Analog Devices Inc. AD40xx 16/18-Bit SAR ADCs
Analog Devices AD40xx family features low-noise, low-power, precision 16-/18-Bit successive approximation register (SAR) ADCs that achieve high performance with throughputs up to 2MSPS. Operating from a 1.8V supply, the AD40xx ADCs consume as little as 14mW at 2MSPS with a minimum of 75MHz SCK rate in turbo-mode. The ADCs deliver ±1LSB INL maximum with no missing codes at 16-/18-Bits and 93dB/100.5dB SNR.
AD40xx Ease-of-Use Features
Analog Devices AD40xx family incorporates ease-of-use features that lower the signal chain power, reduce signal chain complexity, and enable higher channel density. The high-Z mode, along with a long acquisition phase, eliminates the requirement for a dedicated high-power, high-speed ADC driver. This expands the range of low-power precision amplifiers that can drive these ADCs directly while still achieving optimum performance.
The AD40xx input-span compression feature allows the ADC driver amplifier and the ADC to operate off common supply rails. The input-span compression feature does not need a negative supply and preserves the full ADC code range.
The low serial peripheral interface (SPI) clock rate reduces the digital input/output power consumption, broadens processor options, and simplifies the task of sending data across digital isolation.
Features
- 2MSPS maximum throughput
- 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, status word
- Single 1.8V supply operation with 1.71V to 5.5V logic interface
- No latency/pipeline delay SAR architecture
- −40°C to +125°C operation temperature
- Serial interface SPI-/QSPI-/MICROWIRE-/DSP-compatible
- Ability to daisy-chain multiple ADCs and busy indicator
- 3mm × 3mm LFCSP and 3mm × 4.90mm MSOP 10-lead packages
- AD4000/AD4004/AD4008 Specific Features
- ±1LSB maximum INL
- Guaranteed 16-bit no missing codes
- Low power
- 9.75mW at 2MSPS, 4.9mW at 1MSPS, 2.5mW at 500kSPS (VDD only)
- 70μW at 10kSPS, 14mW at 2MSPS (total)
- SNR: 93dB typical at 1kHz, VREF=5V; 90dB typical at 100kHz
- THD: −115dB typical at 1kHz, VREF=5V; −95dB typical at 100kHz
- Pseudo differential (single-ended) analog input range: 0V to VREF with VREF between 2.4V to 5.1V
- AD4002/AD4006/AD4010 Specific Features
- ±3.2LSB maximum INL
- Guaranteed 18-bit no missing codes
- Low power
- 9.75mW at 2MSPS, 4.9mW at 1MSPS, 2.5mW at 500kSPS (VDD only)
- 70μW at 10kSPS, 14mW at 2MSPS (total)
- SNR: 95dB typical at 1kHz, VREF=5V; 95dB typical at 100kHz
- THD: −125dB typical at 1kHz, VREF=5V; −108dB typical at 100kHz
- Pseudo differential (single-ended) analog input range:
- 0V to VREF with VREF between 2.4V to 5.1V
- 0V to VREF with VREF between 2.4V to 5.1V
- AD4003/AD4007/AD4011 Specific Features
- ±1LSB (±3.8ppm) maximum INL
- Guaranteed 18-bit no missing codes
- Low power
- 9.5mW at 2MSPS, 4.9mW at 1MSPS, 2.4mW at 500kSPS (VDD only)
- 80μW at 10kSPS, 16mW at 2MSPS (total)
- SNR: 100.5dB typical at 1kHz, VREF=5V; 99dB typical at 100kHz
- THD: −123dB typical at 1kHz, VREF=5V; −100dB typical at 100kHz
- Differential analog input range: ±VREF
- 0V to VREF with VREF between 2.4V to 5.1V
Applications
- Automatic test equipment
- Machine automation
- Medical equipment
- Battery-powered equipment
- Precision data acquisition systems
Block Diagram
Videos
Evaluation Boards
EVAL-AD4000FMCZ 16-Bit, 2MSPS Precision Pseudo Differential ADC Evaluation Board demonstrates the performance of the 16-Bit AD4000 ADCs and provides an easy-to-understand interface for a variety of system applications.
EVAL-AD4001FMCZ 16-Bit, 2MSPS, Precision SAR Differential ADC Evaluation Board demonstrates the performance of the 16-Bit AD4001 and AD4005 ADCs.
EVAL-AD4002FMCZ 18-Bit, 2MSPS Precision Pseudo Differential SAR ADC Evaluation Board demonstrates the performance of AD4002, AD4006, and AD4010 ADCs.
EVAL-SDP-CH1Z High-Speed System Demonstration Platform includes a series of controller boards, interposer boards, and daughter boards. The SDP high-speed (SDP-H1) controller board is part of the EVAL-SDP-CH1Z SDP. Designers can use the SDP-H1 controller board with an evaluation board to provide a way of communicating with the PC from the system under evaluation.
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