Analog Devices Inc. AD4001/AD4005 16-Bit Differential SAR ADCs
Analog Devices Inc. AD4001/AD4005 16-Bit Differential Successive Approximation Register (SAR) ADCs feature low noise, low power, and are high-speed ADCs. The AD4001 ADCs offer a 2 MSPS throughput and the AD4005 ADCs offer a 1 MSPS throughput. These 16-bit SAR ADCs operate at 1.8V single-supply voltage with 1.71V to 5.5V logic interface. The AD4001/AD4005 ADCs feature long acquisition phase, input span compression, high-Z mode, input overvoltage clamp circuit, and fast conversion time allows low SPI clock rates.
The AD4001/AD4005 ADCs are compatible with 1.8V, 2.5V, 3V, and 5V logic using the separate VIO supply. These 16-bit ADCs undergo an ability to daisy-chain multiple ADCs and busy indicator. The ADCs are available in a 10-lead 3mm x 3mm LFCSP and 3mm x 4.90mm MSOP and operate at -40°C to 125°C temperature range. Typical applications include battery-powered equipment, precision data acquisition systems, automatic test equipment, and machine automation.
Features
- Throughput:
- AD4001 2 MSPS
- AD4005 1 MSPS
- Integral Non-Linearity (INL): ±0.4 LSB maximum
- Guaranteed 16-bit no missing codes
- Low power:
- 9.5mW at 2 MSPS and 4.9mW at 1 MSPS (VDD only)
- 80μW at 10 kSPS and 16mW at 2 MSPS (total)
- Ease of use features reduce system power and complexity:
- Input overvoltage clamp circuit
- Reduced nonlinear input charge kickback
- High-Z mode
- Long acquisition phase
- Input span compression
- Fast conversion time allows low SPI clock rates
- SPI-programmable modes, read/write capability, and status word
- Differential analog input range: ±VREF:
- 0V to VREF with VREF from 2.4V to 5.1V
- Single 1.8V supply operation with 1.71V to 5.5V logic interface
- SAR architecture:
- No latency/pipeline delay and valid first conversion
- First accurate conversion
- -40°C to 125°C operating temperature range
- SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
- Ability to daisy-chain multiple ADCs and busy indicator
- 10-lead packages:
- 3mm × 3mm LFCSP
- 3mm × 4.90mm MSOP
Applications
- Automatic test equipment
- Machine automation
- Medical equipment
- Battery-powered equipment
- Precision data acquisition systems
Functional block Diagram
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