LTC1446/LTC1446L
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
LTC1446 Supply Current vs
Temperature
LTC1446L Supply Current
vs Temperature
LTC1446L Supply Current vs Logic
Input Voltage
700
1.2
1.1
970
960
950
940
930
920
910
900
690
680
670
660
650
640
630
620
V
= 3.3V
1.0
0.9
0.8
0.7
0.6
0.5
CC
CC
V
V
= 5.5V
= 5V
CC
V
= 3V
CC
CC
V
= 2.7V
V
= 4.5V
CC
25 45
TEMPERATURE (°C)
–55 –35 –15
5
65 85 105 125
1.0
1.5
2.0
2.5
3.0
0.5
–55 –35 –15
5
25 45 65 85 105 125
LOGIC INPUT VOLTAGE (V)
TEMPERATURE (°C)
1446/46L G12
1446/46L G10
1446/46L G11
Large Signal Transient Response
V
OUT
(2V/DIV)
CS/LD
(5V/DIV)
TIME (10µs/DIV)
1446L G13
U
U
U
PIN FUNCTIONS
DOUT: The output of the shift register which becomes valid
CLK: The Serial Interface Clock.
on the rising edge of the serial clock.
DIN: The Serial Interface Data.
GND: Ground.
CS/LD: The Serial Interface Enable and Load Control.
When CS/LD is low the CLK signal is enabled, so the data
can be clocked in. When CS/LD is pulled high data is
loaded from the shift register into the DAC registers,
updating the DAC outputs.
VOUT A,VOUT B: Buffered DAC Outputs.
VCC: Positive Supply Input.
4.5V ≤ VCC ≤ 5.5V (LTC1446), 2.7V ≤ VCC ≤ 5.5V
(LTC1446L). Requires a 0.1µF bypass capacitor to
ground.
5
Linear [ Linear ]
