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Analog Devices Inc. AD7190WBRUZ-RL
- Part No.:
- AD7190WBRUZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7190WBRUZ-RL.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,493
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Product details
Overview
AD7190WBRUZ-RL from Analog Devices is a 24-bit ultralow-noise sigma-delta ADC with integrated PGA, designed for high-precision DC and low-frequency measurement systems. It delivers 8.5 nV RMS noise at 4.7 Hz (gain = 128), supports up to 4.8 kHz output data rate, features 2 differential or 4 pseudo-differential input channels, and operates across –40°C to +105°C - enabling use in automotive weigh scales and industrial PLC analog input modules.
For engineers reviewing the AD7190WBRUZ-RL datasheet, AD7190WBRUZ-RL pinout, AD7190WBRUZ-RL application, or AD7190WBRUZ-RL equivalent, key selection criteria include its 22.5 noise-free bits (gain = 1), simultaneous 50/60 Hz rejection, internal 4.92 MHz clock, Schmitt-triggered SCLK for noise immunity, and automotive-qualified TSSOP-24 packaging with guaranteed drift performance (5 nV/°C offset drift, 1 ppm/°C gain drift).
Technical Context
The AD7190WBRUZ-RL implements a fourth-order sinc4 or third-order sinc3 digital filter with selectable chop mode, directly affecting RMS noise, settling time, and 50/60 Hz rejection capability. Its on-chip PGA offers programmable gain from 1 to 128, enabling direct interface with low-amplitude transducer signals without external amplification.
It integrates a channel sequencer for automatic scanning across up to four pseudo-differential inputs, a temperature sensor (±2°C accuracy post-calibration), bridge power-down switch (10 Ω RON, 30 mA continuous), and four general-purpose digital outputs (P0–P3) referenced to AVDD/AGND - all controlled via SPI/QSPI/MICROWIRE-compatible 3-wire serial interface with DOUT/RDY dual-function pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RMS Noise | 8.5 nV @ 4.7 Hz (gain = 128); enables sub-microvolt signal resolution in low-speed precision weighing |
| Noise-Free Bits | 22.5 @ gain = 1; provides >1 ppm effective resolution for strain gauge or pressure sensor digitization |
| Output Data Rate | 4.7 Hz to 4.8 kHz; supports both ultra-low-noise static measurements and moderate-speed process monitoring |
| Offset Drift | 5 nV/°C; ensures stable zero-point calibration over automotive temperature range (–40°C to +105°C) |
| Gain Drift | 1 ppm/°C; maintains full-scale accuracy without frequent recalibration in industrial environments |
| Common-Mode Rejection | 120 dB @ 50/60 Hz; rejects line-frequency interference in noisy factory or medical settings |
| Power Supply | AVDD: 4.75–5.25 V; DVDD: 2.7–5.25 V; allows flexible dual-supply design with independent analog/digital domains |
Pinout & Package
Housed in a 24-lead TSSOP package (θJA = 128°C/W), the AD7190WBRUZ-RL uses a thermally enhanced layout with separate AGND/DGND pins and dedicated AVDD/DVDD supplies to minimize analog-digital coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1, AIN2 | Differential Input Pair | Supports true differential measurement with common-mode rejection; AIN1 = (+), AIN2 = (–) |
| AIN3, AIN4 | Differential Input Pair | Second independent differential channel; configurable as pseudo-differential with AINCOM reference |
| AINCOM | Pseudo-Differential Reference | Shared analog common for AIN1–AIN4 when operating in 4-channel pseudo-diff mode |
| REFIN1(+), REFIN1(–) | Main Reference Input | Accepts 1 V to AVDD differential reference; supports ratiometric or absolute measurement topologies |
| P0/REFIN2(–), P1/REFIN2(+) | Secondary Reference or GPIO | Configurable via REFSEL bit; dual-use pins reduce BOM count when secondary reference not needed |
| DOUT/RDY | Serial Data Output / Conversion Ready | Active-low RDY indicates conversion completion; doubles as SPI data-out with CS/SCLK synchronization |
| SYNC | Multi-Device Synchronization | Resets digital filters and analog modulators across multiple AD7190WBRUZ-RL units for coherent sampling |
| BPDSW | Bridge Sensor Power-Down Switch | Connects Wheatstone bridge excitation to AGND during idle periods to eliminate thermal drift and self-heating |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 50 Hz/60 Hz rejection | Enables accurate measurements in global AC-powered industrial environments without external notch filtering |
| Zero-latency mode | Guarantees settled conversions for real-time control loops where unfiltered data cannot be tolerated |
| On-chip temperature sensor | Provides ±2°C accuracy (post-calibration) for on-board thermal compensation of sensor front ends |
| Programmable burnout currents | 500 nA per input enables open-wire detection in strain gauge or RTD applications without external circuitry |
| Schmitt-triggered SCLK | Improves noise immunity in long-trace or opto-isolated interfaces, eliminating false clocking in EMI-heavy settings |
Applications
| Automotive Weigh Scales | Industrial Pressure Transmitters |
|---|---|
|
Use Scenario: High-accuracy vehicle axle load monitoring under wide temperature and vibration conditions. IC Role / Device Role / Timing Role: Primary ADC for load cell signals with integrated PGA, 50/60 Hz rejection, and automotive-grade drift stability. Use Value: Eliminates need for external instrumentation amplifier and line-frequency filter; meets AEC-Q100 Grade 2 (–40°C to +105°C) requirements. |
Use Scenario: Digital conversion of piezoresistive pressure sensor outputs in hazardous-area process controllers. IC Role / Device Role / Timing Role: Precision analog front end with bridge power-down switch (BPDSW) and burnout current for fault detection. Use Value: Reduces self-heating error by powering down bridge between conversions; enables predictive maintenance via open-wire diagnostics. |
| PLC Analog Input Modules | Medical Patient Monitoring |
|
Use Scenario: Multi-channel voltage/current acquisition in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Channel sequencer automates scanning across 4 pseudo-differential inputs with consistent timing and gain calibration. Use Value: Simplifies firmware by offloading channel management; maintains <±15 ppm INL across all channels and gains. |
