ADS-118MM 查看數據表（PDF） - Murata Power Solutions

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ADS-118MM

12-Bit, 5MHz, Low-Power Sampling A/D Converters

Murata Power Solutions 

®

®

ADS-118/118A

4.7µF

À +5V

0.1µF

14

13, 21

–5V

4.7µF

0.1µF

20

18, 23

ADS-118

ADS-118A

ANALOG

INPUT

19

START

16

CONVERT

12 BIT 1 (MSB)

11 BIT 2

10 BIT 3

9 BIT 4

8 BIT 5

7 BIT 6

6 BIT 7

5 BIT 8

4 BIT 9

3 BIT 10

2 BIT 11

1 BIT 12 (LSB)

15 EOC

17 ENABLE (1-12)

or OFFSET ADJUST

À A single +5V supply should be used for both the +5V analog and +5V digital.

If separate supplies are used, the difference between the two cannot exceed 100mV.

Figure 3. Typical Connection Diagram

N

N+1

START

CONVERT

100ns typ.

INTERNAL S/H

EOC

OUTPUT

DATA

10ns typ.

Hold

30ns, ±5ns

Acquisition Time

85ns typ.

90ns max.

35ns min., 40ns typ., 50ns max.

Conversion Time

140ns typ., 150ns max.

DATA N-1 VALID

130ns min.

150ns typ.

INVALID DATA

20ns typ.

DATA N VALID

INVALID DATA

50ns typ.

70ns max.

Note: Scale is approximately 10ns per division.

Figure 4. ADS-118/118A Timing Diagram

5

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