Datasheet AD7693 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | 16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential A/D Converter in MSOP/QFN |
| Páginas / Página | 25 / 1 — 16-Bit, ±0.5 LSB, 500 kSPS PulSAR®. Differential ADC in MSOP/LFCSP. Data … |
| Revisión | C |
| Formato / tamaño de archivo | PDF / 750 Kb |
| Idioma del documento | Inglés |
16-Bit, ±0.5 LSB, 500 kSPS PulSAR®. Differential ADC in MSOP/LFCSP. Data Sheet. AD7693. FEATURES. APPLICATION DIAGRAM
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16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential ADC in MSOP/LFCSP Data Sheet AD7693 FEATURES APPLICATION DIAGRAM 16-bit resolution with no missing codes +2.5V TO +5V +5V Throughput: 500 kSPS INL/DNL: ±0.25 LSB typ, ±0.5 LSB max (±8 ppm of FSR) Dynamic range: 96.5 dB REF VDD VIO +1.8V TO VDD IN+ SINAD: 96 dB at 1 kHz SDI AD7693 SCK 3- OR 4-WIRE THD: −120 dB at 1 kHz ±10V, ±5V, ... INTERFACE IN– SDO (SPI, DAISY CHAIN, CS) GND True differential analog input range: ±V CNV
002
REF ADA4941-1 0 V to V
06394-
REF with VREF up to VDD on both inputs
Figure 2.
No pipeline delay Single-supply 5 V operation with Table 1. MSOP, LFCSP/SOT-23 1.8 V/2.5 V/3 V/5 V logic interface 14-/16-/18-Bit PulSAR ADC Proprietary serial interface 400 kSPS SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible1 100 250 to ADC Daisy-chain multiple ADCs, selectable busy indicator Type kSPS kSPS 500 kSPS Driver Power dissipation: 40 nJ/conversion
18-Bit AD7691 AD7690 ADA4941-1
40 µW at 5 V/1 kSPS
ADA4841-x
4 mW at 5 V/100 kSPS
16-Bit True AD7684 AD7687 AD7688 ADA4941-1
18 mW at 5 V/500 kSPS
Differential AD7693 ADA4841-x
Standby current: 1 nA
16-Bit Pseudo AD7683 AD7685 AD7686 ADA4841-x
10-lead package: MSOP (MSOP-8 size) and
Differential/ AD7680 AD7694 Unipolar
3 mm × 3 mm LFCSP (SOT-23 size)
14-Bit AD7940 AD7942 AD7946 ADA4841-x
Pin-for-pin compatible with the 16-bit AD7687 an d AD7688 and the 18-bit AD7690 a nd AD7691 GENERAL DESCRIPTION APPLICATIONS
The AD7693 is a 16-bit, successive approximation analog-to-
Battery-powered equipment
digital converter (ADC) that operates from a single power supply,
Data acquisitions
VDD. It contains a low power, high speed, 16-bit sampling ADC
Seismic data acquisition systems
with no missing codes, an internal conversion clock, and a
DVMs
versatile serial interface port. The reference voltage, VREF, is
Instrumentation
applied externally and can be set up to the supply voltage, VDD.
Medical instruments
On the CNV rising edge, it samples the voltage difference
1.0
between the IN+ and IN− pins. The voltages on these pins
POSITIVE INL = +0.17LSB NEGATIVE INL = –0.17LSB
swing in opposite phase between 0 V and V
0.8
REF about VREF/2.
0.6
Its power scales linearly with throughput.
0.4
Using the SDI input, the SPI-compatible serial interface also
) 0.2
features the ability to daisy-chain several ADCs on a single
B LS 0
3-wire bus and provides an optional busy indicator. It is compatible
L ( IN
with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply.
–0.2 –0.4
The AD7693 is housed in a 10-lead MSOP or a 10-lead LFCSP
–0.6
with operation specified from −40°C to +85°C.
