AD7176-2BRUZ - 24-Bit 250kSPS Sigma-Delta ADC | Analog Devices
MPN: AD7176-2BRUZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $13.43 | $13.43 |
| 10 | $12.5 | $125.00 |
| 100 | $11.2 | $1,120.00 |
| 500 | $10.1 | $5,050.00 |
| 1,000 | $9.5 | $9,500.00 |
Drop-in alternatives for AD7176-2BRUZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AD7175-2BRUZ
β Drop-Inπ Reference alternative (not in catalog)
AD7177-2BRUZ
β Drop-Inπ Reference alternative (not in catalog)
ADS127L01
β Drop-Inπ Reference alternative (not in catalog)
AD7176-2BRUZ-RL
β Drop-Inπ Reference alternative (not in catalog)
AD7176-2BRUZ Maximum Ratings & Electrical Characteristics
| Resolution | 24 bit |
| Sampling Rate | 250 kSPS |
| Number of Input Channels | 2 differential or 4 pseudo-differential |
| Input Type | Differential, Pseudo-Differential |
| Data Interface | SPI, QSPI |
| Architecture | Sigma-Delta |
| Reference Type | Internal, External |
| Internal Reference Voltage | 2.5 V |
| Reference Drift | 2 ppm/Β°C |
| Settling Time | 20 Β΅s |
| INL (Integral Nonlinearity) | Β±2 ppm of FSR typical |
| Supply Voltage - Analog | 2.5 V to 5.5 V |
| Supply Voltage - Digital | 2.3 V to 5.5 V |
| Operating Temperature Range | -40Β°C to +105Β°C |
| Package | 24-TSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD7176-2BRUZ Pin Configuration
| Pin 1 | AVDD β Analog power supply |
| Pin 2 | AIN0 β Analog input 0 |
| Pin 3 | AIN1 β Analog input 1 |
| Pin 4 | AIN2 β Analog input 2 |
| Pin 5 | AIN3 β Analog input 3 |
| Pin 6 | REF+ β Positive reference input |
| Pin 7 | REF- β Negative reference input |
| Pin 8 | GND β Ground |
| Pin 9 | DVDD β Digital power supply |
| Pin 10 | SCLK β Serial clock input |
| Pin 11 | DIN β Serial data input |
| Pin 12 | DOUT β Serial data output |
| Pin 13 | CS β Chip select |
| Pin 14 | SYNC β Synchronization input |
| Pin 15 | GPIO β General purpose I/O |
| Pin 16 | XIN β Crystal oscillator input |
| Pin 17 | XOUT β Crystal oscillator output |
| Pin 18 | AVDD β Analog power supply |
| Pin 19 | AIN4 β Analog input 4 (if used) |
| Pin 20 | AIN5 β Analog input 5 (if used) |
| Pin 21 | AIN6 β Analog input 6 (if used) |
| Pin 22 | AIN7 β Analog input 7 (if used) |
| Pin 23 | GND β Ground |
| Pin 24 | AVDD β Analog power supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD7176-2BRUZ is suitable for 6 applications: Process Control, Weigh Scales, Medical Instrumentation, Data Acquisition Systems, Industrial Automation, Test and Measurement.
Process Control
The AD7176-2BRUZ is ideal for process control applications such as temperature, pressure, and flow measurement. Its 24-bit resolution and 250 kSPS sampling rate enable accurate, real-time monitoring of multiple sensors. The crosspoint multiplexer allows direct connection of up to 4 pseudo-differential inputs, reducing external muxing. The fast 20 Β΅s settling time ensures quick channel-to-channel switching, while the internal 2.5 V reference with 2 ppm/Β°C drift provides stable measurements over temperature. The device's 50 Hz/60 Hz rejection mode helps suppress power-line noise, common in industrial environments. With a wide supply range and SPI interface, it integrates easily into PLC and DCS systems.
Recommended
Weigh Scales
The AD7176-2BRUZ is well-suited for weigh scale applications due to its high resolution and low noise. With 24-bit resolution and a noise-free count of up to 24 bits at lower data rates, it can resolve small weight changes accurately. The device's fast settling time allows for quick measurements, essential for dynamic weighing. The internal reference simplifies design, and the burnout current source can detect sensor faults. The SPI interface enables easy connection to microcontrollers. For best performance, use a precision external reference like the ADR441 and ensure proper PCB layout with separate analog and digital grounds.
Recommended
Medical Instrumentation
In medical instrumentation, the AD7176-2BRUZ provides high-accuracy data acquisition for patient monitoring and diagnostic equipment. Its 24-bit resolution and low noise are critical for measuring small biological signals. The device's low power consumption and small TSSOP package make it suitable for portable devices. The crosspoint multiplexer allows monitoring of multiple channels, such as ECG and temperature, with a single ADC. The internal reference reduces component count, and the SPI interface simplifies integration. The device's wide operating temperature range (-40Β°C to +105Β°C) ensures reliability in clinical environments.
Recommended
Data Acquisition Systems
The AD7176-2BRUZ is a key component in high-speed data acquisition systems, offering 24-bit resolution at 250 kSPS. Its fast settling time of 20 Β΅s enables multiplexed measurements of multiple channels without sacrificing throughput. The device's flexible input mux supports 2 differential or 4 pseudo-differential inputs, ideal for multi-sensor systems. The SPI interface allows easy connection to FPGAs or microcontrollers. The internal reference and temperature sensor add functionality, while the 50 Hz/60 Hz rejection mode helps in noisy environments. For optimal performance, use a clean analog supply and proper decoupling.
Recommended
Industrial Automation
The AD7176-2BRUZ is designed for industrial automation applications such as motor control and factory automation. Its high resolution and fast sampling rate enable precise monitoring of current, voltage, and temperature. The crosspoint multiplexer allows multiple sensors to be connected directly, reducing system complexity. The device's robust design includes a wide supply range and SPI interface, making it easy to integrate into PLCs and industrial controllers. The 50 Hz/60 Hz rejection mode helps filter power-line noise, and the burnout current source aids in sensor fault detection. The device operates reliably over -40Β°C to +105Β°C, suitable for harsh industrial environments.
Recommended
Test and Measurement
The AD7176-2BRUZ is ideal for test and measurement equipment, offering high resolution and speed for accurate signal analysis. Its 24-bit resolution and 250 kSPS sampling rate allow precise digitization of waveforms. The fast settling time enables quick measurements in automated test systems. The device's flexible input configuration supports various sensor types, and the SPI interface simplifies integration with data acquisition software. The internal reference and temperature sensor add versatility. For high-accuracy applications, an external reference like the ADR441 can be used. The device's low noise and high linearity ensure reliable measurements.
Recommended
Recommended Products Summary
Engineering reference data for AD7176-2BRUZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7175-2BRUZ | AD7177-2BRUZ | ADS127L01 |
|---|---|---|---|---|
| Package | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 24 bit | 24 bit | 32 bit | 24 bit |
| Max Sampling Rate | 250 kSPS | 250 kSPS | 10 kSPS | 400 kSPS |
| Settling Time | 20 Β΅s | 20 Β΅s | 20 Β΅s | [DATA_NEEDED] |
| Input Channels | 2 differential or 4 pseudo-differential | 1 differential or 2 pseudo-differential | 1 differential or 2 pseudo-differential | 1 differential |
| Internal Reference | 2.5 V, 2 ppm/Β°C | 2.5 V, 2 ppm/Β°C | 2.5 V, 2 ppm/Β°C | No internal reference |
| INL | Β±2 ppm of FSR | Β±2 ppm of FSR | Β±2 ppm of FSR | [DATA_NEEDED] |
Key Differentiators
- Crosspoint multiplexer for flexible input routing (vs AD7175-2BRUZ)
- Higher resolution than AD7177-2 at high speed (vs AD7177-2BRUZ)
- Integrated 2.5 V reference with 2 ppm/Β°C drift (vs ADS127L01)
Design Notes
Decouple the AVDD and DVDD pins with 10 Β΅F and 0.1 Β΅F capacitors placed as close to the pins as possible. Use separate analog and digital ground planes, and connect them at a single point near the ADC. A clean, low-noise analog supply is critical for achieving the specified 24-bit performance; consider using an LDO like the ADP7104 to filter supply noise.
Keep analog input traces short and shielded from digital signals. Route the SPI lines (SCLK, DIN, DOUT, CS) away from the analog inputs to minimize coupling. Use a solid ground plane under the ADC and avoid routing digital traces over the analog input area. For best performance, use a 4-layer PCB with dedicated power and ground planes.
Do not exceed the absolute maximum ratings for AVDD and DVDD. Ensure the reference input is properly bypassed with a 10 Β΅F capacitor if using the internal reference. When using an external reference, ensure it is stable and low-noise. Also, be aware that the crosspoint multiplexer has a finite settling time; allow sufficient time for the input to settle before starting a conversion.
Compliance Information
RoHS compliant per distributor listings. No AEC-Q100 qualification indicated for this part.