AD7899ARS-2 Analog Devices Inc, AD7899ARS-2 Datasheet
AD7899ARS-2
Specifications of AD7899ARS-2
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AD7899ARS-2 Summary of contents
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GENERAL DESCRIPTION The AD7899 is a fast, low-power, 14-bit A/D converter that operates from a single 5 V supply. The part contains a 2.2 µs successive-approximation ADC, a track/hold amplifier, 2.5 V reference, on-chip clock oscillator, signal conditioning circuitry, ...
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AD7899–SPECIFICATIONS Parameter SAMPLE AND HOLD –0.1 dB Full Power Bandwidth –3 dB Full Power Bandwidth Aperture Delay Aperture Jitter 2 DYNAMIC PERFORMANCE AD7899-1 Signal to (Noise + Distortion) 3 Ratio @ MIN MAX 3 Total ...
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Parameter OGIC INPUTS L Input High Voltage, V INH Input Low Voltage, V INL Input Current Input Capacitance LOGIC OUTPUTS Output High Voltage Output Low Voltage DB13–DB0 High Impedance Leakage Current ...
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AD7899 TIMING CHARACTERISTICS to T and valid for and 5 V MAX DRIVE A, B and S Parameter Versions t 2.2 CONV 2.46 t 0.3 ACQ t 120 EOC 180 5 t – External V ...
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... V AD7899AR 2.5 V ± AD7899AR-3 2.5 V ± AD7899BR-3 2.5 V ± ± AD7899ARS AD7899ARS 2.5 V ± AD7899ARS-3 2.5 V SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 450 mW θ Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . 95°C/W JA Lead Temperature, Soldering Vapor Phase (60 sec 215°C Infrared (15 sec 220° SSOP Package, Power Dissipation . . . . . . . . . . . . . . . 450 mW θ ...
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AD7899 Pin No. Mnemonic Description Reference Input/Output. This pin is provides access to the internal reference (2.5 V ± 20 mV) and 1 V REF also allows the internal reference to be overdriven by an external reference source (2.5 V ...
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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 of ...
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AD7899 CONVERTER DETAILS The AD7899 is a high-speed, low-power, 14-bit A/D converter that operates from a single 5 V supply. The part contains a 2.2 µs successive-approximation ADC, track/hold amplifier, an internal 2.5 V reference and a high-speed parallel interface. ...
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REFERENCE 6k TO ADC REFERENCE V REF CIRCUITRY INA TRACK/HOLD R3 V INB R4 GND For the AD7899- kΩ kΩ kΩ and kΩ. The ...
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AD7899 AD7899-3 Figure 4 shows the analog input section of the AD7899-3. The analog input range is ± 2 the V INA can be left unconnected but connected to a potential then that potential must ...
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CLKIN CONVST BUSY/EOC DATA CLKIN CONVST BUSY/EOC DATA EOC Mode The CONVST signal is normally high. Pulsing the CONVST low will initiate a conversion on its rising edge. The state of the CONVST signal is checked at the end of ...
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AD7899 2 1 CONVST/ CLKIN EOC START OF NEW CONVERSION (INPUT SAMPLED) Standby Mode Operation The AD7899 has a Standby Mode whereby the device can be placed in a low current consumption mode (5 µA typ). The AD7899 is placed ...
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FREQUENCY – Hz Effective Number of Bits The formula given in Equation 1 relates the SNR to the number of bits. Rewriting the formula Equation 2, it ...
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AD7899 MICROPROCESSOR INTERFACING The high-speed parallel interface of the AD7899 allows easy interfacing to most DSPs and microprocessors. The AD7899 interface of the AD7899 consists of the data lines (DB0 to DB13), CS, RD, and BUSY/EOC. AD7899–ADSP-21xx Interface Figure 14 ...
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PIN 1 0.0118 (0.30) 0.0040 (0.10) 0.078 (1.98) 0.068 (1.73) 0.008 (0.203) 0.002 (0.050) AD7899–Revision History Location Data Sheet changed from REV REV. A. Edit to Timing page heading . . . . . . . . . ...
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