–0.8
1 Protected by U.S. Patent 6,703,961.
–1.0 0 16384 32768 49152 65536
001
CODE
06394- Figure 1. Integral Nonlinearity vs. Code
Rev. B Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2006–2014 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specification Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Inputs Driver Amplifier Choice Single-Ended-to-Differential Driver Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface /CS Mode, 3-Wire Without Busy Indicator /CS Mode, 3-Wire with Busy Indicator /CS Mode, 4-Wire Without Busy Indicator /CS Mode, 4-Wire with Busy Indicator Chain Mode Without Busy Indicator Chain Mode with Busy Indicator Application Hints Layout Evaluating the AD7693 Performance Outline Dimensions Ordering Guide
16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential ADC in MSOP/LFCSP Data Sheet AD7693 FEATURES APPLICATION DIAGRAM 16-bit resolution with no missing codes +2.5V TO +5V +5V Throughput: 500 kSPS INL/DNL: ±0.25 LSB typ, ±0.5 LSB max (±8 ppm of FSR) Dynamic range: 96.5 dB REF VDD VIO +1.8V TO VDD IN+ SINAD: 96 dB at 1 kHz SDI AD7693 SCK 3- OR 4-WIRE THD: −120 dB at 1 kHz ±10V, ±5V, ... INTERFACE IN– SDO (SPI, DAISY CHAIN, CS) GND True differential analog input range: ±V CNV
002
REF ADA4941-1 0 V to V
06394-
REF with VREF up to VDD on both inputs
Figure 2.
No pipeline delay Single-supply 5 V operation with Table 1. MSOP, LFCSP/SOT-23 1.8 V/2.5 V/3 V/5 V logic interface 14-/16-/18-Bit PulSAR ADC Proprietary serial interface 400 kSPS SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible1 100 250 to ADC Daisy-chain multiple ADCs, selectable busy indicator Type kSPS kSPS 500 kSPS Driver Power dissipation: 40 nJ/conversion
18-Bit AD7691 AD7690 ADA4941-1
40 µW at 5 V/1 kSPS
ADA4841-x
4 mW at 5 V/100 kSPS
16-Bit True AD7684 AD7687 AD7688 ADA4941-1
18 mW at 5 V/500 kSPS
Differential AD7693 ADA4841-x
Standby current: 1 nA
16-Bit Pseudo AD7683 AD7685 AD7686 ADA4841-x
10-lead package: MSOP (MSOP-8 size) and
Differential/ AD7680 AD7694 Unipolar
3 mm × 3 mm LFCSP (SOT-23 size)
14-Bit AD7940 AD7942 AD7946 ADA4841-x
Pin-for-pin compatible with the 16-bit AD7687 an d AD7688 and the 18-bit AD7690 a nd AD7691 GENERAL DESCRIPTION APPLICATIONS
The AD7693 is a 16-bit, successive approximation analog-to-
Battery-powered equipment
digital converter (ADC) that operates from a single power supply,
Data acquisitions
VDD. It contains a low power, high speed, 16-bit sampling ADC
Seismic data acquisition systems
with no missing codes, an internal conversion clock, and a
DVMs
versatile serial interface port. The reference voltage, VREF, is
Instrumentation
applied externally and can be set up to the supply voltage, VDD.
Medical instruments
On the CNV rising edge, it samples the voltage difference
1.0
between the IN+ and IN− pins. The voltages on these pins
POSITIVE INL = +0.17LSB NEGATIVE INL = –0.17LSB
swing in opposite phase between 0 V and V
0.8
REF about VREF/2.
0.6
Its power scales linearly with throughput.
0.4
Using the SDI input, the SPI-compatible serial interface also
) 0.2
features the ability to daisy-chain several ADCs on a single
B LS 0
3-wire bus and provides an optional busy indicator. It is compatible
L ( IN
with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply.
–0.2 –0.4
The AD7693 is housed in a 10-lead MSOP or a 10-lead LFCSP
–0.6
with operation specified from −40°C to +85°C.
–0.8
1 Protected by U.S. Patent 6,703,961.
–1.0 0 16384 32768 49152 65536
001
CODE
06394- Figure 1. Integral Nonlinearity vs. Code
Rev. B Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2006–2014 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specification Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Inputs Driver Amplifier Choice Single-Ended-to-Differential Driver Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface /CS Mode, 3-Wire Without Busy Indicator /CS Mode, 3-Wire with Busy Indicator /CS Mode, 4-Wire Without Busy Indicator /CS Mode, 4-Wire with Busy Indicator Chain Mode Without Busy Indicator Chain Mode with Busy Indicator Application Hints Layout Evaluating the AD7693 Performance Outline Dimensions Ordering Guide