ADCS7477 datasheet(18/22 Pages) NSC

tên linh kiện	ADCS7477

Giải thích chi tiết về linh kiện	1MSPS, 12-/10-/8-Bit A/D Converters in 6-Lead SOT-23

PDF	22 Pages

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nhà sản xuất	NSC [National Semiconductor (TI)]

Trang chủ	http://www.national.com

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Applications Information (Continued)

the first SCLK edge after CS goes low is a rising edge, all

four leading zeroes will be valid on the first four falling edges

of SCLK. If instead the first SCLK edge after CS goes low is

a falling edge, the first leading zero may not be set up in time

for a microprocessor or DSP to read it correctly. The remain-

ing data bits are still clocked out on the falling edges of

SCLK.

3.0 ADCS7476/77/78 TRANSFER FUNCTION

The output format of the ADCS7476/77/78 is straight binary.

Code transitions occur midway between successive integer

LSB values. The LSB widths for the ADCS7476 is V

DD /

4096; for the ADCS7477 the LSB width is V

DD / 1024; for the

ADCS7478, the LSB width is V

DD / 256. The ideal transfer

characteristic for the ADCS7476 and ADCS7477 is shown in

Figure 6, while the ideal transfer characteristic for the

ADCS7478 is shown in Figure 7.

20057711

FIGURE 6. ADCS7476/77 Ideal Transfer Characteristic

20057712

FIGURE 7. ADCS7478 Ideal Transfer Characteristic

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