AD7684BRM Analog Devices Inc, AD7684BRM Datasheet

IC ADC 16BIT 100KSPS DIFF 8MSOP

AD7684BRM

Manufacturer Part Number
AD7684BRM
Description
IC ADC 16BIT 100KSPS DIFF 8MSOP
Manufacturer
Analog Devices Inc
Series
PulSAR®r
Datasheet

Specifications of AD7684BRM

Number Of Bits
16
Sampling Rate (per Second)
100k
Data Interface
DSP, MICROWIRE™, QSPI™, Serial, SPI™
Number Of Converters
1
Power Dissipation (max)
6mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
For Use With
EVAL-AD7684CBZ - BOARD EVALUATION FOR AD7684
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD7684BRMZ
Manufacturer:
Analog Devices Inc
Quantity:
1 956
Part Number:
AD7684BRMZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD7684BRMZ-REEL
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD7684BRMZ-RL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD7684BRMZRL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
16-bit resolution with no missing codes
Throughput: 100 kSPS
INL: ±1 LSB typical, ±3 LSB maximum
True differential analog input range: ±V
Single-supply operation: 2.7 V to 5.5 V
Serial interface SPI®-/QSPI-™/MICROWIRE-™/DSP-compatible
Power dissipation
Standby current: 1 nA
8-lead MSOP package
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process control
GENERAL DESCRIPTION
The AD7684 is a 16-bit, charge redistribution, successive
approximation, PulSAR® analog-to-digital converter (ADC)
that operates from a single power supply, VDD, between 2.7 V
to 5.5 V. It contains a low power, high speed, 16-bit sampling
ADC with no missing codes, an internal conversion clock, and a
serial, SPI-compatible interface port. The part also contains a low
noise, wide bandwidth, short aperture delay, track-and-hold circuit.
Rev. A
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 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.
0 V to V
4 mW @ 5 V
1.5 mW @ 2.7 V
150 μW @ 2.7 V/10 kSPS
REF
with V
REF
up to VDD on both inputs
REF
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Table 1. MSOP, QFN (LFCSP)/SOT-23
14-/16-/18-Bit PulSAR ADC
Type
18-Bit True
16-Bit True
16-Bit Pseudo
Differential
14-Bit Pseudo
On the CS falling edge, it samples the voltage difference
between +IN and –IN pins. The reference voltage, REF, is
applied externally and can be set up to the supply voltage. Its
power scales linearly with throughput.
The AD7684 is housed in an 8-lead MSOP, with an operating
temperature specified from −40°C to +85°C.
Differential
Differential
Differential
V
V
REF
REF
0
0
16-Bit, 100 kSPS PulSAR,
Differential ADC in MSOP
100
kSPS
AD7684
AD7680
AD7683
AD7940
APPLICATION DIAGRAM
©2004–2007 Analog Devices, Inc. All rights reserved.
+IN
–IN
0.5V TO VDD 2.7V TO 5.5V
250
kSPS
AD7691
AD7687
AD7685
AD7694
AD7942
GND
Figure 1.
REF
AD7684
400 kSPS
to
500 kSPS
AD7690
AD7688
AD7693
AD7686
AD7946
VDD
DCLOCK
D
OUT
CS
≥ 1000
kSPS
AD7982
AD7984
AD7980
AD7684
www.analog.com
3-WIRE SPI
INTERFACE
ADC
Driver
ADA4941
ADA4841
ADA4941
ADA4841
ADA4841
ADA4841

Related parts for AD7684BRM

AD7684BRM Summary of contents

Page 1

FEATURES 16-bit resolution with no missing codes Throughput: 100 kSPS INL: ±1 LSB typical, ±3 LSB maximum True differential analog input range: ± with VDD on both inputs REF REF Single-supply operation: 2.7 ...

Page 2

AD7684 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Application Diagram........................................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications .................................................................. 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Terminology ...

Page 3

SPECIFICATIONS VDD = 2 5 VDD; T REF A Table 2. Parameter Conditions RESOLUTION ANALOG INPUT 1 Voltage Range +IN − (−IN) Absolute Input Voltage +IN, −IN Common-Mode Input Range +IN, −IN Analog Input CMRR ...

Page 4

AD7684 VDD = VDD −40°C to +85°C, unless otherwise noted. REF A Table 3. Parameter Conditions ACCURACY No Missing Codes Integral Linearity Error Transition Noise 1 Gain Error MIN MAX Gain ...

Page 5

TIMING SPECIFICATIONS VDD = 2 5 −40°C to +85°C, unless otherwise noted. A Table 5. Parameter Throughput Rate CS Falling to DCLOCK Low CS Falling to DCLOCK Rising DCLOCK Falling to Data Remains Valid CS ...

Page 6

AD7684 ABSOLUTE MAXIMUM RATINGS Table 6. Parameter Rating Analog Inputs 1 1 +IN , −IN GND − 0 VDD + 0 ±130 mA REF GND − 0 VDD + 0.3 V Supply Voltages VDD ...

Page 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 7. Pin Function Descriptions 1 Pin No. Mnemonic Type Description 1 REF AI Reference Input Voltage. The REF range is from 0 VDD. This pin is referred to the GND pin and ...

Page 8

AD7684 TERMINOLOGY Integral Nonlinearity Error (INL) Linearity error refers to the deviation of each individual code from a line drawn from negative full scale through positive full scale. The point used as negative full scale occurs ½ LSB before the ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 3 POSITIVE INL = +0.83LSB NEGATIVE INL = –1.07LSB –1 –2 –3 0 16384 32768 CODE Figure 7. Integral Nonlinearity vs. Code 120000 94794 100000 80000 60000 40000 18557 17388 20000 0 0 151 ...

Page 10

AD7684 100 95 S/[N+D] 90 ENOB 85 80 2.0 2.5 3.0 3.5 4.0 REFERENCE VOLTAGE (V) Figure 13. SNR, SINAD, and ENOB vs. Reference Voltage 100 VREF = 5V, –10dB 95 VREF = 5V, –1dB 90 VREF = 2.5V, –1dB ...

Page 11

ZERO ERROR 1 0 –1 –2 GAIN ERROR –3 –4 –5 –6 –55 –35 – TEMPERATURE (°C) Figure 19. Zero Error and Gain Error vs. Temperature 85 105 125 Rev. A ...

Page 12

AD7684 APPLICATION INFORMATION +IN REF GND –IN CIRCUIT INFORMATION The AD7684 is a low power, single-supply, 16-bit ADC using a successive approximation architecture capable of converting 100,000 samples per second (100 kSPS) and powers down between conversions. When ...

Page 13

TO V REF (NOTE REF (NOTE 3) NOTE 1: SEE VOLTAGE REFERENCE INPUT SECTION FOR REFERENCE SELECTION. NOTE USUALLY A 10μF CERAMIC CAPACITOR (X5R). REF NOTE 3: SEE DRIVER AMPLIFIER CHOICE SECTION. ...

Page 14

AD7684 Table 9. Recommended Driver Amplifiers Amplifier Typical Application ADA4841-x Very low noise ADA4941-1 Very low noise, single to differential AD8021 Very low noise and high frequency AD8022 Low noise and high frequency OP184 Low power, low noise, and low ...

Page 15

... Nonlinearity AD7684BRM ±3 LSB maximum AD7684BRMRL7 ±3 LSB maximum AD7684BRMZ 1 ±3 LSB maximum 1 AD7684BRMZRL7 ±3 LSB maximum 1, 2 EVAL-AD7684CBZ 1, 3 EVAL-CONTROL BRD3Z RoHS Compliant Part. 2 This board can be used as a standalone evaluation board or in conjunction with the EVAL-CONTROL BRDx for evaluation/demonstration purposes. ...

Page 16

AD7684 NOTES ©2004–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04302-0-10/07(A) Rev Page ...

Related keywords