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AD4020

Analog Devices
Part Number AD4020
Manufacturer Analog Devices
Description Differential SAR ADC
Published Jun 24, 2019
Detailed Description Data Sheet 20-Bit, 1.8 MSPS/1 MSPS/500 kSPS, Easy Drive, Differential SAR ADCs AD4020/AD4021/AD4022 FEATURES Easy Driv...
Datasheet PDF File AD4020 PDF File

AD4020
AD4020

Overview
Data Sheet 20-Bit, 1.
8 MSPS/1 MSPS/500 kSPS, Easy Drive, Differential SAR ADCs AD4020/AD4021/AD4022 FEATURES Easy Drive Greatly reduced input kickback Input current reduced to 0.
5 μA/MSPS Enhanced acquisition phase, ≥77% of cycle time at 1 MSPS First conversion accurate, no latency or pipeline delay Input span compression for single-supply operation Fast conversion allows low SPI clock rates Input overvoltage clamp protection sinks up to 50 mA SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface High performance Differential analog input range: ±VREF, VREF from 2.
4 V to 5.
1 V Throughput: 1.
8 MSPS/1 MSPS/500 kSPS options INL: ±3.
1 ppm maximum Guaranteed 20-bit, no missing codes SNR: 100.
5 dB at fIN = 1 kHz, VREF = 5 V THD: −123 dB at fIN = 1 kHz, −100 dB at fIN = 100 kHz SINAD: 89 dB at fIN = 900 kHz (see Figure 17) Oversampled dynamic range 104 dB for OSR = 2 131 dB for OSR = 1024 Low power Single 1.
8 V supply operation with 1.
71 V to 5.
5 V logic interface 2.
7 mW at 500 kSPS (VDD only) 83 µW at 10 kSPS, 15 mW at 1.
8 MSPS (total power) 10-lead packages: 3 mm × 3 mm LFCSP, 3 mm × 4.
90 mm MSOP Pin compatible with AD4003/AD4007/AD4011 family Guaranteed operation: −40°C to +125°C APPLICATIONS Automated test equipment Machine automation Medical equipment Battery-powered equipment Precision data acquisition systems Instrumentation and control systems FUNCTIONAL BLOCK DIAGRAM 2.
5V TO 5V 1.
8V VREF VREF/2 0 VREF VREF/2 0 10µF REF VDD AD4020/AD4021/AD4022 HIGH-Z MODE IN+ 20-BIT SAR ADC IN– CLAMP SPAN COMPRESSION TURBO MODE SERIAL INTERFACE STATUS BITS GND VIO 1.
8V TO 5V SDI SCK SDO CNV 3-WIRE OR 4-WIRE SPI INTERFACE (DAISY CHAIN, CS) Figure 1.
Rev.
C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change withou...


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