AD7782: 2-Channel, Read-Only, Pin-Configured, 24-bit Sigma-Delta ADC
The AD7782 and AD7783 are 24-bit low cost, low power Sigma Delta ADCs intended for dc and low frequency ac measurement applications. They are Read-only ADCs and have no writeable registers. This leads ...More
AD7782: 2-Channel, Read-Only, Pin-Configured, 24-bit Sigma-Delta ADC
Product Description
The AD7782 and AD7783 are 24-bit low cost, low power Sigma Delta ADCs intended for dc and low frequency ac measurement applications. They are Read-only ADCs and have no writeable registers. This leads to a very simple interface between ADC and controller. Since their power consumption is low, the devices can be loop powered, battery powered or locally powered. The two-setting on-chip PGA can accommodate either a low-level or high-level analog input with no external signal conditioning hardware. Operating options are pin-programmable, not software programmable.
Features
- 2-Channel, 24-Bit Σ-Δ ADC
Pin Configurable (No Programmable Registers)
Pin Selectable Input Channels
Pin Programmable Input Ranges (±2.56 V or ±160 mV) - Fixed 19.79 Hz Update Rate
- Simultaneous 50 Hz and 60 Hz Rejection
- 24-Bit No Missing Codes
- 18.5-Bit p-p Resolution (±2.56 V Range)
- On-Chip Functions Rail-Rail Input Buffer and PGA
- 16.5-Bit p-p Resolution (±160 mV Range)
- Interface
Master or Slave Mode of Operation
Slave Mode:
3-Wire Serial
SPI®, QSPI™, MICROWIRE™, and DSP-Compatible
Schmitt Trigger on SCLK - Power
Specified for Single 3 V and 5 V Operation
Normal: 1.3 mA @ 3 V
Power-Down: 9 µA
AD7949 - 14-Bit, 8-Channel, 250 kSPS PulSAR® ADC
AD7682 - 16-Bit, 4-Channel, 250 kSPS PulSAR® ADC
AD7262 - True Differential, Dual, 1 MSPS, 14-Bit/12-Bit, 2-Channel SAR ADC With PGA
EVAL-CED - Converter Evaluation and Development (CED) Board
| Part# | Res | Throughput Rate | # of Inputs | Operating Pwr Diss |
|---|---|---|---|---|
| AD7746 | 24 | 90SPS | 2 | 4.25mW |
| AD7782 | 24 | 19.79SPS | 2 | 8.5mW |
| AD7787 | 24 | 120SPS | 2 | 800µW |
| AD7793 | 24 | 470SPS | 3 | 2.5mW |
| AD7791 | 24 | 120SPS | 1 | 800µW |
| AD7713 | 24 | 205SPS | 3 | 5.5mW |
| AD7745 | 24 | 90SPS | 1 | 4.25mW |
| AD7783 | 24 | 19.79SPS | 1 | 8.5mW |
| AD7797 | 24 | 123SPS | 1 | 1.6mW |
| AD7799 | 24 | 470SPS | 3 | 2.5mW |
| AD7714 | 24 | 1KSPS | 5 | 7mW |
AD7782 Model Options
| Model | Status | Package | Pins | Temp. Range |
Price* (1000 pcs.) |
Available | ROHS Compilant | Samples Cart | Purchase Cart |
|---|---|---|---|---|---|---|---|---|---|
| AD7782BRU | Prodn | 16 ld TSSOP | 16 | Ind | $4.68 | 07/11/2008 |
N
Material Declaration |
Contact ADI | Add To Cart |
| AD7782BRU-REEL | Prodn | 16 ld TSSOP | 16 | Ind | $4.68 | 09/26/2008 |
N
Material Declaration |
Contact ADI | Add To Cart |
| AD7782BRU-REEL7 | Contact ADI | 16 ld TSSOP | 16 | Ind | - | - |
N
Material Declaration |
Contact ADI | Contact ADI |
| AD7782BRUZ | Prodn | 16 ld TSSOP | 16 | Ind | $4.25 | - |
Y
Material Declaration |
Add To Cart | Add To Cart |
| AD7782BRUZ-REEL | Prodn | 16 ld TSSOP | 16 | Ind | $4.25 | 08/29/2008 |
Y
Material Declaration |
Contact ADI | Add To Cart |
| AD7782BRUZ-REEL7 | Prodn | 16 ld TSSOP | 16 | Ind | $4.25 | 08/29/2008 |
Y
Material Declaration |
Contact ADI | Add To Cart |
| EVAL-AD7782EB | Prodn | EVALUATION BOARDS | - | TBD | $150.00 | 09/05/2008 | E | Contact ADI | Add To Cart |
Help
- Pre-Release: The model has not been released to general production, but samples may be available.
- Production: The model is currently being produced, and generally available for purchase and sampling.
- Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
- Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
For detailed drawings and chemical composition please consult our Package Site
- Commercial: 0 to +70 degrees Celsius
- Military : -55 to +125 degrees Celsius
- Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
- Automotive: -40 to +125 degrees Celsius
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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