AD7170
NOT RECOMMENDED FOR NEW DESIGNS12-Bit Low Power Σ−Δ ADC
- Part Models
- 2
- 1ku List Price
- Starting From $1.26
Part Details
- Output data rate: 125 Hz
- Pin-programmable power-down and reset
- Status function
- Internal clock oscillator
- Current: 135 μA
- Power supply: 2.7 V to 5.25 V
- –40°C to +105°C temperature range
- Package: 10-lead 3 mm x 3 mm LFCSP
The AD7170 is a very low power 12-bit analog-to-digital converter (ADC). It contains a precision 12-bit sigma-delta (Σ-Δ) ADC and an on-chip oscillator. Consuming only 135 μA, the AD7170 is particularly suitable for portable or battery operated products where very low power is a requirement. The AD7170 also has a power-down mode in which the device consumes 5 μA, thus increasing the battery life of the product.
For ease-of-use, all the features of the AD7170 are controlled by dedicated pins. Each time a data read occurs, eight status bits are appended to the 12-bit conversion. These status bits contain a pattern sequence that can be used to confirm the validity of the serial transfer. The output data rate of the AD7170 is 125 Hz, whereas the settling time is 24 ms. The AD7170 has one differential input and a gain of 1. This is useful in applications where the user needs to use an external amplifier to implement system-specific filtering or gain requirements.
The AD7170 operates with a power supply from 2.7 V to 5.25 V. It is available in a 10-lead LFCSP package.
The AD7171 is a 16-bit version of the AD7170. It has the same feature set as the AD7170 and is pin-for-pin compatible.
INTERFACE
- 2-wire serial (read-only device)
- SPI compatible
- Schmitt trigger on SCLK
APPLICATIONS
- Pressure measurement
- Industrial process control
- Portable instrumentation
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
Video 1
Circuit Note 1
Device Drivers 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD7170BCPZ-500RL7 | 10-Lead LFCSP (3mm x 3mm) | ||
| AD7170BCPZ-REEL7 | 10-Lead LFCSP (3mm x 3mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
FPGA/HDL 2
Device Drivers 1
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Low Input Bias Current Op Amps (≤100 pA) 1 | ||
| AD8628 | PRODUCTION | Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifier |
| Low Power Op Amps (≤ 1mA/amp) 1 | ||
| AD8631 | Obsolete | 1.8 V, 5 MHz Rail-to-Rail Low Power Operational Amplifiers |
| Series Voltage References 3 | ||
| ADR395 | PRODUCTION | 5.0 V Micropower, Low Noise Precision Voltage Reference with Shutdown |
| ADR381 | PRODUCTION | 2.048 V and 2.5 V Bandgap Voltage References |
| ADR391 | PRODUCTION | 2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown |
| Single-Ended to Differential Amplifiers 1 | ||
| ADA4941-1 | PRODUCTION | Single-Supply, Differential 18-Bit ADC Driver |
| Standard Digital Isolators 2 | ||
| ADUM1201 | PRODUCTION | Dual-Channel Digital Isolator (1/1 Channel Directionality) |
| ADUM1301 | PRODUCTION | Triple-Channel Digital Isolator |
Evaluation Kits
AD7170 Evaluation Board
Resources
Software
Reference Designs
Bidirectional Isolated High-Side Current Sense with 270 V Common-Mode Rejection