AD7986 18-Bit, 2 MSPS PulSAR 15 mW ADC in QFN
The AD7986 is an 18-bit, 2 MSPS successive approximation, analog-to-digital converter (ADC). It contains a low power,
high speed, 18-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and
a versatile serial interface port. On the rising edge of CNV, the AD7986 samples the voltage difference between the IN+ and
IN− pins. The voltages on these pins usually swing in opposite phases between 0 V and VREF. It features a very high sampling
rate turbo mode (TURBO = high) and a reduced power normal mode (TURBO = low) for low power applications where the
power is scaled with the throughput.
In normal mode (TURBO = low), the SPI-compatible serial interface also features the ability, using the SDI input, to daisychain
several ADCs on a single 3-wire bus and provide an optional busy indicator. It is compatible with 1.8 V, 2.5 V, and 2.7 V using the
separate VIO supply.
The AD7986 is available in a 20-lead LFCSP with operation
specified from −40°C to +85°C.
Applications
- Battery-powered equipment
- Data acquisition systems
- Medical instruments
- Seismic data acquisition systems
Features and Benefits18-bit resolution with no missing codesThroughput: 2 MSPS (TURBO = high), 1.5 MSPS (TURBO = low)Low power dissipation15 mW at 2 MSPS, with external reference26 mW at 2 MSPS with internal referenceINL: ±1 LSB typical, ±2.5 LSB maximumSNR95.5 dB, with on-chip reference97.0 dB, with external reference4.096 V internal reference: typical drift of 10 ppm/°CTrue differential analog input voltage range: ±VREF0 V to VREF with VREF up to 5.0 VAllows use of any input rangeSee data sheet for additional features | |
Data Sheets
Application Notes
User Guides
Technical Books
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD7986BCPZ Production | 20 ld LFCSP (4x4mm 2.5EP) | OTH 490 | -40 to 85C | 22.36 | 18.95 | Y |
| AD7986BCPZ-RL7 Production | 20 ld LFCSP (4x4mm 2.5EP) | REEL 1500 | -40 to 85C | 0 | 18.95 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-AD7986FMCZ | Evaluation Board | 99 | Y |
| EVAL-SDP-CH1Z | Controller Board | 199 | Y |
Reference Materials
