AD7895AR-2 Analog Devices Inc, AD7895AR-2 Datasheet
AD7895AR-2
Specifications of AD7895AR-2
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AD7895AR-2 Summary of contents
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FEATURES Fast 12-Bit ADC with 3.8 s Conversion Time 8-Pin Mini-DlP and SOIC Single 5 V Supply Operation High Speed, Easy-to-Use, Serial Interface On-Chip Track/Hold Amplifier Selection of Input Ranges 10 V for AD7895-10 2.5 V for AD7895-3 0 ...
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AD7895–SPECIFICATIONS Parameter 2 DYNAMIC PERFORMANCE 3 Signal to (Noise + Distortion) Ratio @ + MIN MAX 3 Total Harmonic Distortion (THD) 3 Peak Harmonic or Spurious Noise 3 Intermodulation Distortion (IMD) 2nd Order Terms 3rd Order ...
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... SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 450 mW Thermal Impedance . . . . . . . . . . . . . . . . . . . . 170 C/W JA Lead Temperature, Soldering Vapor Phase (60 sec +215 C Infrared (15 sec +220 C Model Temperature Range AD7895AN-2 – +85 C AD7895AR-2 – +85 C AD7895BR-2 – +85 C AD7895AN-10 – +85 C AD7895AR-10 – +85 C AD7895BR-10 – +85 C AD7895AN-3 – ...
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AD7895 Pin Pin No. Mnemonic Description 1 REF IN Voltage Reference Input. An external reference source should be connected to this pin to provide the refer- ence voltage for the AD7895’s conversion process. The REF IN input is buffered on ...
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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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AD7895 CONVERTER DETAILS The AD7895 is a fast, 12-bit single supply A/D converter. It provides the user with signal scaling, track/hold, A/D converter and serial interface logic functions on a single chip. The A/D converter section of the AD7895 consists ...
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The track/hold amplifier acquires an input signal to 12-bit accuracy in less than 0.3 s. The operation of the track/hold is essentially transparent to the user. With the high sampling operating mode, the track/hold amplifier goes from its tracking mode ...
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AD7895 than the 9.8 s shown in diagram from the rising edge of CONVST. This is because the Track/Hold amplifier goes into its hold mode on the falling edge of CONVST, and the conver- sion will not be complete for ...
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MICROPROCESSOR/MICROCONTROLLER INTERFACE The AD7895 provides a three-wire serial interface that can be used for connection to the serial ports of DSP processors and microcontrollers. Figures 6 through 9 show the AD7895 interfaced to a number of different microcontrollers and DSP ...
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AD7895 IRQ2 RFS1 ADSP-2103/5 SCLK1 DR1 Figure 8. AD7896 to ADSP-2103 /5 Interface The timing relationship between the SCLK1 and RFS1 outputs of the ADSP-2103/5 are such that the delay between the rising edge of the SCLK1 and the rising ...
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Dynamic Performance (Mode 1 Only) With a combined conversion and acquisition time of 4.1 s, the AD7895 is ideal for wide bandwidth signal processing applica- tions. These applications require information on the ADC’s effect on the spectral content of the ...
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AD7895 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Plastic DIP (N-8) 0.430 (10.92) 0.348 (8.84 0.280 (7.11) 0.240 (6.10 0.325 (8.25) 0.300 (7.62) 0.060 (1.52) PIN 1 0.015 (0.38) 0.210 (5.33) MAX 0.130 (3.30) 0.160 ...