Datasheet LTC1594, LTC1598 (Analog Devices) - 8

LTC1594/LTC1598
U U U PIN FUNCTIONS VCC (Pin 15):
Power Supply Voltage. This pin provides
VCC (Pin 19):
Power Supply Voltage. This pin should be power to the A/D Converter. It must be bypassed directly tied to Pin 15. to the analog ground plane.
CH0 (Pin 20):
Analog Multiplexer Input.
VREF (Pin 16):
Reference Input. The reference input de-
CH1 (Pin 21):
Analog Multiplexer Input. fines the span of the ADC.
CH2 (Pin 22):
Analog Multiplexer Input.
ADCIN (Pin 17):
ADC Input. This input is the positive analog input to the ADC. Connect this pin to MUXOUT for
CH3 (Pin 23):
Analog Multiplexer Input. normal operation.
CH4 (Pin 24):
Analog Multiplexer Input.
MUXOUT (Pin 18):
MUX Output. This pin is the output of the multiplexer. Tie to ADCIN for normal operation.
W BLOCK DIAGRA S LTC1594 LTC1598
15 5 6 16 18 17 16 15, 19 MUXOUT ADCIN V MUXOUT ADCIN V REF VCC REF VCC 9 20 CH0 CSADC 1 CH0 13 21 CH1 10 CSMUX CSADC 2 CH1 12-BIT 12 22 CH2 6 4-CHANNEL + CLK CSMUX 3 CH2 SAMPLING MUX 14 23 CH3 ADC DIN 8-CHANNEL 12-BIT 5, 14 4 CH3 10 + CLK 24 CH4 MUX SAMPLING 7 – DOUT ADC DIN 7 COM 1 CH5 11 GND LTC1594 – DOUT 2 CH6 12 NC 8 3 CH7 13 NC 8 COM GND LTC1598 1594/98 BD 4, 9
TEST CIRCUITS Load Circuit for tdDO, tr and tf Voltage Waveforms for DOUT Rise and Fall Times, tr, tf
1.4V VOH DOUT VOL 3k DOUT TEST POINT tr tf 1594/98 TC02 100pF 1594/98 TC01 15948fb 8