AD7827 Analog Devices, AD7827 Datasheet
AD7827
Specifications of AD7827
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AD7827 Summary of contents
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... The AD7827 has one single-ended analog input with an input span determined by the supply voltage. With a V input range of the AD7827 and with the input range 2.5 V. The parts are available in a small, 8-lead, 0.3" wide, plastic dual-in-line package (DIP) and an 8-lead, small outline IC (SOIC) ...
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... AD7827–SPECIFICATIONS Parameter DYNAMIC PERFORMANCE Signal-to-(Noise + Distortion) Ratio 1 Total Harmonic Distortion 1 Peak Harmonic or Spurious Noise 1 Intermodulation Distortion 2nd Order Terms 3rd Order Terms DC ACCURACY Resolution 1 Integral Nonlinearity (INL) 1 Differential Nonlinearity (DNL) 1 Offset Error 1 Gain Error Minimum Resolution for Which No Missing Codes are Guaranteed ...
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... I 200 OUTPUT C PIN L 50pF I 200 A OH –3– Test Conditions/Comments 5 V 10% For Specified Performance 3 V 10% For Specified Performance 8 mA Typically Logic Inputs = Typically 24 mW valid delay. OUT = 5 V 10% and time required for an DD +2.1V AD7827 ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD7827 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... The theoretical signal-to-(noise + distortion) ratio for an ideal N-bit converter with a sine wave input is given by: Signal-to-(Noise + Distortion) = (6.02N + 1.76) dB Thus for an 8-bit converter, this is 50 dB. Total Harmonic Distortion Total harmonic distortion (THD) is the ratio of the rms sum of harmonics to the fundamental. For the AD7827 it is defined as ...
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... V to the proximity of the CONVST and V mended to use decoupling capacitor first connected the AD7827 powers low current mode, i.e., power-down. A rising edge on the CONVST pin will cause the AD7827 to fully power up. For applications where power ...
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... DD REF REF Figure 6. Transfer Characteristic ANALOG INPUT The AD7827 has a single input channel with an input range 2 2.0 V, depending on the supply voltage (V ). This input range is automatically set on-chip DD “V detector” circuit operation of the ADC is detected ...
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... CONVST If the power-up time and the conversion time is 330 C), the AD7827 can be said to dissipate 30 mW for 1.33 s (worst case) during each conversion cycle. If the throughput rate is 100 kSPS, the cycle time and the average power dissipated during each cycle is (1.33/10) (30 mW) = 3.99 mW. ...
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... D OUT REV. 0 Mode 2 Operation (Automatic Power-Down) When the AD7827 is operated in Mode 2 (see Figure 14) it automatically powers down 530 ns after the falling edge of CONVST. The CONVST signal is brought low to initiate a conversion and is left logic low until 530 ns has elapsed after the falling edge of the CONVST pulse, i.e., before Point A or Point B in Figure 14, depending on the actual value of t Characteristics) ...
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... The D on the falling edge of the eighth SCLK after RFS goes low. The RFS output goes high again on the rising edge of the ninth SCLK. If the AD7827 does not receive a ninth SCLK, the RFS will be reset logic high by the next falling edge of CONVST. t ...
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... MICROPROCESSOR INTERFACING The Serial Interface on the AD7827 allows the part to be con- nected directly to a range of many different microprocessors and microcontrollers. This section explains how to interface the AD7827 with some of the more common DSP serial interface protocols. AD7827 to TMS320C5x The serial interface on the TMS320C5x uses a continuous serial clock and frame synchronization signals to synchronize the data transfer operations with peripheral devices such as the AD7827 ...
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... AD7827 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead 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 (4.06) MIN 0.115 (2.93) SEATING 0.022 (0.558) 0.100 0.070 (1.77) PLANE (2.54) 0.014 (0.356) 0.045 (1.15) BSC 8-Lead Small Outline Package (SO-8) 0 ...