AD7708BRUZ-REEL7
Analog to Digital Converters (ADC)
Technical Specifications
| Type | Description |
|---|---|
| Maximum Clock Speed | 32 kHz |
| Quiescent Current (Iq) | 30uA |
| Integral non - linearity | - |
| Voltage Reference | External |
| Clock/Oscillator | Built-in |
| Resolution(Bits) | 19.79Hz;16 |
| S/N Ratio | - |
| DNL (LSB) | - |
| Type | Description |
|---|---|
| ADC architecture | Sigma-Delta |
| Programmable Gain | Support |
| Operating Temp | -40°C ~ +85°C |
| Interface | SPI |
| Working Voltage V | 4 V |
| Channels | 8.0 |
| Features | Bipolar input;Multiplexers;Integrated modulator;Built-in digital filter;Auto calibration;Input buffer;Power-on reset |
| Package / Case | TSSOP-28 |
Product Introduction
The AD7708/AD7718 are complete analog front-ends for low frequency measurement applications. The AD7718 contains a 24-bit Σ-∆ ADC with PGA and can be configured as 4/5 fully-differential input channels or 8/10 pseudo-differential input channels. Two pins on the device are configurable as analog inputs or reference inputs. The AD7708 is a 16-bit version of the AD7718. Input signal ranges from 20 mV to 2.56 V can be directly converted using these ADCs. Signals can be converted directly from a transducer without the need for signal conditioning.
The device operates from a 32 kHz crystal with an on-board PLL generating the required internal operating frequency. The output data rate from the part is software programmable. The peak-to-peak resolution from the part varies with the programmed gain and output data rate.
The part operates from a single 3 V or 5 V supply. When operating from 3 V supplies, the power dissipation for the part is 3.84 mW typ. Both parts are pin-for-pin compatible allowing an upgradable path from 16 to 24 bits without the need for hardware modifications. The AD7708/AD7718 are housed in 28-lead SOIC and TSSOP packages.
Features
- 8-/10-Channel, High Resolution - ADCs
- AD7708 Has 16-Bit Resolution
- AD7718 Has 24-Bit Resolution
- Factory-Calibrated
- Single Conversion Cycle Setting
- Programmable Gain Front End
- Simultaneous 50 Hz and 60 Hz Rejection
- VREF Select Allows Absolute and Ratiometric Measurement Capability
- Operation Can Be Optimized for Analog Performance <CHOP=0> or Channel Throughput <CHOP=1>
- 3-Wire Serial
- SPI, QSPI, MICROWIRE, and DSP-Compatible
- Schmitt Trigger on SCLK
- Specified for Single 3 V and 5 V Operation
- Normal: 1.28 mA Typ @3V
- Power-Down: 30 μA (32 kHz Crystal Running)
- On-Chip Functions Rail-to-Rail Input Buffer and PGA 2-Bit Digital I/O Port
Applications
- - Industrial Process Control - Instrumentation - Pressure Transducers - Portable Instrumentation - Smart Transmitters - Data Acquisition - Programmable Logic Controllers - Converting Single-Ended Inputs - Combined Ratiometric and Absolute Value Measurement System - Optimizing Throughput while Maximizing 50 Hz and 60 Hz Rejection in a Multiplexed Data Acquisition System
Datasheet
Alternative Parts
Common AD7708BRUZ-REEL7 alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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