AD7610 Analog Devices, AD7610 Datasheet
AD7610
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AD7610 Summary of contents
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... A falling edge on CNVST samples the analog input on IN+ with respect to a ground sense, IN−. The AD7610 features four different analog input ranges ±5 V, and ±10 V. Power consumption is scaled linearly with throughput. The device is available in Pb-free 48-lead, low- profile quad flat package (LQFP) and a lead frame chip-scale (LFCSP_VQ) package. Operation is specified from − ...
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... AD7610 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications .................................................................. 5 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 Typical Performance Characteristics ........................................... 11 Terminology .................................................................................... 15 Theory of Operation ...................................................................... 16 Overview...................................................................................... 16 Converter Operation.................................................................. 16 Transfer Functions...................................................................... 17 Typical Connection Diagram ................................................... 18 Analog Inputs.............................................................................. 19 REVISION HISTORY 10/06— ...
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... Full-scale step PDREF = PDBUF = low REF @ 25°C –40°C to +85°C AVDD = 5 V ± 5% 1000 hours μF REF PDREF = high Rev Page AD7610 unless otherwise noted. MIN MAX Min Typ Max 16 −0.1 +5.1 −0.1 +10.1 −5.1 +5.1 − ...
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... AD7610 Parameter EXTERNAL REFERENCE Voltage Range Current Drain TEMPERATURE PIN Voltage Output Temperature Sensitivity Output Resistance DIGITAL INPUTS Logic Levels DIGITAL OUTPUTS Data Format 5 Pipeline Delay POWER SUPPLIES Specified Performance AVDD DVDD OVDD VCC VEE ...
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... Figure 42 pF; otherwise, the load maximum. L Rev Page AD7610 unless otherwise noted. MIN MAX Min Typ Max 1. 1.45 380 10 1. 560 ...
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... AD7610 Table 4. Serial Clock Timings in Master Read After Convert Mode DIVSCLK[1] DIVSCLK[0] SYNC to SDCLK First Edge Delay Minimum Internal SDCLK Period Minimum Internal SDCLK Period Maximum Internal SDCLK High Minimum Internal SDCLK Low Minimum SDOUT Valid Setup Time Minimum SDOUT Valid Hold Time Minimum ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ESD CAUTION = 91°C/ 26°C/W. JA Rev Page AD7610 ...
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... Serial Data Clock Source Select. In serial mode, this input is used to select the internally generated (master) or EXT/INT external (slave) serial data clock for the AD7610 output data. When EXT/INT = low, master mode; the internal serial data clock is selected on SDCLK output. When EXT/INT = high, slave mode; the output data is synchronized to an external clock signal (gated by CS) connected to the SDCLK input ...
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... D12 or DI/O In parallel mode, this output is used as Bit 12 of the parallel port data output bus. Serial Configuration Hardware/Software Select. In serial mode, this input is used to configure the AD7610 by HW/SW hardware or software. See the When HW/SW = low, the AD7610 is configured through software using the serial configuration register. ...
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... RESET DI Reset Input. When high, reset the AD7610. Current conversion, if any, is aborted. The falling edge of RESET resets the data outputs to all zero’s (with OB/2C = high) and clears the configuration register. See the Interface 2 ...
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... DNL DISTRIBUTION (LSB) Figure 9. Differential Nonlinearity Distribution (296 Devices) 132700 127179 1072 0 0 169 0 8000 8001 8002 8003 8004 8005 CODE IN HEX Figure 10. Histogram of 261,120 Conversions Input at the Code Transition AD7610 65536 0.6 0.8 1.0 σ 8006 8007 ...
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... AD7610 0 –20 –40 –60 –80 –100 –120 –140 –160 FREQUENCY (kHz) Figure 11. FFT 20 kHz 96 SNR 94 SINAD 92 90 ENOB FREQUENCY (kHz) Figure 12. SNR, SINAD, and ENOB vs. Frequency –55 –35 – TEMPERATURE (°C) Figure 13. SNR vs. Temperature ...
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... Figure 20. SFDR vs. Temperature (Excludes Harmonics) –55 –35 – TEMPERATURE (°C) DVDD 100 AVDD 10 1 0.1 OVDD PDREF = PDBUF = HIGH 10 100 1000 10000 100000 SAMPLING RATE (SPS) Figure 22. Operating Currents vs. Sample Rate AD7610 85 105 125 85 105 125 VCC +15V VEE –15V ALL MODES 1000000 ...
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... AD7610 700 PD = PDBUF = PDREF = HIGH VEE = –15V 600 VCC = +15V DVDD OVDD AVDD 500 400 300 200 100 0 –55 –35 – TEMPERATURE (°C) Figure 23. Power-Down Operating Currents vs. Temperature 105 Rev Page OVDD = 2.7V @ 85°C OVDD = 2.7V @ 25° ...
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... CNVST input to when the input signal is held for a conversion. Transient Response The time required for the AD7610 to achieve its rated accuracy after a full-scale step function is applied to its input. Reference Voltage Temperature Coefficient Reference voltage temperature coefficient is derived from the typical shift of output voltage at 25° ...
