Data Sheet
FEATURES
Throughput: 2 MSPS/1 MSPS/500 kSPS options
INL: ±1.0 LSB (±3.8 ppm) maximum
Guaranteed 18-bit no missing codes
Low power
4.9 mW/MSPS, 2.4 mW at 500 kSPS, VDD only
8 mW/MSPS, 80 µW at 10 kSPS, 16 mW at 2 MSPS total
SNR: 100.5 dB at f
IN
= 1 kHz, 99 dB at f
IN
= 100 kHz
Oversampled SNR:
103.5 dB at 1.0 MSPS, OSR =2
130.5 dB at 1.9 kSPS, OSR = 1024
THD: −123 dB at f
IN
= 1 kHz; −100 dB at f
IN
= 100 kHz
SINAD: 89 dB at f
IN
= 1 MHz
Easy Drive
Greatly reduced input kickback
Input current reduced to 0.5 μA/MSPS
Long acquisition phase, ≥79% of cycle time at 1 MSPS
Input span compression for single-supply operation
Input overvoltage clamp protection sinks up to 50 mA
Differential input range: ±V
REF
V
REF
input range from 2.4 V to 5.1 V
Single 1.8 V supply operation with 1.71 V to 5.5 V logic interface
First conversion accurate, no latency/pipeline delay
Fast conversion time allows low SPI clock rates
SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
Ability to daisy-chain multiple ADCs
Guaranteed operation: −40°C to +125°C
10-lead packages: 3 mm × 3 mm LFCSP, 3 mm × 4.90 mm MSOP
Pin compatible with
AD4000/AD4004/AD4008
family
18-Bit, 2 MSPS/1 MSPS/500 kSPS,
Easy Drive, Differential SAR ADCs
AD4003/AD4007/AD4011
GENERAL DESCRIPTION
The
AD4003/AD4007/AD4011
are high accuracy, high speed,
low power, 18-bit, Easy Drive, precision successive approximation
register (SAR) analog-to-digital converters (ADCs). The high
throughput allows both accurate capture of high frequency signals
and decimation to achieve higher SNR, while also reducing
antialiasing filter challenges.
Easy Drive features reduce signal chain complexity and power
consumption, and enable higher channel density. The reduced
input current, particularly in high-Z mode, coupled with a long
signal acquisition phase, eliminates the need for a dedicated high
power, high speed ADC driver, which broadens the range of low
power precision amplifiers that can drive these ADCs directly
(see Figure 2). 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 input overvoltage clamp protects the
ADC inputs against overvoltages, minimizes disturbance on the
reference pin, and eliminates the need for external protection
diodes.
The low serial peripheral interface (SPI) clock rate (75 MHz for
the AD4003 in turbo mode) reduces the digital input/output
power consumption, broadens processor options, and simplifies
the task of sending data across digital isolation.
The SPI-compatible versatile serial interface features seven different
programmable modes with an optional busy indicator. Using
the SDI input, several ADCs can be daisy-chained on a single
3-wire bus. The
AD4003/AD4007/AD4011
are compatible with
1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate supply, VIO.
APPLICATIONS
Automatic test equipment
Machine automation
Medical equipment
Battery-powered equipment
Precision data acquisition systems
15
12
9
INPUT CURRENT (μA)
HIGH-Z DISABLED, 2MSPS
HIGH-Z ENABLED, 2MSPS
FUNCTIONAL BLOCK DIAGRAM
2.4V TO 5.1V
10µF
REF
1.8V
VDD
6
3
0
–3
–6
–9
–12
–4
–3
–2
–1
0
1
2
3
4
5
14957-443
AD4003/
AD4007/
AD4011
V
REF
V
REF
/2
0
V
REF
V
REF
/2
0
IN+
IN–
HIGH-Z
MODE
18-BIT
SAR
ADC
CLAMP
SPAN
COMPRESSION
GND
TURBO
MODE
SERIAL
INTERFACE
STATUS
BITS
VIO 1.8V TO 5V
SDI
3-WIRE OR
SCK 4-WIRE
SDO SPI INTERFACE
(DAISY CHAIN, CS)
CNV
14957-001
–15
–5
INPUT DIFFERENTIAL VOLTAGE (V)
Figure 1.
