AD7175-8BCPZ-RL7 - 24-Bit Sigma-Delta ADC | Analog Devices
MPN: AD7175-8BCPZ-RL7 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $13.86 | $13.86 |
| 10 | $12.47 | $124.70 |
| 100 | $11.08 | $1,108.00 |
| 500 | $9.69 | $4,845.00 |
| 1,000 | $8.31 | $8,310.00 |
Drop-in alternatives for AD7175-8BCPZ-RL7 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:
AD7175-8BCPZ
β Drop-Inπ Reference alternative (not in catalog)
AD7172-8BCPZ
β Drop-Inπ Reference alternative (not in catalog)
AD7176-8BCPZ
β Drop-Inπ Reference alternative (not in catalog)
AD7175-8BCPZ-RL7 Maximum Ratings & Electrical Characteristics
| Resolution | 24 Bit |
| Number of Channels | 8, 16 Input |
| Input Type | Single-Ended, Differential |
| Data Interface | SPI |
| Sampling Rate | 250 kSPS |
| Architecture | Sigma-Delta |
| Reference Type | External |
| Voltage - Supply, Analog | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.3V ~ 5.5V |
| Operating Temperature | -40Β°C ~ +105Β°C |
| Package / Case | 40-LFCSP-WQ (6x6) |
| Supplier Device Package | 40-LFCSP-WQ |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Level | 3 (168 Hours) |
AD7175-8BCPZ-RL7 Pin Configuration
| Pin 1 | AVDD β Analog power supply |
| Pin 2 | AVSS β Analog ground |
| Pin 3 | AIN0 β Analog input 0 |
| Pin 4 | AIN1 β Analog input 1 |
| Pin 5 | AIN2 β Analog input 2 |
| Pin 6 | AIN3 β Analog input 3 |
| Pin 7 | AIN4 β Analog input 4 |
| Pin 8 | AIN5 β Analog input 5 |
| Pin 9 | AIN6 β Analog input 6 |
| Pin 10 | AIN7 β Analog input 7 |
| Pin 11 | AIN8 β Analog input 8 |
| Pin 12 | AIN9 β Analog input 9 |
| Pin 13 | AIN10 β Analog input 10 |
| Pin 14 | AIN11 β Analog input 11 |
| Pin 15 | AIN12 β Analog input 12 |
| Pin 16 | AIN13 β Analog input 13 |
| Pin 17 | AIN14 β Analog input 14 |
| Pin 18 | AIN15 β Analog input 15 |
| Pin 19 | REF+ β Positive reference input |
| Pin 20 | REF- β Negative reference input |
| Pin 21 | DVDD β Digital power supply |
| Pin 22 | DVSS β Digital ground |
| Pin 23 | SCLK β Serial clock input |
| Pin 24 | DIN β Serial data input |
| Pin 25 | DOUT β Serial data output |
| Pin 26 | CS β Chip select |
| Pin 27 | SYNC β Synchronization input |
| Pin 28 | RESET β Reset input |
| Pin 29 | GPIO0 β General purpose I/O 0 |
| Pin 30 | GPIO1 β General purpose I/O 1 |
| Pin 31 | GPIO2 β General purpose I/O 2 |
| Pin 32 | GPIO3 β General purpose I/O 3 |
| Pin 33 | CLKIN β External clock input |
| Pin 34 | CLKOUT β Clock output |
| Pin 35 | AVDD β Analog power supply |
| Pin 36 | AVSS β Analog ground |
| Pin 37 | EP β Exposed pad (thermal) |
| Pin 38 | NC β No connect |
| Pin 39 | NC β No connect |
| Pin 40 | NC β No connect |
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
AD7175-8BCPZ-RL7 is suitable for 6 applications: Process Control, Industrial Automation, Temperature Measurement, Weigh Scales, Medical Instrumentation, Energy Monitoring.
Process Control
The AD7175-8 is ideal for process control systems that require high-resolution, low-noise measurement of analog signals. With 24-bit resolution and 250 kSPS sampling, it can accurately digitize signals from sensors such as pressure transmitters and flow meters. The multiplexed inputs allow monitoring multiple channels, and the integrated buffers simplify interfacing with high-impedance sensors. The device's fast settling time enables rapid scanning of multiple channels, making it suitable for real-time control loops. Its industrial temperature range and robust design ensure reliable operation in harsh environments.
Recommended
Industrial Automation
In industrial automation, the AD7175-8 provides precise analog-to-digital conversion for monitoring and control applications. Its 8 differential or 16 single-ended inputs can handle multiple sensor signals, such as temperature, pressure, and position. The high resolution and low noise ensure accurate measurement, while the SPI interface allows easy integration with microcontrollers and PLCs. The device's fast settling time supports high-speed data acquisition, enabling responsive control systems. The wide operating temperature range and RoHS compliance make it suitable for industrial environments.
Recommended
Temperature Measurement
The AD7175-8 is well-suited for temperature measurement applications, such as thermocouple and RTD sensing. Its 24-bit resolution provides high accuracy, and the low noise performance ensures precise temperature readings. The multiplexed inputs allow connection of multiple temperature sensors, and the integrated buffers handle the high impedance of thermocouples. The device's programmable digital filter can be configured to reject 50/60 Hz noise, improving measurement stability. The SPI interface simplifies data transfer to a host processor for temperature monitoring and control.
Recommended
Weigh Scales
The AD7175-8 is an excellent choice for weigh scale applications, where high resolution and low noise are critical for accurate weight measurement. Its 24-bit sigma-delta architecture provides the precision needed for load cell interfaces. The device's fast settling time allows quick measurements, and the multiplexed inputs can support multiple load cells. The integrated buffers simplify connection to bridge sensors, and the SPI interface enables easy communication with a microcontroller. The device's low power consumption is beneficial for battery-powered scales.
Recommended
Medical Instrumentation
In medical instrumentation, the AD7175-8 provides high-precision analog-to-digital conversion for applications such as patient monitoring and diagnostic equipment. Its 24-bit resolution and low noise ensure accurate measurement of physiological signals. The multiplexed inputs allow monitoring of multiple channels, and the device's small package size is suitable for compact medical devices. The SPI interface enables integration with digital signal processors. The device's industrial temperature range and RoHS compliance meet medical equipment standards.
Recommended
Energy Monitoring
The AD7175-8 is used in energy monitoring systems to measure voltage and current with high accuracy. Its 24-bit resolution and low noise enable precise measurement of power consumption. The multiplexed inputs can handle multiple phases, and the device's fast settling time supports real-time monitoring. The SPI interface allows easy data transfer to a metering IC or microcontroller. The device's wide input range and industrial temperature range make it suitable for smart grid applications.
Recommended
Recommended Products Summary
Engineering reference data for AD7175-8BCPZ-RL7 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7175-8BCPZ | AD7172-8BCPZ | AD7176-8BCPZ | ADS1278IPM | LTC2449CG |
|---|---|---|---|---|---|---|
| Package | 40-LFCSP-WQ (6x6) | 40-LFCSP-WQ (6x6) | 40-LFCSP-WQ (6x6) | 40-LFCSP-WQ (6x6) | 64-TQFP | 38-SSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Resolution | 24 Bit | 24 Bit | 16 Bit | 24 Bit | 24 Bit | 24 Bit |
| Max Sampling Rate | 250 kSPS | 250 kSPS | 31.25 kSPS | 250 kSPS | 128 kSPS | 833 SPS |
| Number of Channels | 8 Differential / 16 Single-Ended | 8 Differential / 16 Single-Ended | 8 Differential / 16 Single-Ended | 8 Differential / 16 Single-Ended | 8 Differential | 8 Differential |
| Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| Analog Supply Voltage | 2.5V ~ 5.5V | 2.5V ~ 5.5V | 2.5V ~ 5.5V | 2.5V ~ 5.5V | 5V | 5V |
| Operating Temperature | -40Β°C ~ +105Β°C | -40Β°C ~ +105Β°C | -40Β°C ~ +105Β°C | -40Β°C ~ +105Β°C | -40Β°C ~ +105Β°C | -40Β°C ~ +85Β°C |
Key Differentiators
- Higher resolution and speed than AD7172-8 (vs AD7172-8BCPZ)
- Pin-compatible with AD7176-8 (vs AD7176-8BCPZ)
- Integrated input buffers (vs ADS1278IPM)
Design Notes
Provide clean power supplies to AVDD and DVDD. Use low-dropout regulators (LDOs) with low noise, such as the ADP2441, to minimize power supply noise that can affect ADC performance. Decouple each supply pin with 10uF and 0.1uF capacitors placed close to the pins. A ferrite bead in series with the supply can further reduce high-frequency noise.
Use a solid ground plane for the analog and digital sections, and split them only if necessary. Place the ADC close to the sensors to minimize trace lengths. Route analog inputs away from digital signals to avoid coupling. Use guard rings around analog inputs if needed. Ensure the exposed pad is soldered to the ground plane for thermal and electrical performance.
Avoid driving the reference inputs with high-impedance sources; use a buffer or low-impedance reference. Ensure the SPI lines are not too long and are properly terminated to prevent ringing. Do not exceed the absolute maximum ratings on any pin. For best noise performance, use a low-noise external reference and keep the analog input signals within the specified common-mode range.
Compliance Information
ROHS3 Compliant and REACH Unaffected per PartGenie. Not AEC-Q100 qualified.
