low Dropout Linear Regulator |
| Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C) 1 | ||
| AD8539 | PRODUCTION | Low Power, Precision, Auto-Zero Op Amp |
| Series Voltage References 2 | ||
| ADR421 | PRODUCTION | Ultraprecision, Low Noise, 2.500 V XFET® Voltage References |
| ADR431 | PRODUCTION | Ultralow Noise XFET® Voltage References with Current Sink and Source Capability |
| Parts | Product Life Cycle | Description |
|---|---|---|
| AD7172-2 | RECOMMENDED FOR NEW DESIGNS | Low Power, 24-Bit, 31.25 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers |
| AD7175-2 | RECOMMENDED FOR NEW DESIGNS | 24-Bit, 250 kSPS, Sigma-Delta ADC with 20 µs Settling and True Rail-to-Rail Buffers |
| AD7177-2 | RECOMMENDED FOR NEW DESIGNS | 32-Bit, 10 kSPS, Sigma-Delta ADC with 100 µs Settling and 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
OBSOLETE: AD7190 Evaluation Board
Resources
AD7190 Evaluation Board
Resources
Reference Designs
Precision Weigh Scale Design Using the AD7190 24-Bit Sigma-Delta ADC with Internal PGA