Datasheet AD7667 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | 16-Bit, 1 MSPS PulSAR® Unipolar ADC with Ref |
| Páginas / Página | 29 / 1 — 16-Bit 1 MSPS PulSAR®. Unipolar ADC with Reference. AD7667. FEATURES. … |
| Formato / tamaño de archivo | PDF / 566 Kb |
| Idioma del documento | Inglés |
16-Bit 1 MSPS PulSAR®. Unipolar ADC with Reference. AD7667. FEATURES. FUNCTIONAL BLOCK DIAGRAM
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16-Bit 1 MSPS PulSAR® Unipolar ADC with Reference AD7667 FEATURES FUNCTIONAL BLOCK DIAGRAM 2.5 V internal reference: typical drift 3 ppm/°C REFBUFIN REF REFGND DVDD DGND Guaranteed max drift 15 ppm/°C AGND OVDD Throughput: AD7667 AVDD 1 MSPS (Warp mode) SERIAL OGND REF PORT 800 kSPS (Normal mode) 16 IN 666 kSPS (Impulse mode) SWITCHED DATA[15:0] CAP DAC INGND INL: ±2.0 LSB max (±0.0038% of full scale) BUSY PARALLEL 16-bit resolution with no missing codes PDREF INTERFACE RD PDBUF CLOCK S/(N+D): 88 dB min @ 20 kHz CS PD THD: –96 dB max @ 20 kHz CONTROL LOGIC AND SER/PAR RESET CALIBRATION CIRCUITRY Analog input voltage range: 0 V to 2.5 V OB/2C
001
No pipeline delay BYTESWAP
0-
Parallel and serial 5 V/3 V interface
03035-
WARP IMPULSE CNVST SPI®/QSPITM/MICROWIRETM/DSP compatible
Figure 1.
Single 5 V supply operation Power dissipation Table 1. PulSAR Selection 87 mW typ @ 666 kSPS, 130 µW @ 1 kSPS without REF 800– Type/kSPS 100–250 500–570 1000 133 mW typ @1 MSPS with REF
Pseudo- AD7651 AD7650/AD7652 AD7653
48-lead LQFP and 48-lead LFCSP packages
Differential AD7660/AD7661 AD7664/AD7666 AD7667
Pin-to-pin compatible with AD7671, AD7677
True Bipolar AD7663 AD7665 AD7671 True AD7675 AD7676 AD7677
APPLICATIONS
Differential
Data acquisition
18-Bit AD7678 AD7679 AD7674
Medical instruments
Multichannel/ AD7654
Digital signal processing
Simultaneous AD7655
Battery-powered systems Process control PRODUCT HIGHLIGHTS
1. Fast Throughput.
GENERAL DESCRIPTION
The AD7667 is a 1 MSPS, charge redistribution, 16-bit SAR The AD7667 is a 16-bit, 1 MSPS, charge redistribution SAR ADC with internal error correction circuitry. analog-to-digital converter that operates from a single 5 V 2. Superior INL. power supply. The part contains a high speed 16-bit sampling The AD7667 has a maximum integral nonlinearity of ADC, an internal conversion clock, internal reference, error 2.0 LSBs with no missing 16-bit codes. correction circuits, and both serial and parallel system inter- 3. Internal Reference. face ports. It features a very high sampling rate mode (Warp), a The AD7667 has an internal reference with a typical fast mode (Normal) for asynchronous applications, and a temperature drift of 3 ppm/°C. reduced power mode (Impulse) for low power applications where power is scaled with the throughput. The AD7667 is 4. Single-Supply Operation. hardware factory-calibrated and comprehensively tested to The AD7667 operates from a single 5 V supply. In Impulse ensure ac parameters such as signal-to-noise ratio (SNR) and mode, its power dissipation decreases with throughput. total harmonic distortion (THD) in addition to the more 5. Serial or Parallel Interface. traditional dc parameters of gain, offset, and linearity. Operation Versatile parallel or 2-wire serial interface arrangement is is specified from –40°C to +85°C. compatible with both 3 V and 5 V logic.
