AD7685BRMZRL7
Analog to Digital Converters (ADC)
Technical Specifications
| Type | Description |
|---|---|
| Quiescent Current (Iq) | 1nA |
| Integral non - linearity | 0.6LSB |
| Voltage Reference | External |
| Clock/Oscillator | Built-in |
| Resolution(Bits) | 250kHz;16 |
| S/N Ratio | 93.5dB |
| DNL (LSB) | 0.7LSB |
| ADC architecture | SAR |
| Type | Description |
|---|---|
| Programmable Gain | - |
| Operating Temp | -40°C ~ +85°C |
| Interface | SPI |
| Working Voltage V | 3.9 V |
| Channels | 1.0 |
| Maximum Clock Speed | - |
| Features | Multi-chip synchronization |
| Package / Case | MSOP-10 |
Product Introduction
The AD7685 is a 16-bit, charge redistribution successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.3 V to 5.5 V. 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, it 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. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate supply VIO.
The AD7685 is housed in a 10-lead MSOP or a 10-lead LFCSP with operation specified from -40°C to +85°C.
Features
- 16-bit resolution with no missing codes
- Throughput: 250 kSPS
- INL: ±0.6 LSB typical, ±z LSB maximum (±0.003% of FSR)
- SINAD: 93.5 dB at 20 kHz
- THD: −110 dB at 20 kHz
- Pseudo differential analog input range 0 V to VREF with VREF up to VDD
- No pipeline delay
- Single-supply operation 2.3 V to 5.5 V with 1.8 V to 5 V logic interface
- Proprietary serial interface: SPI-/QSPI-/MICROWIRE-/DSP compatible
- Daisy-chain multiple ADCs, BUSY indicator
- Power dissipation 7.4 μW at 2.5 V/100 SPS, 1.35 mW at 2.5 V/100 kSPS, 4 mW at 5 V/100 kSPS
- Standby current: 1 nA
- 10-lead package: MSOP (MSOP-8 size) and 3 mm×3 mm LFCSP (SOT-23 size)
- Pin-for-pin-compatible with 10-lead MSOP/PulSAR ADCs
Applications
- - Battery-powered equipment - Medical instruments - Mobile communications - Personal digital assistants (PDAs) - Data acquisition - Instrumentation - Process controls
Datasheet
Alternative Parts
Common AD7685BRMZRL7 alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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