EVAL-AD7656CBZ Analog Devices, EVAL-AD7656CBZ Datasheet
EVAL-AD7656CBZ
Specifications of EVAL-AD7656CBZ
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EVAL-AD7656CBZ Summary of contents
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... Rev. D 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. ...
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AD7656/AD7657/AD7658 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 AD7656 .......................................................................................... 3 AD7657 .......................................................................................... 5 AD7658 .......................................................................................... 7 Timing ...
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Data Sheet SPECIFICATIONS AD7656 V = 2.5 V internal/external 4. 5. REF CC For ±4 × V range 16 REF 250 kSPS ...
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AD7656/AD7657/AD7658 Parameter LOGIC INPUTS Input High Voltage (V ) INH Input Low Voltage (V ) INL Input Current ( Input Capacitance ( LOGIC OUTPUTS Output High Voltage ( Output Low Voltage (V ) ...
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Data Sheet AD7657 V = 2.5 V internal/external 4. 5. REF CC For ±4 × V range 16 REF 250 kSPS ...
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AD7656/AD7657/AD7658 Parameter LOGIC OUTPUTS Output High Voltage ( Output Low Voltage ( Floating-State Leakage Current Floating-State Output Capacitance 3 Output Coding CONVERSION RATE Conversion Time Track-and-Hold Acquisition Time 2, 3 Throughput Rate POWER REQUIREMENTS V DD ...
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Data Sheet AD7658 V = 2.5 V internal/external 4. 5. REF CC For ±4 × V range 16 REF 250 kSPS ...
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AD7656/AD7657/AD7658 Parameter LOGIC OUTPUTS Output High Voltage ( Output Low Voltage ( Floating-State Leakage Current Floating-State Output Capacitance 3 Output Coding CONVERSION RATE Conversion Time Track-and-Hold Acquisition Time 2, 3 Throughput Rate POWER REQUIREMENTS V DD ...
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Data Sheet TIMING SPECIFICATIONS AV / unless otherwise noted. A MIN MAX Table 4. Limit at T ...
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AD7656/AD7657/AD7658 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 5. Parameter V to AGND, DGND AGND, DGND AGND, DGND ...
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Data Sheet PIN CONFIGURATION AND FUNCTION DESCRIPTIONS DB14/REFBUF DB10/DOUT C DB9/DOUT B DB8/DOUT A DB7/HBEN/DCEN DB5/DCIN A DB4/DCIN B DB3/DCIN C DB2/SEL C DB1/SEL B Table 7. Pin Function Descriptions Pin No. Mnemonic 54, 56, 58 REFCAPA, REFCAPB, REFCAPC 33, ...
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AD7656/AD7657/AD7658 Pin No. Mnemonic WR/REF EN/ DIS 18 BUSY 51 REFIN/REFOUT 61 SER/PAR/SEL 17 DB0/SEL A 16 DB1/SEL B 15 DB2/SEL C 14 DB3/DCIN C 13 DB4/DCIN B 12 DB5/DCIN A 11 DB6/SCLK 10 DB7/HBEN/DCEN ...
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Data Sheet Pin No. Mnemonic 7 DB8/DOUT A 6 DB9/DOUT B 5 DB10/DOUT C 4 DB11 DB12, DB13, DB15 1 DB14/REFBUF EN /DIS 28 RESET 27 RANGE STBY 62 H/S ...
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AD7656/AD7657/AD7658 TYPICAL PERFORMANCE CHARACTERISTICS –20 INTERNAL REFERENCE ±10V RANGE T – –60 SNR = +87.33dB SINAD = +87.251dB THD = –104.32dB –80 SFDR = –104.13dB –100 –120 –140 –160 FREQUENCY (kHz) ...
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Data Sheet 1 0.6 SAMPLE 2 × V 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 500 1000 1500 2000 2500 CODE Figure 10. AD7658 Typical INL 1 0.6 ...
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AD7656/AD7657/AD7658 2.510 DRIVE ±12V DD SS 2.508 2.506 2.504 2.502 2.500 2.498 2.496 2.494 2.492 –55 –35 – TEMPERATURE (°C) Figure 16. Reference Voltage vs. Temperature 3.20 ...
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Data Sheet 120 110 100 / DRIVE ±12V 25° INTERNAL REFERENCE ±2 × V RANGE REF 30kHz ON SELECTED CHANNEL ...
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AD7656/AD7657/AD7658 TERMINOLOGY Integral Nonlinearity The maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The endpoints of the transfer function are zero scale, a ½ LSB below the first code transition and full scale ...
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Data Sheet Figure 19 shows the power supply rejection ratio vs. supply ripple frequency for the AD7656/AD7657/AD7658. The power supply rejection ratio is defined as the ratio of the power in the ADC output at full-scale frequency the ...
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AD7656/AD7657/AD7658 THEORY OF OPERATION CONVERTER DETAILS The AD7656/AD7657/AD7658 are high speed, low power converters that allow the simultaneous sampling of six on-chip ADCs. The analog inputs on the AD7656/AD7657/AD7658 can accept true bipolar input signals. The RANGE pin/RNG bits are ...
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Data Sheet ADC TRANSFER FUNCTION The output coding of the AD7656/AD7657/AD7658 is twos complement. The designed code transitions occur midway between successive integer LSB values, that is, 1/2 LSB, 3/2 LSB. The LSB size is FSR/65536 for the AD7656, FSR/16384 ...
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AD7656/AD7657/AD7658 SUPPLY VOLTAGE 5V 2 +9.5V TO +16.5V SUPPLY 10µF 10µF 2.5V REF 10µF SIX ANALOG 2 –9.5V TO –16.5V SUPPLY 10µF 1 DECOUPLING SHOWN ON THE AV 2 SEE POWER SUPPLY CONFIGURATION SECTION. The ...
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Data Sheet The CS signal can be permanently tied low, and the RD signal can be used to access the conversion results. A read operation can take place after the BUSY signal goes low. The number of required read operations ...
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AD7656/AD7657/AD7658 Software Selection of ADCs The H /S SEL pin determines the source of the combination of ADCs that are to be simultaneously sampled. When the H /S SEL pin is logic low, the combination of channels to be simultaneously ...
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Data Sheet Changing the Analog Input Range ( H /S SEL = 0) The AD7656/AD7657/AD7658 RANGE pin allows the user to select either ±2 × ±4 × the analog input range for REF REF the six ...
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AD7656/AD7657/AD7658 CONVST A, CONVST B, CONVST C BUSY CS SCLK DOUT A DOUT B DOUT C CS SCLK DOUT A DOUT CONVST A, CONVST B, t CONVERT CONVST C t BUSY ACQUISITION CONVERSION CS SCLK DOUT A, ...
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Data Sheet Daisy-Chain Mode (DCEN = 1, SER/ PAR = 1) When reading conversion data back from the AD7656/AD7657/ AD7658 using their three/two/one DOUT pins possible to configure the parts to operate in daisy-chain mode, using the DCEN ...
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AD7656/AD7657/AD7658 CONVST AD7656/AD7657/AD7658 SCLK DCEN = 0 DEVICE 2 CONVST A, CONVST B, CONVST C BUSY SCLK DEVICE 1, DOUT A MSB V1 DEVICE 1, DOUT B MSB V3 DEVICE 2, DOUT A MSB V1 DEVICE ...
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Data Sheet APPLICATION HINTS LAYOUT The printed circuit board that houses the AD7656/AD7657/ AD7658 should be designed so that the analog and digital sections are separated and confined to certain areas of the board. At least one ground plane should ...
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... AD7658BSTZ-REEL −40°C to +85°C AD7658YSTZ −40°C to +125°C AD7658YSTZ-REEL −40°C to +125°C EVAL-AD7656CBZ EVAL-AD7657CBZ EVAL-AD7658CBZ EVAL-CONTROL BRD2Z RoHS Compliant Part. 2 The EVAL-CONTROL BRD2Z is a complete unit allowing control and communicate with all Analog Devices evaluation boards ending in the CB designators. To order a complete evaluation kit, the particular ADC evaluation board, for example, EVAL-AD7656/AD7657/AD7658CBZ, the EVAL-CONTROL BRD2Z and transformer must be ordered ...
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Data Sheet NOTES AD7656/AD7657/AD7658 Rev Page ...
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... AD7656/AD7657/AD7658 NOTES ©2006–2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05020-0-3/12(D) Rev Page Data Sheet ...