Rev. C
Document Feedback
Figure 2. Input Current vs. Input Differential Voltage
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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 without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
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Tel: 781.329.4700 ©2016–2019 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
AD4003/AD4007/AD4011
TABLE OF CONTENTS
Features ............................................................................................... 1
Applications ........................................................................................ 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 3
Specifications..................................................................................... 4
Timing Specifications .................................................................. 7
Absolute Maximum Ratings............................................................ 9
Thermal Resistance ...................................................................... 9
ESD Caution .................................................................................. 9
Pin Configurations and Function Descriptions ......................... 10
Typical Performance Characteristics ........................................... 11
Terminology .................................................................................... 16
Theory of Operation ...................................................................... 17
Circuit Information .................................................................... 17
Converter Operation .................................................................. 18
Transfer Functions...................................................................... 18
Applications Information .............................................................. 19
Typical Application Diagrams .................................................. 19
Analog Inputs .............................................................................. 20
Data Sheet
Driver Amplifier Choice ........................................................... 22
Ease of Drive Features ............................................................... 23
Voltage Reference Input ............................................................ 24
Power Supply............................................................................... 24
Digital Interface .......................................................................... 25
Register Read/Write Functionality........................................... 26
Status Word ................................................................................. 28
CS Mode, 3-Wire Turbo Mode ................................................. 29
CS Mode, 3-Wire Without Busy Indicator ............................. 30
CS Mode, 3-Wire with Busy Indicator .................................... 31
CS Mode, 4-Wire Turbo Mode ................................................. 32
CS Mode, 4-Wire Without Busy Indicator ............................. 33
CS Mode, 4-Wire with Busy Indicator .................................... 34
Daisy-Chain Mode ..................................................................... 35
Layout Guidelines....................................................................... 36
Evaluating the AD4003/AD4007/AD4011 Performance ...... 36
Outline Dimensions ....................................................................... 37
Ordering Guide .......................................................................... 38
Rev. C | Page 2 of 38
Data Sheet
REVISION HISTORY
4/2019—Rev.
B to Rev. C
Added Figure 2; Renumbered Sequentially ................................... 1
Changes to Features Section and General Description Section ..... 1
10/2017—Rev. A to Rev. B
Changes to Features and General Description .............................. 1
Moved Figure 1 .................................................................................. 1
Changes to Specifications Section and Table 1.............................. 4
Changes to Endnote 1 and Endnote 2, Table 1 .............................. 6
Changes to Timing Specifications Section, CNV or SDI Low to
SDO D17 (MSB) Valid Delay (CS Mode) Parameter, Table 2 .... 7
Changes to Endnote 3, Table 2 ........................................................ 7
Changes to Analog Input Parameter, Table 5 ................................ 9
Added Endnote 2, Table 5 ................................................................ 9
Changes to Figure 4 and Table 7 ...................................................10
Changes to Typical Performance Characteristics Section .........11
Reorganized Typical Performance Characteristics Section .......11
Changes to Figure 19 and Figure 19 Caption ..............................13
Changes to Figure 25 Caption through Figure 27 Caption and
Changes to Figure 28 ......................................................................14
Changes to Circuit Information Section and Table 8 .................17
Changes to Converter Operations Section and Table 9 .............18
