AD7686 500 kSPS 16-BIT PulSAR® A/D Converter in MSOP/QFN
The AD7686 is a 16-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single 5 V power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The part also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, the AD7686 samples an analog input IN+ between 0 V to REF with respect to a ground sense IN−. The reference voltage, REF, is applied externally and can be set up to the supply voltage.
Power dissipation scales linearly with throughput.
The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus or provides an optional busy indicator. This device is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO.
The AD7686 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.
Applications
- Battery-powered equipment
- Data acquisitions
- Instrumentation
- Medical instruments
- Process controls
Features and Benefits- 16-bit resolution with no missing codes
- Throughput: 500 kSPS
- INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR)
- SINAD: 92.5 dB @ 20 kHz
- THD: −110 dB @ 20 kHz
- Pseudo differential analog input range 0 V to VREF with VREF up to VDD
- No pipeline delay
- Single-supply 5 V operation with
1.8 V/2.5 V/3 V/5 V logic interface - Serial interface SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible
- Daisy-chain multiple ADCs and busy indicator
- Powerdissipation
3.75 μW @ 5 V/100 SPS
3.75 mW @ 5 V/100 kSPS - Standby current: 1 nA
| AD7685 IBIS Models
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Data Sheets
Application Notes
User Guides
Product Highlight
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD7686BCPZRL7 Production | 10 ld LFCSP (3x3mm) | REEL 1500 | -40 to 85C | 0 | 12.14 | Y |
| AD7686BRMZ Production | 10 ld MSOP | OTH 50 | -40 to 85C | 13.44 | 12.14 | Y |
| AD7686BRMZRL7 Production | 10 ld MSOP | REEL 1000 | -40 to 85C | 0 | 12.14 | Y |
| AD7686CCPZRL7 Production | 10 ld LFCSP (3x3mm) | REEL 1500 | -40 to 85C | 0 | 14.12 | Y |
| AD7686CRMZ Production | 10 ld MSOP | OTH 50 | -40 to 85C | 15.62 | 14.12 | Y |
| AD7686CRMZRL7 Production | 10 ld MSOP | REEL 1000 | -40 to 85C | 0 | 14.12 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-AD7685-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7686-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7686SDZ | Evaluation Board SDP Interface | 99 | Y |
| EVAL-AD7687-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7688-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7690-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7691-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7693-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7942-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7946-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7980-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7982-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7983-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7984-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7988-1-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7988-5-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-SDP-CB1Z | Evaluation Controller Board SDP | 99 | Y |
| SDP-PMD-IB1Z | Evaluation Interposer Board PMOD to SDP w/ Power Supply | 55 | Y |
Reference Materials
