ad7886kp Analog Devices, Inc., ad7886kp Datasheet
ad7886kp
Available stocks
Related parts for ad7886kp
ad7886kp Summary of contents
Page 1
... One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 World Wide Web Site: http://www.analog.com Fax: 617/326-8703 2 LC MOS AD7886 CS RD CONVST CLOCK CONTROL BUSY TIMER 4-BIT LATCH 15 DB11 4-BIT THREE AND STATE LATCH DB0 OUTPUTS LOGIC 4-BIT LATCH AD7886 V DGND SS © Analog Devices, Inc., 1997 ...
Page 2
AD7886–SPECIFICATIONS as shown in Figure 2. All Specifications T Parameter 2 DYNAMIC PERFORMANCE 3 Signal-to-Noise Ratio (SNR) Total Harmonic Distortion (THD) Peak Harmonic or Spurious Noise Intermodulation Distortion (IMD) Second Order Terms Third Order Terms ACCURACY Resolution Integral Linearity T ...
Page 3
TIMING CHARACTERISTICS Limit at Limit MIN MAX MIN Parameter (J, K Versions) (B Version ...
Page 4
... AD7886 1, 2 Model AD7886JD AD7886KD AD7886JP AD7886KP AD7886BD AD7886TD NOTES 1Contact your sales office for availability of AD7886BD, AD7886TD and 1 MHz version. 2 Analog Devices reserves the right to ship J-Leaded Ceramic Chip Carrier (JLCCC) in lieu of PLCC packages Ceramic DIP Plastic Leaded Chip Carrier. ...
Page 5
DIP 1 DB7 DB6 2 DB5 3 DB4 4 5 DGND DB3 6 AD7886 DB2 7 TOP VIEW (Not to Scale) DB1 8 DB0 BUSY CONVST TERMINOLOGY Unipolar Offset Error ...
Page 6
AD7886 this amplifier typically by 20 MHz which is much greater than the Nyquist limit of the ADC result, it can be used for undersampling applications. The track-and-hold amplifier ac- quires the input signal to 12-bit accuracy in ...
Page 7
OFFSET AND GAIN ADJUSTMENT In most digital signal processing (DSP) applications, offset and full-scale errors have little or no effect on system performance. Offset error can usually be eliminated in the analog domain by ac coupling. Full-scale errors do not ...
Page 8
AD7886 BIPOLAR OFFSET AND GAIN ADJUSTMENT In applications where absolute accuracy is important, offset and gain error can be adjusted to zero. Offset is adjusted by trim- ming the voltage at the VIN1 or VIN2 input when the analog in- ...
Page 9
AD7886 DYNAMIC SPECIFICATIONS The AD7886 is specified for dynamic performance specifica- tions as well as traditional dc specifications such as integral and differential nonlinearity. These ac specifications are required for signal processing applications such as speech recognition, spec- trum analysis ...
Page 10
AD7886 determined by the largest harmonic in the spectrum, but for parts where the harmonics are buried in the noise floor, the peak will be a noise peak. Figure 14. AD7886 IMD Plot MICROPROCESSOR INTERFACING The AD7886 is designed to ...
Page 11
CLK DMA13 ADDRESS BUS OUT DMA0 ADDR ENCODE DMS EN DMACK CLR Q 74HC74 ADSP-2100 IRQn DMRD DMD15 DATA BUS DMD0 *ADDITIONAL PINS OMITTED FOR CLARITY Figure 17. AD7886–ADSP-2100 Interface A15 ADDRESS BUS A0 TMS320C25 ADDR ENCODE IS EN READY ...
Page 12
AD7886 A15 ADDRESS BUS A0 ADDR ENCODE EN MREQ RD INT CLK OE Q3 Z-80 D3 8085A Q0 D0 74HC374 D7 DATA BUS D0 *ADDITIONAL PINS OMITTED FOR CLARITY Figure 21. AD7886–Z-80/8085A Interface APPLICATION HINTS Good printed circuit (PC) board ...
Page 13
POWER SUPPLY CONNECTIONS The PC board requires two analog power supplies and one 5 V digital supply. Connections to the analog supply are made di- rectly to the PC board as shown on the silkscreen in Figure 24. The connections ...
Page 14
AD7886 COMPONENT LIST IC1 AD7886, 12-Bit Sampling ADC IC2 AD845, Op Amp IC3 AD586, Precision Voltage Reference IC4 AD707, Op Amp IC5 MC78L05 Regulator IC6 MC79L05, –5 V Regulator IC7 74HC04, Hex Inverter IC8, IC9 74HC374, Octal ...
Page 15
Figure 25. PC Board Component Side Layout for Figure 23 Figure 26. PC Board Solder Side Layout for Figure 23 REV. B –15– AD7886 ...
Page 16
AD7886 0.048 (1.21) 0.042 (1.07) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 28-Pin Ceramic DIP (D-28) 28-Pin PLCC (P-28A) 0.180 (4.57) 0.165 (4.19) 0.048 (1.21) 0.056 (1.42) 0.042 (1.07) 0.025 (0.63) 0.042 (1.07) 0.015 (0.38 ...