Changes to Endnote 1 and Endnote 2, Table 9 ............................18
Changes to Applications Information Section ............................19
Moves Figure 38; Renumbered Sequentially ...............................20
Change to Analog Input Section ...................................................20
Changes to Input Overvoltage Clamp Section................................... 21
Changes to High Frequency Input Signals Section, Multiplexed
Applications Section, Driver Amplifier Choice Section, RC Filter
Values Section, Figure 39, and Figure 40 Caption ............................. 22
Changes to High-Z Mode Section, Figure 42, Figure 43, and
Figure 43 Caption ............................................................................23
Changes to Voltage Reference Input Section, Figure 44 Caption,
Figure 45, Figure 46 Caption, and Figure 47 ...............................24
Changes to Digital Interface Section, Power Supply Section, and
Figure 48 Caption ............................................................................25
Changes to Read/Write Functionality Section, Table 12, and
Table 14 .............................................................................................26
Changes to Figure 49 ......................................................................27
Changes to Status Word Section and Table 15 ............................28
Changes to CS Mode, 4-Wire Turbo Mode Section .......................32
Changes to CS Mode, 4-Wire Without Busy Indicator Section .....33
Changes to CS Mode, 4-Wire With Busy Indicator Section......34
Change to Daisy-Chain Mode Section .........................................35
Changes to Evaluating the AD4003/AD4007/AD4011
Performance Section .......................................................................36
Changes to Ordering Guide ...........................................................38
AD4003/AD4007/AD4011
7/2017—Rev. 0 to Rev. A
Added AD4007 and AD4011............................................ Universal
Changes to Features Section and General Description ................ 1
Moved Figure 1 .................................................................................. 3
Changes to Specifications Section .................................................. 4
Changes to Table 1 ............................................................................ 4
Changes to Timing Specifications Section .................................... 7
Changes to Table 2 ............................................................................ 7
Changes to Absolute Maximum Ratings Section ......................... 9
Added Endnote 2 and Endnote 3, Table 6 ..................................... 9
Changes to Typical Performance Characteristics Section ......... 11
Changes to Figure 11 and Figure 14 ............................................. 12
Changes to Figure 19 and Figure 21 ............................................. 13
Added Figure 25 and Figure 26; Renumbered Sequentially ...... 14
Moved Terminology Section ......................................................... 16
Changes to Terminology Section .................................................. 16
Changes to Circuit Information Section and Table 8 ................. 17
Moved Figure 38 .............................................................................. 22
Changes to High Frequency Input Signals Section .................... 22
Added Multiplexed Applications Section .................................... 22
Added Figure 41 .............................................................................. 23
Moved Figure 42 .............................................................................. 23
Changes to High-Z Mode Section and Figure 43 ....................... 23
Changes to Voltage Reference Input Section ............................... 24
Changes to Figure 48, Digital Interface Section, and Table 11 ....... 25
Changes to CS Mode, 3-Wire Turbo Mode Section ................... 29
Added Figure 53 .............................................................................. 29
Changes to CS Mode, 4-Wire Turbo Mode Section ................... 32
Added Figure 59 .............................................................................. 32
Change to CS Mode, 4-Wire with Busy Signal Indicator
Section .............................................................................................. 34
Changes to Layout Guidelines Section and Evaluating the
AD4003/AD4007/AD4011 Performance Section ....................... 36
Updated Outline Dimensions........................................................ 37
Changes to Ordering Guide ........................................................... 38
10/2016—Revision 0: Initial Version
Rev. C | Page 3 of 38
AD4003/AD4007/AD4011
SPECIFICATIONS
Data Sheet
VDD = 1.71 V to 1.89 V; VIO = 1.71 V to 5.5 V; V
REF
= 5 V; all specifications T
MIN
to T
MAX
, high-Z mode disabled, span compression
disabled, turbo mode enabled, and sampling frequency f
S
= 2 MSPS for the
AD4003,
f
S
= 1 MSPS for the
AD4007,
and f
S
= 500 kSPS for
the
AD4011,
unless otherwise noted.
Table 1.