Use Scenario: Low-noise acquisition of biopotential signals (e.g., ECG, impedance plethysmography) in portable diagnostic devices. IC Role / Device Role / Timing Role: Ultra-low-noise ADC with 8.5 nV RMS noise and 22.5 noise-free bits at gain = 1 for microvolt-level signal fidelity. Use Value: Achieves clinical-grade resolution without external chopper-stabilized amplifiers; reduces system power via 6 mA total supply current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7177-2BRUZ | 32-bit resolution, 10 kSPS max, no integrated PGA, higher power (12.5 mA) | Better suited for high-speed precision lab equipment; lacks on-chip burnout current and BPDSW | Select when >24-bit resolution and faster throughput outweigh PGA integration and low-power needs |
| ADS1256IDBT | 24-bit, 30 kSPS, integrated PGA (1–128), no 50/60 Hz rejection, non-automotive grade | Targeted at consumer/test equipment; lacks simultaneous line-frequency rejection and automotive qualification | Choose for cost-sensitive non-automotive designs requiring higher speed but tolerating reduced noise immunity |
Compared with AD7190WBRUZ-RL, AD7177-2BRUZ trades integrated signal conditioning for raw resolution and speed, while ADS1256IDBT offers similar PGA flexibility but omits critical industrial features like synchronized 50/60 Hz rejection and guaranteed drift specs - making AD7190WBRUZ-RL uniquely balanced for automotive and harsh-environment precision sensing.
Availability
AD7190WBRUZ-RL is available at Aetrix Electronics and suitable for automotive weigh scales, industrial pressure transmitters, PLC analog input modules, and medical patient monitoring systems requiring stable component supply with guaranteed long-term availability and automotive qualification.
Supply support for AD7190WBRUZ-RL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.
The AD7190 product line targets high-precision, low-drift measurement systems in automotive, industrial automation, and scientific instrumentation - emphasizing integrated front-end functionality, robust noise rejection, and extended temperature operation.
FAQ
What is the maximum output data rate supported by the AD7190WBRUZ-RL?
The AD7190WBRUZ-RL supports an output data rate range of 4.7 Hz to 4.8 kHz. At the upper limit of 4.8 kHz, RMS noise increases and noise-free bits decrease, but the device maintains full 24-bit no-missing-codes performance. This range allows trade-offs between resolution and speed depending on application requirements such as dynamic weigh scale response or static pressure logging.
Does the AD7190WBRUZ-RL support simultaneous 50 Hz and 60 Hz line-frequency rejection?
Yes, the AD7190WBRUZ-RL supports simultaneous 50 Hz and 60 Hz rejection using its sinc4 digital filter with internal clock and appropriate configuration (e.g., REJ60 bit set at 50 Hz ODR). This feature is confirmed in the datasheet's Normal Mode Rejection table and eliminates need for external hardware filters in globally deployed equipment.
What is the purpose of the BPDSW pin on the AD7190WBRUZ-RL?
The BPDSW (Bridge Power-Down Switch) pin on the AD7190WBRUZ-RL connects the excitation voltage of a Wheatstone bridge sensor to AGND during idle periods. With 10 Ω typical RON and 30 mA continuous rating, it minimizes self-heating and thermal drift in strain gauge or pressure sensor applications - a feature not found in most competing 24-bit ADCs.
Can the AD7190WBRUZ-RL operate with separate analog and digital supplies?
Yes, the AD7190WBRUZ-RL requires independent analog (AVDD: 4.75–5.25 V) and digital (DVDD: 2.7–5.25 V) supplies, each referenced to their own ground (AGND and DGND). This separation reduces digital switching noise coupling into the analog path and is essential for achieving its specified 120 dB common-mode rejection and 8.5 nV RMS noise performance.
Is the AD7190WBRUZ-RL qualified for automotive applications?
Yes, the AD7190WBRUZ-RL is explicitly qualified for automotive applications per the datasheet's "Automotive Products" section and Revision History. It meets AEC-Q100 stress test requirements and is specified over –40°C to +105°C with guaranteed drift performance (5 nV/°C offset drift, 1 ppm/°C gain drift), making it suitable for engine control, chassis sensing, and ADAS subsystems.
AD7190WBRUZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 4.8k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-PGA-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- PGA, Temperature Sensor
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- 24-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- -
AD7190WBRUZ-RL FAQ
1.How can I place an order for AD7190WBRUZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7190WBRUZ-RL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD7190WBRUZ-RL reliable?
The price and inventory of AD7190WBRUZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7190WBRUZ-RL is usually 5 days.
3.What payment methods are accepted for AD7190WBRUZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7190WBRUZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7190WBRUZ-RL?
AD7190WBRUZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7190WBRUZ-RL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD7190WBRUZ-RL?
For technical support, including AD7190WBRUZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7190WBRUZ-RL requirements.
6.How does Aetrix verify that AD7190WBRUZ-RL is sourced from the original manufacturer or authorized distributors?
All AD7190WBRUZ-RL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7190WBRUZ-RL meets industry standards.
7.What is the process for return or replacement of AD7190WBRUZ-RL?
All AD7190WBRUZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with AD7190WBRUZ-RL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD7190WBRUZ-RL part is unused and in its original packaging.
Return procedure for AD7190WBRUZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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