7872RPFB 查看數據表（PDF） - MAXWELL TECHNOLOGIES

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7872RPFB

14-bit A/D converter

MAXWELL TECHNOLOGIES 

14-Bit A/D Converter

t1

CONVST

FIGURE 1. MODE 1 TIMING DIAGRAM SERIAL

TRACK HOLD

GOES INTO HOLD

7872

SSTRB 1

t10

t11

t13

SCLK2

t12

t14

SDATA

LEADING

ZEROS DB13 DB12 DB11 DB10

DB0

1. External 4.7 kΩ pull-up resistor.

2. External 2 kΩ pull-up resistor continuos SCLK (DASHED LINE) when 14/8/CLK (CONTROL) = -5 V; noncontinuous when 14/

8/CLK (CONTROL) = 0 V.

HBEN1

FIGURE 2. MODE 2 TIMING DIAGRAM, SERIAL READ

SSTRB2

t10

t11

t13

SCLK3

t12

t14

SDATA2

1. Times t15, t18, t19 and t20 are the same for a high byte read as for a low byte read.

2. External 4.7 kΩ pull-up resistor.

3. Continuos SCLK (DASHED LINE) when 14/8/CLK (CONTROL) = -5 V; noncontinuous when 14/8/CLK (CONTROL) = 0 V.

External 2 kΩ pull-up resistor.

5.21.02 Rev 4

All data sheets are subject to change without notice 6

©2001 Maxwell Technologies

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