Parameter
RESOLUTION
ANALOG INPUT
Voltage Range
Test Conditions/Comments
Min
18
−V
REF
−V
REF
× 0.8
−0.1
0.1 × V
REF
V
REF
/2 − 0.125
Typ
Max
Unit
Bits
V
V
V
V
V
dB
nA
µA
Operating Input Voltage
Common-Mode Input Range
Common-Mode Rejection Ratio (CMRR)
Analog Input Current
IN+ voltage (V
IN+
) − IN− voltage
(V
IN−
)
Span compression enabled
V
IN+
, V
IN−
to GND
Span compression enabled
f
IN
= 500 kHz
Acquisition phase, T = 25°C
High-Z mode enabled, converting
dc input at 2 MSPS
+V
REF
+V
REF
× 0.8
V
REF
+ 0.1
0.9 × V
REF
V
REF
/2 + 0.125
V
REF
/2
68
0.3
1
THROUGHPUT
Complete Cycle
AD4003
AD4007
AD4011
Conversion Time
Acquisition Phase
1
AD4003
AD4007
AD4011
Throughput Rate
2
AD4003
AD4007
AD4011
Transient Response
3
DC ACCURACY
No Missing Codes
Integral Nonlinearity Error (INL)
Differential Nonlinearity Error (DNL)
Transition Noise
Zero Error
Zero Error Drift
4
Gain Error
Gain Error Drift
4
Power Supply Sensitivity
1/f Noise
5
500
1000
2000
270
290
790
1790
0
0
0
290
320
ns
ns
ns
ns
ns
ns
ns
2
1
500
250
MSPS
MSPS
kSPS
ns
Bits
LSB
ppm
LSB
LSB
LSB
ppm/°C
LSB
ppm/°C
LSB
µV p-p
18
−1.0
−3.8
−0.75
−7
−0.21
−26
−1.23
VDD = 1.8 V ± 5%
Bandwidth = 0.1 Hz to 10 Hz
±0.4
±1.52
±0.3
0.8
+1.0
+3.8
+0.75
+7
+0.21
+26
+1.23
±3
1.5
6
Rev. C | Page 4 of 38
Data Sheet
Parameter
AC ACCURACY
Dynamic Range
Total RMS Noise
f
IN
= 1 kHz, −0.5 dBFS, V
REF
= 5 V
Signal-to-Noise Ratio (SNR)
Spurious-Free Dynamic Range (SFDR)
Total Harmonic Distortion (THD)
Signal-to-Noise-and-Distortion Ratio
(SINAD)
Oversampled Dynamic Range
f
IN
= 1 kHz, −0.5 dBFS, V
REF
= 2.5 V
SNR
SFDR
THD
SINAD
f
IN
= 100 kHz, −0.5 dBFS, V
REF
= 5 V
SNR
THD
SINAD
f
IN
= 400 kHz, −0.5 dBFS, V
REF
= 5 V
SNR
THD
SINAD
−3 dB Input Bandwidth
Aperture Delay
Aperture Jitter
REFERENCE
Voltage Range, V
REF
Current
AD4003
AD4007
AD4011
INPUT OVERVOLTAGE CLAMP
IN+/IN− Current, I
IN+
/I
IN−
V
IN+
/V
IN−
at Maximum I
IN+
/I
IN−
V
IN+
/V
IN−
Clamp On/Off Threshold
Deactivation Time
REF Current at Maximum I
IN+
/I
IN−
DIGITAL INPUTS
Logic Levels
Input Low Voltage, V
IL
Input High Voltage, V
IH
Input Low Current, I
IL
Input High Current, I
IH
Input Pin Capacitance
Test Conditions/Comments
Min
AD4003/AD4007/AD4011
Typ
101
31.5
99
100.5
122
−123
100
122
Max
Unit
dB
µV rms
dB
dB
dB
dB
dB
98.5
Oversampling ratio (OSR) = 256,
V
REF
= 5 V
93.5
93
94.5
122
−119
94
99
−100
96.5
91.5
−94
90
10
1
1
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
MHz
ns
ps rms
5.1
V
mA
mA
mA
50
50
mA
mA
V
V
V
V
ns
µA
2.4
2 MSPS
1 MSPS
500 kSPS
V
REF
= 5 V
V
REF
= 2.5 V
V
REF
= 5 V
V
REF
= 2.5 V
V
REF
= 5 V
V
REF
= 2.5 V
V
IN+
/V
IN−
> V
REF
1.1
0.5
0.26
5.25
2.68
5.4
3.1
5.4
2.8
360
100
VIO > 2.7 V
VIO ≤ 2.7 V
VIO > 2.7 V
VIO ≤ 2.7 V
−0.3
−0.3
0.7 × VIO
0.8 × VIO
−1
−1
6
+0.3 × VIO
+0.2 × VIO
VIO + 0.3
VIO + 0.3
+1
+1
V
V
V
V
µA
µA
pF
Rev. C | Page 5 of 38
