AD7898AR-10(Rev0) 데이터 시트보기 (PDF) - Analog Devices

부품명

상세내역

제조사

AD7898AR-10
(Rev.:Rev0)

5 V, 12-Bit, Serial 220 kSPS ADC in an 8-Lead Package

Analog Devices 

AD7898

AD7898 to MC68HC16 Interface

The Serial Peripheral Interface (SPI) on the MC68HC16 is

configured for Master Mode (MSTR = 1), Clock Polarity Bit

(CPOL) = 1 and the Clock Phase Bit (CPHA) = 0. The SPI is

configured by writing to the SPI Control Register (SPCR) (see

68HC16 user manual). The serial transfer will take place as a

16-bit operation when the SIZE bit in the SPCR register is set

to SIZE = 1. To implement the power-down modes with an

8-bit transfer set SIZE = 0. A connection diagram is shown in

Figure 20. The VDRIVE pin of the AD7898 takes the same sup-

ply voltage as that of the MC68HC16. This allows the ADC

to operate at a higher voltage than the serial interface, i.e.,

MC68HC16, if necessary.

AD7898*

SCLK

SDATA

CS

VDRIVE

MC68HC16*

SCLK/PMC2

MISO/PMC0

SS/PMC3

*ADDITIONAL PINS OMITTED FOR CLARITY

VDD

Figure 20. AD7898 to MC68HC16 Interface

OUTLINE DIMENSIONS

Dimensions shown in inches and (mm).

8-Lead SOIC

(SO-8)

0.1968 (5.00)

0.1890 (4.80)

8

0.1574 (4.00)

0.1497 (3.80) 1

5

0.2440 (6.20)

4 0.2284 (5.80)

PIN 1

0.0500 (1.27)

BSC

0.0196 (0.50)

0.0099 (0.25) ؋ 45؇

0.0098 (0.25)

0.0040 (0.10)

SEATING

PLANE

0.0688 (1.75)

0.0532 (1.35)

8؇

0.0192 (0.49)

0.0098 (0.25) 0؇

0.0138 (0.35)

0.0075 (0.19)

0.0500 (1.27)

0.0160 (0.41)

–16–

REV. 0

Share Link: