EVAL-AD7683SDZ Analog Devices, EVAL-AD7683SDZ Datasheet

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EVAL-AD7683SDZ

Manufacturer Part Number
EVAL-AD7683SDZ
Description
Data Conversion IC Development Tools EVAL BOARD 18BIT 100ksps I.C.
Manufacturer
Analog Devices
Type
ADCr
Series
AD7683r
Datasheet

Specifications of EVAL-AD7683SDZ

Rohs
yes
Product
Evaluation Boards
Tool Is For Evaluation Of
AD7683
Interface Type
SPI
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Factory Pack Quantity
1
FEATURES
16-bit resolution with no missing codes
Throughput: 100 kSPS
INL: ±1 LSB typical, ±3 LSB maximum
Pseudo differential analog input range
0 V to V
Single-supply operation: 2.7 V to 5.5 V
Serial interface SPI/QSPI/MICROWIRE/DSP compatible
Power dissipation: 4 mW @ 5 V, 1.5 mW @ 2.7 V,
Standby current: 1 nA
8-lead packages:
Improved second source to ADS8320 and ADS8325
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process control
GENERAL DESCRIPTION
The AD7683 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
and 5.5 V. It contains a low power, high speed, 16-bit sampling
ADC with no missing codes (B grade), an internal conversion
clock, and a serial, SPI-compatible interface port. The part also
contains a low noise, wide bandwidth, short aperture delay,
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.
150 μW @ 2.7 V/10 kSPS
MSOP
3 mm × 3 mm QFN (LFCSP) (SOT-23 size)
REF
with V
REF
up to VDD
16-Bit, 100 kSPS, Single-Ended
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
14-Bit Pseudo
track-and-hold circuit. On the CS falling edge, it samples an
analog input, +IN, between 0 V to REF with respect to a ground
sense, –IN. The reference voltage, REF, is applied externally and
can be set up to the supply voltage. Its power scales linearly with
throughput.
The AD7683 is housed in an 8-lead MSOP or an 8-lead QFN
(LFCSP) package, with an operating temperature specified from
−40°C to +85°C.
Differential
Differential
Differential
Differential
0V TO V
PulSAR ADC in MSOP/QFN
REF
100
kSPS
AD7684
AD7680
AD7683
AD7940
APPLICATION DIAGRAM
©2004–2008 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
REF
AD7683
Figure 1.
VDD
DCLOCK
400 kSPS
to
500 kSPS
AD7690
AD7688
AD7693
AD7686
AD7946
D
OUT
CS
≥1000
kSPS
AD7982
AD7984
AD7980
AD7683
www.analog.com
3-WIRE SPI
INTERFACE
ADC
Driver
ADA4941
ADA4841
ADA4941
ADA4841
ADA4841
ADA4841

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EVAL-AD7683SDZ Summary of contents

Page 1

... 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. ...

Page 2

... Analog Input ............................................................................... 13   Driver Amplifier Choice ........................................................... 13   Voltage Reference Input ............................................................ 14   Power Supply ............................................................................... 14   Digital Interface .......................................................................... 14   Layout .......................................................................................... 14   Evaluating the AD7683 Performance ...................................... 14   Outline Dimensions ....................................................................... 15   Ordering Guide .......................................................................... 16   Rev Page               ...

Page 3

SPECIFICATIONS VDD = 2 5 VDD; T REF A Table 2. Parameter Conditions RESOLUTION ANALOG INPUT Voltage Range +IN − (–IN) Absolute Input Voltage +IN −IN Analog Input CMRR f Leakage Current at 25°C Acquisition ...

Page 4

AD7683 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 Gain Error MIN MAX ...

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

AD7683 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 8. Pin Function Descriptions 1 Pin No. Mnemonic Type Function 1 REF AI Reference Input Voltage. The REF range is from 0 VDD referred to the GND pin. Decouple the ...

Page 8

AD7683 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 = +0.43LSB NEGATIVE INL = –0.97LSB –1 –2 –3 0 16384 32768 CODE Figure 7. Integral Nonlinearity vs. Code 7000 62564 6000 5000 4000 35528 3000 25440 2000 1000 2755 50 ...

Page 10

AD7683 100 95 SNR 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 REF 100 FREQUENCY (kHz) Figure ...

Page 11

VDD = 5V, = 100kSPS S 800 700 600 VDD = 2.7V, 500 400 300 200 100 0 –55 –34 – TEMPERATURE (°C) Figure 17. Operating Current vs. Temperature 1000 750 500 250 0 ...

Page 12

AD7683 APPLICATIONS INFORMATION +IN REF GND –IN CIRCUIT INFORMATION The AD7683 is a low power, single-supply, 16-bit ADC using a successive approximation architecture. The AD7683 is capable of converting 100,000 samples per second (100 kSPS) and powers down between conversions. ...

Page 13

TO V REF (NOTE 3) NOTES 1. SEE VOLTAGE REFERENCE INPUT SECTION FOR REFERENCE SELECTION USUALLY A 10µF CERAMIC CAPACITOR (X5R). REF 3. SEE DRIVER AMPLIFIER CHOICE SECTION. 4. OPTIONAL FILTER. SEE ANALOG INPUT SECTION. TYPICAL ...

Page 14

... ADSP-BF53x EVALUATING THE AD7683 PERFORMANCE Other recommended layouts for the AD7683 are outlined in the evaluation board for the AD7683 (EVAL-AD7683CBZ). The evaluation board package includes a fully assembled and tested is enabled and forced evaluation board, documentation, and software for controlling OUT the board from a PC via the Rev ...

Page 15

OUTLINE DIMENSIONS PIN 1 INDEX AREA 0.80 0.75 0.70 SEATING PLANE 3.20 3.00 2.80 5. 3.20 4.90 3.00 4.65 2. PIN 1 0.65 BSC 0.95 0.85 1.10 MAX 0.75 8° 0.15 0.38 0.23 0° 0.00 0.22 ...

Page 16

... EVAL-CONTROL BRD3Z 1 Z= RoHS Compliant Part. 2 This board allows control and communicate with all Analog Devices evaluation boards ending in the CB designators. ©2004–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Temperature ...

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