AD7892ARZ-1 Analog Devices Inc, AD7892ARZ-1 Datasheet
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AD7892ARZ-1
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AD7892ARZ-1 Summary of contents
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GENERAL DESCRIPTION The AD7892 is a high speed, low power, 12-bit A/D converter that operates from a single +5 V supply. The part contains a 1.47 µs successive approximation ADC, an on-chip track/hold amplifier, an internal +2.5 V reference ...
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AD7892–SPECIFICATIONS Parameter A Versions DYNAMIC PERFORMANCE AD7892-1, AD7892-2 3 Signal to (Noise + Distortion) Ratio 70 3 Total Harmonic Distortion –78 3 Peak Harmonic or Spurious Noise –79 3 Intermodulation Distortion 2nd Order Terms –78 3rd Order Terms –78 AD7892-3 ...
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Parameter A Versions LOGIC OUTPUTS Output High Voltage, V 4.0 OH Output Low Voltage, V 0.4 OL DB11–DB0 ± 10 Floating-State Leakage Current 4 Floating-State Capacitance 15 Output Coding AD7892-1 and AD7892-3 AD7892-2 CONVERSION RATE Conversion Time 1.47 3 Track/Hold ...
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AD7892 TIMING CHARACTERISTICS A, B Parameter Versions t 1.47 CONV 1.6 t 200 ACQ 400 Parallel Interface ...
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Input Model Range ± ± AD7892AN-1 ± ± AD7892BN-1 ± ± AD7892AR-1 ± ± AD7892BR-1 ± ± ...
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AD7892 Pin No. Mnemonic Description Positive Supply Voltage ± 5 STANDBY 2 Standby Input. Logic Input. With this input at a logic high, the part is in its normal operating mode; with this input at ...
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Pin No. Mnemonic Description 16 DB4/SCLK Data Bit 4/Serial Clock. When the device is in its parallel mode, this pin is Data Bit 4, a three-state TTL-compatible output. When the device is in its serial mode, this becomes the serial ...
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AD7892 TERMINOLOGY Signal to (Noise + Distortion) Ratio This is the measured ratio of signal to (noise + distortion) at the output of the A/D converter. The signal is the rms amplitude of the fundamental. Noise is the rms sum ...
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CIRCUIT DESCRIPTION The AD7892 is a fast, 12-bit single supply A/D converter. It provides the user with signal scaling, track/hold, reference, A/D converter and versatile interface logic functions on a single chip. The signal scaling on the AD7892-1 allows the ...
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AD7892 pulse can be applied to the CS and RD inputs to latch data out of the AD7892 and into the gate array or ASIC. This eliminates the logic required in the gate array or ASIC to recognize the end ...
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The designed code transitions occur midway between successive integer LSB values (i.e., 1/2 LSB, 3/2 LSBs, 5/2 LSBs). Output coding is two’s complement binary with 1 LSB = FSR/4096 = 20 V/4096 = 4.88 mV for the ± ...
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AD7892 MICROPROCESSOR INTERFACING The AD7892 features both high speed parallel and serial inter- faces, allowing considerable flexibility in interfacing to micro- processor systems. To obtain optimum performance from the part, data should not be read during conversion and this limits ...
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Grounding and Layout The AD7892 has a single supply voltage pin, V plies both the analog and digital circuitry on the part. For opti- mum performance from the part recommended that this + taken from the ...
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AD7892 0.200 (5.08) 0.200 (5.08) 0.125 (3.18) 0.012 (0.30) 0.004 (0.10) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Plastic DIP (N-24) 1.228 (31.19) 1.226 (31.14 0.260 ± 0.001 (6.61 ± 0.03 PIN 1 0.130 (3.30) ...