LTC1598LIG(RevA) Ver la hoja de datos (PDF) - Linear Technology

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LTC1598LIG
(Rev.:RevA)

4- and 8-Channel, 3V Micropower Sampling 12-Bit Serial I/O A/D Converters

Linear Technology 

LTC1594L/LTC1598L

PIN FUNCTIONS

VCC (Pin 15): Power Supply Voltage. This pin provides

power to the A/D Converter. It must be bypassed directly

to the analog ground plane.

VREF (Pin 16): Reference Input. The reference input

defines the span of the ADC.

ADCIN (Pin 17): ADC Input. This input is the positive

analog input to the ADC. Connect this pin to MUXOUT for

normal operation.

MUXOUT (Pin 18): MUX Output. This pin is the output of

the multiplexer. Tie to ADCIN for normal operation.

VCC (Pin 19): Power Supply Voltage. This pin should be

tied to Pin 15.

CH0 (Pin 20): Analog Multiplexer Input.

CH1 (Pin 21): Analog Multiplexer Input.

CH2 (Pin 22): Analog Multiplexer Input.

CH3 (Pin 23): Analog Multiplexer Input.

CH4 (Pin 24): Analog Multiplexer Input.

BLOCK DIAGRA S

LTC1594L

LTC1594L

15

MUXOUT

1 CH0

2 CH1

3 CH2

4 CH3

4-CHANNEL

MUX

7 COM

5

6

16

ADCIN

VREF VCC

12-BIT

+ SAMPLING

ADC

–

CSADC 9

CSMUX 13

CLK 12

DIN 14

DOUT 10

GND

8

1594L BD

LTC1598L

LTC1598L

18

MUXOUT

20 CH0

21 CH1

22 CH2

23 CH3

24 CH4

1 CH5

2 CH6

3 CH7

8-CHANNEL

MUX

8 COM

17

ADCIN

16

15, 19

VREF VCC

12-BIT

+ SAMPLING

ADC

–

GND

4, 9

CSADC

CSMUX

CLK

DIN

DOUT

NC

NC

10

6

5, 14

7

11

12

13

1598L BD

TEST CIRCUITS

Load Circuit for tdDO, tr and tf

DOUT

1.4V

3k

100pF

TEST POINT

1594L/98L TC01

Voltage Waveforms for DOUT Rise and Fall Times, tr, tf

DOUT

tr

VOH

VOL

tf

1594L/98L TC02

8

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