AD4003 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD4003
Manufacturer

ADI
ChipWorker Part#

CW760398196
Description

18Bit, 2MSPS Precision, Differential SAR ADC
Documentation

Datasheet

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AD4003 Specifications

Attribute	Attribute Value

Part Number	AD4003
Manufacturer	ADI
ChipWorker Part#	CW760398196
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The AD4003/AD4007/AD4011 are low noise, low power, high speed, 18-bit, precision successive approximation register (SAR) analog-to-digital converters (ADCs). The AD4003, AD4007, and AD4011 offer 2 MSPS, 1 MSPS, and 500 kSPS throughputs, respectively. They incorporate ease of use features that reduce signal chain power consumption, reduce signal chain complexity, and enable higher channel density. The high-Z mode, coupled with a long acquisition phase, eliminates the need for a dedicated high power, high speed ADC driver, thus broadening the range of low power precision amplifiers that can drive these ADCs directly while still achieving optimum performance. The input span compression feature enables the ADC driver amplifier and the ADC to operate off common supply rails without the need for a negative supply while preserving the full ADC code range. The low serial peripheral interface (SPI) clock rate requirement reduces the digital input/output power consumption, broadens processor options, and simplifies the task of sending data across digital isolation. Operating from a 1.8 V supply, the AD4003/AD4007/AD4011 have a ±VREF fully differential input range with VREF ranging from 2.4 V to 5.1 V. The AD4003 consumes only 16 mW at 2 MSPS with a minimum SCK rate of 75 MHz in turbo mode, the AD4007 consumes only 8 mW at 1 MSPS, and the AD4011 consumes only 4 mW at 500 kSPS. The AD4003/AD4007/AD4011 all achieve ±1.0 LSB integral nonlinearty error (INL) maximum, guaranteed no missing codes at 18 bits with 100.5 dB typical signal-to-noise ratio (SNR) for 1 kHz inputs. The reference voltage is applied externally and can be set independently of the supply voltage. The SPI-compatible versatile serial interface features seven different modes including the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. The AD4003/AD4007/AD4011 are compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply. The AD4003/AD4007 are available in a 10-lead MSOP and LFCSP, and the AD4011 is available in a 10-lead LFCSP, with operation specified from −40°C to +125°C. The devices are pin compatible with the 16-bit, 2 MSPS AD4000
**Applications**
Automatic test equipment
Machine automation
Medical equipment
Battery-powered equipment
Precision data acquisition systems
### Features and Benefits
Throughput: 2 MSPS option
INL: ±1.0 LSB (±3.8 ppm) maximum
Guaranteed 18-bit no missing codes
Low power
9.5 mW at 2 MSPS, 4.9 mW at 1 MSPS, 2.4 mW at 500 kSPS (VDD only)
80 μW at 10 kSPS, 16 mW at 2 MSPS (total)
SNR: 100.5 dB typical at 1 kHz, VREF = 5 V; 99 dB typical at 100 kHz
THD: −123 dB typical at 1 kHz, VREF = 5 V; −100 dB typical at 100 kHz
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
Differential analog input range: ±VREF
0 V to VREF with VREF from 2.4 V to 5.1 V
Single 1.8 V supply operation with 1.71 V to 5.5 V logic interface
SAR architecture: no latency/pipeline delay, valid first conversion
First conversion accurate
Guaranteed operation: −40°C to +125°C
SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
Ability to daisy-chain multiple ADCs and busy indicator
10-lead packages: 3 mm × 3 mm LFCSP, 3 mm × 4.90 mm MSOP

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