The AD7682/AD7689 are 4-channel/8-channel, 16-bit, charge redistribution successive approximation register (SAR) analogto-digital converters (ADCs) that operate from a single power supply, VDD.
The AD7682/AD7689 contain all components for use in a multichannel, low power data acquisition system, including a true 16-bit SAR ADC with no missing codes; a 4-channel (AD7682) or 8-channel (AD7689) low crosstalk multiplexer that is useful for configuring the inputs as single-ended (with or without ground sense), differential, or bipolar; an internal low drift reference (selectable 2.5 V or 4.096 V) and buffer; a temperature sensor; a selectable one-pole filter; and a sequencer that is useful when channels are continuously scanned in order.
The AD7682/AD7689 use a simple SPI interface for writing to the configuration register and receiving conversion results. The SPI interface uses a separate supply, VIO, which is set to the host logic level. Power dissipation scales with throughput.
The AD7682/AD7689 are housed in a tiny 20-lead LFCSP and 20-lead WLCSP with operation specified from −40°C to +85°C.
Applications
Features and Benefits | Analog to Digital Converters |
| Document | note |
| AD7682/AD7689: 16-Bit, 4-Channel/8-Channel, 250 kSPS PulSAR ADC Data Sheet (Rev. F) | PDF 673.58 K |
| Document | note |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD7682BCBZ-RL7 Production | 20-Ball Wafer Level Chip Scale Package [WLCSP] | REEL 1500 | 0 | 5.95 | Y | |
| AD7682BCPZ Production | 20 ld LFCSP (4x4mm 2.5EP) | OTH 490 | -40 to 85C | 6.65 | 6.01 | Y |
| AD7682BCPZRL7 Production | 20 ld LFCSP (4x4mm 2.5EP) | REEL 1500 | -40 to 85C | 0 | 6.01 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| EVAL-AD7682EDZ | Evaluation Board | 99 | Y |
| EVAL-CED1Z | Evaluation Board | 249 | Y |
