Datasheet AD4003, AD4007, AD4011 (Analog Devices)

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18-Bit, 2 MSPS/1 MSPS/500 kSPS, Precision, Differential SAR ADCs Data Sheet AD4003/ AD4007/ AD4011 FEATURES GENERAL DESCRIPTION Throughput: 2 MSPS/1 MSPS/500 kSPS options
The AD4003/AD4007/AD4011 are low noise, low power, high
INL: ±1.0 LSB (±3.8 ppm) maximum
speed, 18-bit, precision successive approximation register (SAR)
Guaranteed 18-bit no missing codes
analog-to-digital converters (ADCs). The AD4003, AD4007, and
Low power
AD4011 offer 2 MSPS, 1 MSPS, and 500 kSPS throughputs,
9.5 mW at 2 MSPS, 4.9 mW at 1 MSPS, 2.4 mW at 500 kSPS
respectively. They incorporate ease of use features that reduce
(VDD only)
signal chain power consumption, reduce signal chain complexity,
80 µW at 10 kSPS, 16 mW at 2 MSPS (total)
and enable higher channel density. The high-Z mode, coupled
SNR: 100.5 dB typical at 1 kHz, VREF = 5 V; 99 dB typical at
with a long acquisition phase, eliminates the need for a dedicated
100 kHz
high power, high speed ADC driver, thus broadening the range
THD: −123 dB typical at 1 kHz, VREF = 5 V; −100 dB typical at
of low power precision amplifiers that can drive these ADCs
100 kHz
directly while still achieving optimum performance. The input
Ease of use features reduce system power and complexity
span compression feature enables the ADC driver amplifier and
Input overvoltage clamp circuit
the ADC to operate off common supply rails without the need for
Reduced nonlinear input charge kickback
a negative supply while preserving the ful ADC code range. The
High-Z mode
low serial peripheral interface (SPI) clock rate requirement
Long acquisition phase
reduces the digital input/output power consumption, broadens
Input span compression
processor options, and simplifies the task of sending data across
Fast conversion time allows low SPI clock rates
digital isolation.
SPI-programmable modes, read/write capability, status
Operating from a 1.8 V supply, the AD4003/AD4007/AD4011
word Differential analog input range: ±V
have a ±VREF ful y differential input range with VREF ranging
REF 0 V to V
from 2.4 V to 5.1 V. The AD4003 consumes only 16 mW at 2 MSPS
REF 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
with a minimum SCK rate of 75 MHz in turbo mode. The AD4007
SAR architecture: no latency/pipeline delay, valid first
consumes only 8 mW at 1 MSPS with a minimum SCK rate of
conversion
25 MHz in turbo mode. The AD4011 consumes only 4 mW at
First accurate conversion
500 kSPS with a minimum SCK rate of 11 MHz in turbo mode.
Guaranteed operation: −40°C to +125°C
The AD4003/AD4007/AD4011 all achieve ±1.0 LSB integral
SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
nonlinearty error (INL) maximum, guaranteed no missing codes at
Ability to daisy-chain multiple ADCs and busy indicator
18 bits with 100.5 dB typical signal-to-noise ratio (SNR) for 1 kHz
10-lead packages: 3 mm × 3 mm LFCSP, 3 mm × 4.90 mm MSOP
inputs. The reference voltage is applied external y and can be set independently of the supply voltage.
APPLICATIONS
The SPI-compatible versatile serial interface features seven
Automatic test equipment
different modes including the ability, using the SDI input, to
Machine automation
daisy-chain several ADCs on a single 3-wire bus and provides
Medical equipment
an optional busy indicator. The AD4003/AD4007/AD4011 are
Battery-powered equipment
compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate
Precision data acquisition systems
VIO supply. The AD4003/AD4007 are available in a 10-lead MSOP or 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 (see Table 8).
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Document Outline Features Applications General Description Table of Contents Revision History Functional Block Diagram Specifications Timing Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Transfer Functions Applications Information Typical Application Diagrams Analog Inputs Input Overvoltage Clamp Circuit Differential Input Considerations Switched Capacitor Input RC Filter Values Driver Amplifier Choice Single to Differential Driver High Frequency Input Signals Multiplexed Applications Ease of Drive Features Input Span Compression High-Z Mode Long Acquisition Phase Voltage Reference Input Power Supply Digital Interface Register Read/Write Functionality Status Word /CS Mode, 3-Wire Turbo Mode /CS Mode, 3-Wire Without Busy Indicator /CS Mode, 3-Wire with Busy Indicator /CS Mode, 4-Wire Turbo Mode /CS Mode, 4-Wire Without Busy Indicator /CS Mode, 4-Wire with Busy Indicator Daisy-Chain Mode Layout Guidelines Evaluating the AD4003/AD4007/AD4011 Performance Outline Dimensions Ordering Guide