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... The AD7610 is a very fast, low power, precise, 16-bit analog-to- digital converter (ADC) using successive approximation capacitive digital-to-analog converter (CDAC) architecture. The AD7610 can be configured at any time for one of four input ranges with inputs in parallel and serial hardware modes dedicated write only, SPI-compatible interface via a configure- tion register in serial software mode. The AD7610 uses Analog Device’ ...
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... TRANSFER FUNCTIONS Using the OB/ 2C digital input or via the configuration register, the AD7610 offers two output codings: straight binary and twos complement. See Figure 26 and Table 7 for the ideal transfer char- acteristic and digital output codes for the different analog input ranges, V ...
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... AD7610 TYPICAL CONNECTION DIAGRAM Figure 27 shows a typical connection diagram for the AD7610 using the internal reference, serial data and serial configuration interfaces. Different circuitry from that shown in Figure 27 is optional and is discussed in the following sections. ANALOG SUPPLY (+5V) 100nF 10µF +7V TO +15.75V ...
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... V range. During the conversion phase, when the switches are opened, the input impedance is limited to C Since the input impedance of the AD7610 is very high, it can be directly driven by a low impedance source without gain error. To further improve the noise filtering achieved by the AD7610 analog input circuit, an external, one-pole RC filter between the amplifier’ ...
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... AD8021 AD8022 AD8610/AD8620 VOLTAGE REFERENCE INPUT/OUTPUT The AD7610 allows the choice of either a very low temperature drift internal voltage reference, an external reference or an external buffered reference. The internal reference of the AD7610 provides excellent perfor- mance and can be used in almost all applications. However, the linearity performance is guaranteed only with an external reference ...
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... When the internal reference is enabled (PDREF = PDBUF = low), the on-chip temperature sensor output (TEMP) is enabled and can be use to measure the temperature of the AD7610. To improve the calibration accuracy over the temperature range, the output of the TEMP pin is applied to one of the inputs of the analog switch (such as ADG779), and the ADC itself is used to measure its own temperature ...
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... During the acquisition phase, the operating currents are very low, which allows a significant power savings when the conversion rate is reduced (see Figure 32). This feature makes the AD7610 ideal for very low power, battery- operated applications. It should be noted that the digital interface remains active even during the acquisition phase ...
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... RD is generally used to enable the conversion result on the data bus. RESET The RESET input is used to reset the AD7610. A rising edge on RESET aborts the current conversion (if any) and tristates the data bus. The falling edge of RESET resets the AD7610 and clears the data bus and configuration register ...
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... D[15:2]. The AD7610 is configured to use the serial interface when SER/ PAR is held high. Data Interface The AD7610 outputs 16 bits of data, MSB first, on the SDOUT pin. This data is synchronized with the 16 clock pulses provided on the SDCLK pin. The output data is valid on both the rising and falling edge of the data clock ...
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... Figure 40. Master Serial Data Timing for Reading (Read Previous Conversion During Convert) INVSCLK = INVSYNC = D14 INVSCLK = INVSYNC = Rev Page AD7610 ...
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... Daisy-Chain Feature Also in the read after convert mode, the AD7610 provides a daisy- chain feature for cascading multiple converters together using the serial data input, SDIN, pin. This feature is useful for reducing component count and wiring connections when desired, for instance, in isolated multiconverter applications ...
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... Figure 42. Slave Serial Data Timing for Reading (Read After Convert) SER/PAR = 1 EXT/INT = 1 INVSCLK = D15 D14 D1 D0 Rev Page X15 X14 D1 D0 Y15 Y14 DATA = SDIN t 27 AD7610 ...
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... SOFTWARE CONFIGURATION The pins multiplexed on D[15:12] used for software configu- ration are: HW SCIN, SCCLK, and SCCS . The AD7610 is programmed using the dedicated write-only serial configurable port (SCP) for conversion mode, input range selection, output coding, and power-down using the serial configuration register. ...
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... ADSP-219x. Figure 46 shows an interface diagram between the AD7610 and the SPI-equipped ADSP-219x. To accommodate the slower speed of the DSP, the AD7610 acts as a slave device, and data must be read after conversion. This mode also allows the daisy-chain feature. The convert command could be initiated in response to an internal timer interrupt ...
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... Digital and analog ground planes should be joined in only one place, preferably underneath the AD7610 close as possible to the AD7610. If the AD7610 system where multiple devices require analog-to-digital ground connect- ions, the connections should still be made at one point only, a star ground point, established as close as possible to the AD7610 ...
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... AD7610BSTZ −40°C to +85°C 1 AD7610BSTZ-RL −40°C to +85°C 2 EVAL-AD7610CB EVAL-CONTROL BRD3 Pb-free part. 2 This board can be used as a standalone evaluation board or in conjunction with the EVAL-CONTROL BRD3 for evaluation/demonstration purposes. 3 This board allows control and communicate with all Analog Devices evaluation boards ending with the CB designators. ...
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... AD7610 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06395-0-10/06(0) Rev Page ...