AD4170BCPZ - 24-Bit Sigma-Delta ADC, 500kSPS | Analog Devices
MPN: AD4170BCPZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
Drop-in alternatives for AD4170BCPZ 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:
AD4170-4BCPZ-RL7
β Drop-Inπ Reference alternative (not in catalog)
AD7172-4BCPZ
β Drop-Inπ Reference alternative (not in catalog)
AD7175-8BCPZ
β Drop-Inπ Reference alternative (not in catalog)
ADS131M04IPBS
β Drop-Inπ Reference alternative (not in catalog)
MCP3564-E/ST
β Drop-Inπ Reference alternative (not in catalog)
AD4170BCPZ Maximum Ratings & Electrical Characteristics
| Resolution | 24 Bit |
| Number of Inputs | 8 |
| Input Configuration | 4 Differential or 8 Single-Ended |
| Output Data Rate | 7.6 SPS to 500 kSPS |
| Input Bandwidth | DC to 50 kHz |
| Sigma-Delta | Yes |
| Package | 32-LFCSP (4x6 mm) |
| Analog Supply Voltage | 2.5 V to 5.5 V |
| Digital Supply Voltage | 1.8 V to 5.5 V |
| Interface | SPI |
| Integrated PGA | Yes, Gain 1 to 128 |
| Integrated Reference | Yes |
| Temperature Sensor | Yes |
| Operating Temperature Range | -40C to +125C |
| Mounting Type | Surface Mount |
AD4170BCPZ Pin Configuration
| Pin 1 | AVDD β Analog power supply |
| Pin 2 | AVSS β Analog ground |
| Pin 3 | REF+ β Positive reference input |
| Pin 4 | REF- β Negative reference input |
| Pin 5 | AIN0 β Analog input 0 |
| Pin 6 | AIN1 β Analog input 1 |
| Pin 7 | AIN2 β Analog input 2 |
| Pin 8 | AIN3 β Analog input 3 |
| Pin 9 | AIN4 β Analog input 4 |
| Pin 10 | AIN5 β Analog input 5 |
| Pin 11 | AIN6 β Analog input 6 |
| Pin 12 | AIN7 β Analog input 7 |
| Pin 13 | DVDD β Digital power supply |
| Pin 14 | DGND β Digital ground |
| Pin 15 | SCLK β Serial clock input |
| Pin 16 | DIN β Serial data input |
| Pin 17 | DOUT β Serial data output |
| Pin 18 | CS β Chip select |
| Pin 19 | SYNC β Synchronization input |
| Pin 20 | RESET β Reset input |
| Pin 21 | GPIO0 β General-purpose I/O |
| Pin 22 | GPIO1 β General-purpose I/O |
| Pin 23 | GPIO2 β General-purpose I/O |
| Pin 24 | GPIO3 β General-purpose I/O |
| Pin 25 | CLKIN β External clock input |
| Pin 26 | CLKOUT β Clock output |
| Pin 27 | VIO β Digital interface supply |
| Pin 28 | VREF β Reference output |
| Pin 29 | VBIAS β Bias voltage output |
| Pin 30 | TEMP β Temperature sensor output |
| Pin 31 | NC β No connect |
| Pin 32 | EP β Exposed pad (thermal) |
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
AD4170BCPZ is suitable for 6 applications: Precision Weigh Scales, Industrial Process Control, Medical Instrumentation, Vibration Analysis, Data Acquisition Systems, Temperature Sensing.
Precision Weigh Scales
The AD4170BCPZ's 24-bit resolution and low noise make it ideal for precision weigh scales. Its integrated PGA allows direct connection to load cells with gains up to 128, eliminating external amplification. The high output data rate supports fast settling times, enabling accurate weight measurements in industrial and retail scales. The device's SPI interface simplifies communication with microcontrollers, and its wide supply voltage range accommodates various system power rails.
Recommended
Industrial Process Control
In industrial process control, the AD4170BCPZ provides high-accuracy analog-to-digital conversion for monitoring temperature, pressure, and flow. Its 8 input channels can be configured as differential or single-ended, allowing connection to multiple sensors. The integrated temperature sensor aids in cold-junction compensation for thermocouples. The device's robust operating temperature range (-40C to +125C) ensures reliable performance in harsh environments, and the SPI interface enables easy integration with PLCs and industrial controllers.
Recommended
Medical Instrumentation
The AD4170BCPZ is suitable for medical instrumentation such as patient monitoring and diagnostic equipment. Its low noise and high resolution enable accurate measurement of biosignals like ECG and EEG. The integrated PGA allows direct connection to electrodes without external amplification, reducing system size and power consumption. The device's high output data rate supports real-time monitoring, and its small LFCSP package is ideal for portable medical devices. Compliance with medical standards requires careful design, but the ADC's performance meets the demands of precision medical measurements.
Recommended
Vibration Analysis
The AD4170BCPZ's 500 kSPS output data rate makes it ideal for vibration analysis in industrial machinery and structural health monitoring. The high speed captures high-frequency vibration signals, while the 24-bit resolution ensures accurate amplitude measurement. The device's low noise floor allows detection of small vibrations, and its multiple input channels can monitor several accelerometers simultaneously. The SPI interface enables high-speed data streaming to a processor for real-time analysis, making it a key component in predictive maintenance systems.
Recommended
Data Acquisition Systems
The AD4170BCPZ is a versatile ADC for general-purpose data acquisition systems. Its 8 input channels, programmable gain, and high output data rate make it suitable for capturing a wide range of analog signals. The integrated reference and temperature sensor reduce external component count, simplifying board design. The device's SPI interface allows easy connection to microcontrollers, FPGAs, or DSPs, enabling flexible system architectures. Whether for laboratory instruments or embedded data loggers, the AD4170BCPZ provides high performance in a compact package.
Recommended
Temperature Sensing
The AD4170BCPZ is well-suited for precision temperature sensing with thermocouples and RTDs. Its integrated PGA provides gains up to 128, allowing direct connection to low-level sensor outputs. The device includes a temperature sensor for cold-junction compensation, simplifying thermocouple measurements. The high resolution and low noise ensure accurate temperature readings over a wide range. The SPI interface enables easy integration with microcontrollers for temperature monitoring and control in industrial, medical, and consumer applications.
Recommended
Recommended Products Summary
Engineering reference data for AD4170BCPZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD4170-4BCPZ-RL7 | AD7172-4BCPZ | AD7175-8BCPZ | ADS131M04IPBS | MCP3564-E/ST |
|---|---|---|---|---|---|---|
| Package | 32-LFCSP (4x6 mm) | 32-LFCSP (4x6 mm) - same | 32-LFCSP (4x6 mm) - same | 32-LFCSP (4x6 mm) - same | 32-LFCSP (4x6 mm) - same | 32-LFCSP (4x6 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Microchip Technology |
| Resolution | 24 Bit | 24 Bit | 24 Bit | 24 Bit | 24 Bit | 24 Bit |
| Max Output Data Rate | 500 kSPS | 500 kSPS | 250 kSPS | 250 kSPS | 128 kSPS | 153.6 kSPS |
| Number of Inputs | 8 | 8 | 4 | 8 | 4 | 4 |
| Integrated PGA | Yes (Gain 1-128) | Yes (Gain 1-128) | Yes (Gain 1-128) | Yes (Gain 1-128) | Yes (Gain 1-128) | Yes (Gain 1-64) |
| Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| Analog Supply Voltage | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.7V to 5.5V | 2.7V to 3.6V |
Key Differentiators
- Higher maximum output data rate (vs AD7172-4BCPZ)
- More input channels (vs ADS131M04IPBS)
- Wider analog supply range (vs MCP3564-E/ST)
Design Notes
Use separate analog and digital supply pins with proper decoupling. Place 10uF and 0.1uF capacitors close to AVDD and DVDD pins. The analog supply should be clean and low-noise; consider using an LDO like the ADP7118 to filter ripple from switching regulators.
For optimal noise performance, use a solid ground plane and separate analog and digital ground areas, connecting them at a single point near the ADC. Keep analog input traces short and shielded from digital signals. Route the SPI lines away from analog inputs to prevent coupling.
Ensure the reference input is properly bypassed with a low-ESR capacitor (e.g., 10uF) to maintain stability. Do not exceed the absolute maximum ratings for supply voltages. When using the integrated PGA, be aware of the input common-mode range to avoid saturation.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
