ltc1598l Linear Technology Corporation, ltc1598l Datasheet - Page 8

• Manufacturer Part Number: ltc1598l
• Description: 4- And 8-channel, 3v Micropower Sampling 12-bit Serial I/o A/d Converters
• Manufacturer: Linear Technology Corporation

PIN
BLOCK DIAGRA S
LTC1594L/LTC1598L
V
power to the A/D Converter. It must be bypassed directly
to the analog ground plane.
V
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.
8
TEST CIRCUITS
CC
REF
U
(Pin 15): Power Supply Voltage. This pin provides
(Pin 16): Reference Input. The reference input
1
2
3
4
7 COM
FUNCTIONS
LTC1594L
CH0
CH1
CH2
CH3
U
4-CHANNEL
MUX
Load Circuit for t
D
OUT
MUXOUT
U
15
LTC1594L
W
1.4V
5
ADCIN
3k
+
100pF
dDO
SAMPLING
–
12-BIT
, t
GND
ADC
r
6
V
8
and t
REF
TEST POINT
V
1594L/98L TC01
f
CC
16
CSMUX
CSADC
D
1594L BD
CLK
OUT
D
IN
9
13
12
14
10
V
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.
CC
D
(Pin 19): Power Supply Voltage. This pin should be
OUT
20
21
22
23
24
Voltage Waveforms for D
1
2
3
8 COM
LTC1598L
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
t
r
8-CHANNEL
MUX
MUXOUT
18
LTC1598L
OUT
17
ADCIN
+
Rise and Fall Times, t
SAMPLING
–
12-BIT
GND
ADC
16
V
4, 9
REF
V
CC
15, 19
CSMUX
CSADC
t
f
D
CLK
OUT
1598L BD
D
NC
NC
IN
1594L/98L TC02
10
6
5, 14
7
11
12
13
r
, t
V
V
OH
OL
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f