ADSD-1420S 查看數據表（PDF） - Murata Power Solutions

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ADSD-1420S

Dual 14-Bit, 20MSPS Sampling A/D Converter

Murata Power Solutions 

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Dual 14-Bit, 20MSPS

Sampling A/D Converter

FEATURES

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CJU
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SBUF

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SBOHF

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DPEFT
PWFS
GVMM
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SBOHF

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GPS
CPUI
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GENERAL DESCRIPTION

The ADSD-1420S is a functionally complete, dual

14-bit, 20MSPS, sampling A/D converter. Its standard,

40-pin, triple-wide SMT DIP contains two fast-settling

sample/hold amplifiers, two 14-bit A/D converters,

multiplexed output buffers, a precision reference, and

all the timing and control logic necessary to operate

from either two or a single start convert pulse.

The ADSD-1420S is optimized for wideband

frequency-domain applications and is fully FFT tested.

The ADSD-1420S requires only ±5V supplies and

typically consumes 1.6 Watts. The digital output power

supply is capable of directly driving 5V or 3V logic

systems. Models are available in either commercial

0 to +70°C or military -55 to +125°C operating

temperature ranges.

INPUT/OUTPUT CONNECTIONS

PIN FUNCTION

PIN FUNCTION

1 INPUT A

40 INPUT B

2 +5VA

39 +5VA

3 ANALOG GROUND

38 ANALOG GROUND

4 N.C.

37 N.C.

5 OFFSET A

36 OFFSET B

6 RANGE

35 N.C.

7 1.55V REF

34 EOC A

8 ANALOG GROUND

33 ANALOG GROUND

9 –5V

32 –5V

10 ENABLE A

31 ENABLE B

11 START A

30 START B

12 VDD

29 EOC B

13 BIT 14 (LSB)

28 BIT 1 (MSB)

14 BIT 13

27 BIT 2

15 BIT 12

26 BIT 3

16 BIT 11

25 BIT 4

17 BIT 10

24 BIT 5

18 BIT 9

23 BIT 6

19 BIT 8

22 BIT 7

20 DGND

21 DGND

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Figure 1. ADSD-1420S Functional Block Diagram

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