AD7708
PRODUCTION16-Bit 8/10-Channel, Low Voltage, Low Power, Sigma Delta ADC
- Part Models
- 6
- 1ku List Price
- Starting From $5.62
Overview
- 8-/10-Channel, High Resolution Σ-Δ ADCs
- 16-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)
The AD7708 / AD7718 are complete analog front-ends for low frequency measurement applications. The AD7718 contains a 24-bit sigma delta 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. Inputs signal ranges from 20mV to 2.56V 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 rat
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
APPLICATIONS
- Industrial Process Control
- Instrumentation
- Pressure Transducers
- Portable Instrumentation
- Smart Transmitters
Documentation
Data Sheet 1
Application Note 13
Technical Articles 4
Evaluation Design File 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 |
|---|---|---|---|
| AD7708BRUZ | 28-Lead TSSOP (4.4mm x 9.7mm) | ||
| AD7708BRUZ-REEL | 28-Lead TSSOP (4.4mm x 9.7mm) | ||
| AD7708BRUZ-REEL7 | 28-Lead TSSOP (4.4mm x 9.7mm) | ||
| AD7708BRZ | 28-Lead SOIC (Wide) | ||
| AD7708BRZ-REEL | 28-Lead SOIC (Wide) | ||
| AD7708BRZ-REEL7 | 28-Lead SOIC (Wide) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 6, 2026 - 25_0172 Gold to Copper Wire Conversion at Amkor Philippines and Carsem Malaysia for Select TSSOP/MSOP Products |
||
| AD7708BRUZ | PRODUCTION | |
| AD7708BRUZ-REEL | PRODUCTION | |
| AD7708BRUZ-REEL7 | PRODUCTION | |
|
May 20, 2024 - 23_0143 Qualification of an Alternate Wafer Fab Site for 0.5um TSMC CMOS Process |
||
| AD7708BRUZ | PRODUCTION | |
| AD7708BRUZ-REEL | PRODUCTION | |
| AD7708BRUZ-REEL7 | PRODUCTION | |
| AD7708BRZ | PRODUCTION | |
| AD7708BRZ-REEL | PRODUCTION | |
| AD7708BRZ-REEL7 | PRODUCTION | |
|
Apr 5, 2021 - 21_0035 Amkor Philippines as an Alternate Site for TSSOP_4.4 |
||
| AD7708BRUZ | PRODUCTION | |
| AD7708BRUZ-REEL | PRODUCTION | |
| AD7708BRUZ-REEL7 | PRODUCTION | |
|
Feb 11, 2011 - 10_0005 Halogen Free Material Change for TSSOP Products Assembled at Amkor |
||
| AD7708BRUZ | PRODUCTION | |
| AD7708BRUZ-REEL | PRODUCTION | |
| AD7708BRUZ-REEL7 | PRODUCTION | |
|
Jul 21, 2014 - 13_0297 Qualification of ASE Chungli, as an Alternate Assembly Site for Select 16L, 20L, 24L and 28L SOICW Packages |
||
| AD7708BRZ | PRODUCTION | |
| AD7708BRZ-REEL | PRODUCTION | |
| AD7708BRZ-REEL7 | PRODUCTION | |
|
Aug 4, 2010 - 10_0117 Halogen Free Material Change for SOIC_W Products at Carsem |
||
| AD7708BRZ | PRODUCTION | |
| AD7708BRZ-REEL | PRODUCTION | |
| AD7708BRZ-REEL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 1
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Data Isolators 7 | ||
| ADUM7440 | PRODUCTION | 1 kV RMS Quad-Channel Digital Isolator |
| ADUM7441 | PRODUCTION | 1 kV RMS Quad-Channel Digital Isolator |
| ADUM7442 | PRODUCTION | 1 kV RMS Quad-Channel Digital Isolator |
| ADUM1400 | PRODUCTION | Quad-Channel Digital Isolator (4/0 Channel Directionality) |
| ADUM1200 | PRODUCTION | Dual-Channel Digital Isolator (2/0 Channel Directionality) |
| ADUM5402 | PRODUCTION | Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (2/2 channel directionality) |
| ADUM5403 | PRODUCTION | Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (1/3 channel directionality) |
| Interface Transceivers 2 | ||
| ADUM4160 | PRODUCTION | Full/Low Speed USB Digital Isolator |
| ADUM5401 | PRODUCTION | Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (3/1 channel directionality) |
| Voltage References 6 | ||
| AD589 | NOT RECOMMENDED FOR NEW DESIGNS | Two-Terminal IC 1.2 V Reference |
| AD1580 | PRODUCTION | 1.2 V Micropower, Precision Shunt Voltage Reference |
| ADR512 | PRODUCTION | 1.2 V Precision Low Noise Shunt Voltage Reference |
| AD780 | PRODUCTION | 2.5 V/3.0 V High Precision Reference |
| REF43 | NOT RECOMMENDED FOR NEW DESIGNS | +2.5V Low Power Precision Voltage Reference |
| REF192 | PRODUCTION | 2.5V Precision Micropower, Low Dropout, Low Voltage Reference |
Tools & Simulations
Sigma-Delta ADC Tutorial
An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.
Open ToolAD7708 IBIS Model 2
Evaluation Kits
AD7708 Evaluation Kit