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AD4001BRMZ-RL7 bảng dữ liệu(PDF) 1 Page - Analog Devices

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16-Bit, 2 MSPS,
Precision SAR, Differential ADC
Data Sheet
AD4001
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
Throughput: 2 MSPS maximum
INL: ±0.4 LSB maximum
Guaranteed 16-bit no missing codes
Low power
9.5 mW at 2 MSPS (VDD only)
80 μW at 10 kSPS
16 mW at 2 MSPS (total)
SNR
96.2 dB typical at 1 kHz
95.5 dB typical at 100 kHz
THD
−123 dB typical at 1 kHz
−99 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 between 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
Guaranteed operation: −40°C to 125°C
Serial interface SPI-/QSPI-/MICROWIRE-/DSP-compatible
Ability to daisy-chain multiple ADCs and busy indicator
10-lead, 3 mm × 3 mm LFCSP and 10-lead, 3 mm × 4.90 mm MSOP
APPLICATIONS
Automatic test equipment
Machine automation
Medical equipment
Battery-powered equipment
Precision data acquisition systems
GENERAL DESCRIPTION
The AD4001 is a low noise, low power, high speed, 16-bit, 2 MSPS,
precision successive approximation register (SAR) analog-to-
digital converter (ADC). It incorporates ease of use features that
lower the signal chain power, 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 this ADC 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 AD4001 has a ±VREF fully
differential input range with VREF ranging from 2.4 V to 5.1 V.
The AD4001 consumes only 16 mW at 2 MSPS with a minimum
SCK rate of 70 MHz in turbo mode and achieves ±0.4 LSB
integral nonlinearity error (INL) maximum, guaranteed no
missing codes at 16 bits with 96.2 dB typical signal-to-noise ratio
(SNR). 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 AD4001 is compatible with 1.8 V,
2.5 V, 3 V, and 5 V logic, using the separate VIO supply.
The AD4001 is available in a 10-lead MSOP or a 10-lead LFCSP
with operation specified from −40°C to +125°C. The device is
pin compatible with the AD4003 18-bit, 2 MSPS, precision SAR
differential ADC.
FUNCTIONAL BLOCK DIAGRAM
GND
IN+
IN–
SDI
SCK
SDO
CNV
AD4001
16-BIT
SAR ADC
SERIAL
INTERFACE
VIO
REF
VDD
VREF
0
VREF
0
VREF/2
VREF/2
HIGH-Z
MODE
CLAMP
SPAN
COMPRESSION
TURBO
MODE
STATUS
BITS
2.5V TO 5V
1.8V
10µF
1.8V TO 5V
3-WIRE OR 4-WIRE
SPI INTERFACE
(DAISY CHAIN, CS)
Figure 1.


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Analog Devices
AD4001BRMZ-RL7 AD-AD4001BRMZ-RL7 Datasheet
905Kb / 37P
   Precision, Differential SAR ADCs
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Mô tả tương tự - AD4001BRMZ-RL7

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