Rev. 0 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. or otherwise under any patent or patent rights of Analog Devices. Trademarks and Tel: 781.329.4700 www.analog.com registered trademarks are the property of their respective owners. Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS DEFINITIONS OF SPECIFICATIONS TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION Modes Of Operation Transfer Functions TYPICAL CONNECTION DIAGRAM Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply POWER DISSIPATION VERSUS THROUGHPUT CONVERSION CONTROL DIGITAL INTERFACE PARALLEL INTERFACE SERIAL INTERFACE MASTER SERIAL INTERFACE Internal Clock SLAVE SERIAL INTERFACE External Clock External Discontinuous Clock Data Read After Conversion External Clock Data Read During Conversion MICROPROCESSOR INTERFACING SPI Interface (ADSP-219x) APPLICATION HINTS BIPOLAR AND WIDER INPUT RANGES LAYOUT EVALUATING THE AD7667’S PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
16-Bit 1 MSPS PulSAR® Unipolar ADC with Reference AD7667 FEATURES FUNCTIONAL BLOCK DIAGRAM 2.5 V internal reference: typical drift 3 ppm/°C REFBUFIN REF REFGND DVDD DGND Guaranteed max drift 15 ppm/°C AGND OVDD Throughput: AD7667 AVDD 1 MSPS (Warp mode) SERIAL OGND REF PORT 800 kSPS (Normal mode) 16 IN 666 kSPS (Impulse mode) SWITCHED DATA[15:0] CAP DAC INGND INL: ±2.0 LSB max (±0.0038% of full scale) BUSY PARALLEL 16-bit resolution with no missing codes PDREF INTERFACE RD PDBUF CLOCK S/(N+D): 88 dB min @ 20 kHz CS PD THD: –96 dB max @ 20 kHz CONTROL LOGIC AND SER/PAR RESET CALIBRATION CIRCUITRY Analog input voltage range: 0 V to 2.5 V OB/2C
001
No pipeline delay BYTESWAP
0-
Parallel and serial 5 V/3 V interface
03035-
WARP IMPULSE CNVST SPI®/QSPITM/MICROWIRETM/DSP compatible
Figure 1.
Single 5 V supply operation Power dissipation Table 1. PulSAR Selection 87 mW typ @ 666 kSPS, 130 µW @ 1 kSPS without REF 800– Type/kSPS 100–250 500–570 1000 133 mW typ @1 MSPS with REF
Pseudo- AD7651 AD7650/AD7652 AD7653
48-lead LQFP and 48-lead LFCSP packages
Differential AD7660/AD7661 AD7664/AD7666 AD7667
Pin-to-pin compatible with AD7671, AD7677
True Bipolar AD7663 AD7665 AD7671 True AD7675 AD7676 AD7677
APPLICATIONS
Differential
Data acquisition
18-Bit AD7678 AD7679 AD7674
Medical instruments
Multichannel/ AD7654
Digital signal processing
Simultaneous AD7655
Battery-powered systems Process control PRODUCT HIGHLIGHTS
1. Fast Throughput.
GENERAL DESCRIPTION
The AD7667 is a 1 MSPS, charge redistribution, 16-bit SAR The AD7667 is a 16-bit, 1 MSPS, charge redistribution SAR ADC with internal error correction circuitry. analog-to-digital converter that operates from a single 5 V 2. Superior INL. power supply. The part contains a high speed 16-bit sampling The AD7667 has a maximum integral nonlinearity of ADC, an internal conversion clock, internal reference, error 2.0 LSBs with no missing 16-bit codes. correction circuits, and both serial and parallel system inter- 3. Internal Reference. face ports. It features a very high sampling rate mode (Warp), a The AD7667 has an internal reference with a typical fast mode (Normal) for asynchronous applications, and a temperature drift of 3 ppm/°C. reduced power mode (Impulse) for low power applications where power is scaled with the throughput. The AD7667 is 4. Single-Supply Operation. hardware factory-calibrated and comprehensively tested to The AD7667 operates from a single 5 V supply. In Impulse ensure ac parameters such as signal-to-noise ratio (SNR) and mode, its power dissipation decreases with throughput. total harmonic distortion (THD) in addition to the more 5. Serial or Parallel Interface. traditional dc parameters of gain, offset, and linearity. Operation Versatile parallel or 2-wire serial interface arrangement is is specified from –40°C to +85°C. compatible with both 3 V and 5 V logic.
Rev. 0 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. or otherwise under any patent or patent rights of Analog Devices. Trademarks and Tel: 781.329.4700 www.analog.com registered trademarks are the property of their respective owners. Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS DEFINITIONS OF SPECIFICATIONS TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION Modes Of Operation Transfer Functions TYPICAL CONNECTION DIAGRAM Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply POWER DISSIPATION VERSUS THROUGHPUT CONVERSION CONTROL DIGITAL INTERFACE PARALLEL INTERFACE SERIAL INTERFACE MASTER SERIAL INTERFACE Internal Clock SLAVE SERIAL INTERFACE External Clock External Discontinuous Clock Data Read After Conversion External Clock Data Read During Conversion MICROPROCESSOR INTERFACING SPI Interface (ADSP-219x) APPLICATION HINTS BIPOLAR AND WIDER INPUT RANGES LAYOUT EVALUATING THE AD7667’S PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE