AD7177-2BRUZ - 32-Bit Sigma-Delta ADC | Analog Devices
MPN: AD7177-2BRUZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $65.4545 | $65.45 |
| 10 | $47.2727 | $472.73 |
| 100 | $41.8182 | $4,181.82 |
| 500 | $40 | $20,000.00 |
| 1,000 | $38.1818 | $38,181.80 |
Drop-in alternatives for AD7177-2BRUZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7176-2BRUZ
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$9.5 / Unit
View Datasheet →AD7175-2BRUZ-RL7
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$13 / Unit
View Datasheet →AD7172-2BRUZ-RL7
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$10.6591 / Unit
View Datasheet →AD7175-8BCPZ-RL7
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$19.5682 / Unit
View Datasheet →AD7177-2BRUZ-RL7
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$38.1818 / Unit
View Datasheet →AD7177-2BRUZ Maximum Ratings & Electrical Characteristics
| Resolution | 32 Bit |
| Number of Channels | 2, 4 Input |
| Sampling Rate | 10 kSPS |
| Input Type | Differential, Single-Ended |
| Interface | SPI |
| Architecture | Sigma-Delta |
| Reference Type | External, Internal |
| Supply Voltage - Analog | 2.5 V to 5.5 V |
| Supply Voltage - Digital | 2.5 V to 5.5 V |
| Settling Time | 100 µs |
| Package | 24-TSSOP |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C to +105°C |
| RoHS Status | Compliant |
| Number of Bits | 32 |
AD7177-2BRUZ Pin Configuration
| Pin 1 | AVDD — Analog power supply |
| Pin 2 | AIN0 — Analog input 0 |
| Pin 3 | AIN1 — Analog input 1 |
| Pin 4 | AIN2 — Analog input 2 |
| Pin 5 | AIN3 — Analog input 3 |
| Pin 6 | REF+ — Positive reference input |
| Pin 7 | REF- — Negative reference input |
| Pin 8 | GND — Ground |
| Pin 9 | DVDD — Digital power supply |
| Pin 10 | SCLK — Serial clock input |
| Pin 11 | DIN — Serial data input |
| Pin 12 | DOUT — Serial data output |
| Pin 13 | CS — Chip select |
| Pin 14 | SYNC — Synchronization input |
| Pin 15 | RESET — Reset input |
| Pin 16 | GPIO0 — General purpose I/O |
| Pin 17 | GPIO1 — General purpose I/O |
| Pin 18 | GPIO2 — General purpose I/O |
| Pin 19 | GPIO3 — General purpose I/O |
| Pin 20 | AVDD — Analog power supply |
| Pin 21 | AIN4 — Analog input 4 |
| Pin 22 | AIN5 — Analog input 5 |
| Pin 23 | AIN6 — Analog input 6 |
| Pin 24 | AIN7 — Analog input 7 |
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
AD7177-2BRUZ is suitable for 6 applications: Process Control, Weigh Scales, Temperature Measurement, Medical Instrumentation, Data Acquisition Systems, Industrial Automation.
Process Control
The AD7177-2BRUZ is ideal for process control systems requiring high-resolution measurement of analog signals. Its 32-bit resolution and 10 kSPS sampling rate enable accurate monitoring of temperature, pressure, and flow. The true rail-to-rail input buffers allow direct connection to sensors without additional conditioning, simplifying design. The fast 100 µs settling time supports multiplexing multiple channels, increasing system throughput. The device's low noise and low drift internal reference ensure stable measurements over time, critical for industrial environments.
Recommended
Weigh Scales
The AD7177-2BRUZ is well-suited for weigh scale applications due to its high resolution and low noise. The 32-bit resolution allows precise measurement of small weight changes, essential for laboratory and industrial scales. The device's internal reference and buffers reduce external component count, simplifying the design. The SPI interface enables easy integration with microcontrollers for digital processing. The low drift ensures long-term accuracy, making it reliable for continuous operation.
Recommended
Temperature Measurement
The AD7177-2BRUZ is excellent for temperature measurement using thermocouples, RTDs, and thermistors. Its high resolution and low noise enable accurate temperature readings with high precision. The device's per-channel configuration allows different gains and filters for each input, optimizing performance for various sensor types. The internal reference provides a stable voltage for ratiometric measurements. The 100 µs settling time allows fast scanning of multiple temperature sensors, making it suitable for multi-zone monitoring systems.
Recommended
Medical Instrumentation
The AD7177-2BRUZ is used in medical instrumentation such as patient monitors and diagnostic equipment. Its high resolution and low noise are critical for accurate measurement of physiological signals like ECG and EEG. The device's small TSSOP package is suitable for compact medical devices. The SPI interface allows easy integration with digital signal processors for real-time analysis. The low power consumption is beneficial for battery-powered portable medical devices.
Recommended
Data Acquisition Systems
The AD7177-2BRUZ is a key component in data acquisition systems (DAQ) for test and measurement. Its 32-bit resolution and 10 kSPS sampling rate provide high accuracy for capturing analog signals. The device's multiple input channels and per-channel configuration allow flexible signal conditioning. The fast settling time enables high-throughput multiplexing, making it suitable for scanning many sensors. The SPI interface simplifies connection to DAQ controllers, and the internal reference reduces external components.
Recommended
Industrial Automation
The AD7177-2BRUZ is used in industrial automation for precise monitoring and control of manufacturing processes. Its high resolution and low noise ensure accurate measurement of analog signals from sensors and transducers. The device's robust design operates over a wide temperature range, suitable for harsh industrial environments. The SPI interface allows integration with PLCs and industrial controllers. The per-channel configuration enables adaptation to different signal types, enhancing system flexibility.
Recommended
Recommended Products Summary
Engineering reference data for AD7177-2BRUZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7176-2BRUZ | AD7175-2BRUZ-RL7 | AD7172-2BRUZ-RL7 |
|---|---|---|---|---|
| Resolution | 32 Bit | 24 Bit | 24 Bit | 24 Bit |
| Sampling Rate | 10 kSPS | 250 kSPS | 250 kSPS | 31.25 kSPS |
| Number of Channels | 2, 4 Input | 2, 4 Input | 2, 4 Input | 2, 4 Input |
| Settling Time | 100 µs | 1 µs | 1 µs | 4 µs |
| Package | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Interface | SPI | SPI | SPI | SPI |
Key Differentiators
- 32-bit resolution (vs AD7176-2BRUZ)
- 100 µs settling time (vs AD7172-2BRUZ-RL7)
- True rail-to-rail input buffers (vs AD7175-2BRUZ-RL7)
Design Notes
Decouple the AVDD and DVDD pins with 10 µF and 0.1 µF capacitors placed as close to the pins as possible. Use separate analog and digital ground planes to minimize noise coupling. The AD7177-2 operates from 2.5 V to 5.5 V, so ensure the supply is clean and stable for optimal performance.
For best performance, use a low-impedance ground plane and avoid routing digital signals under the analog input pins. Keep the reference inputs (REF+ and REF-) away from noisy digital traces. Use a star-ground topology to prevent ground loops. The TSSOP package has a thermal pad that should be soldered to the ground plane for heat dissipation.
Ensure the reference voltage is stable and low-noise, as it directly affects measurement accuracy. The AD7177-2 has an internal reference, but for best performance, use an external precision reference. Also, avoid exceeding the absolute maximum ratings on the analog inputs. The SPI interface should be operated at appropriate speeds to avoid data corruption.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
