LTC1446IS8 Datasheet, PDF (5/12 Pages) Linear Dimensions Semiconductor – Dual 12-Bit Rail-to-Rail Micropower DACs in SO-8

TYPICAL PERFORMANCE CHARACTERISTICS
LTC1446L Supply Current vs Logic
Input Voltage
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.5
1.0 1.5 2.0 2.5 3.0
LOGIC INPUT VOLTAGE (V)
1446/46L G10
LTC1446 Supply Current vs
Temperature
970
960
950
V_CC = 5.5V
940
930
V_CC = 5V
920
910
V_CC = 4.5V
900
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
1446/46L G11
Large Signal Transient Response
LTC1446/LTC1446L
LTC1446L Supply Current
vs Temperature
700
690
680
V_CC = 3.3V
670
660
V_CC = 3V
650
640
V_CC = 2.7V
630
620
– 55 – 35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
1446/46L G12
V_OUT
(2V/DIV)
CS/LD
(5V/DIV)
TIME (10µs/DIV)
1446L G13
PIN FUNCTIONS
CLK: The Serial Interface Clock.
D_IN: The Serial Interface Data.
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.
D_OUT: The output of the shift register which becomes valid
on the rising edge of the serial clock.
GND: Ground.
V_{OUT A},V_{OUT B}: Buffered DAC Outputs.
V_CC: Positive Supply Input.
4.5V ≤ V_CC ≤ 5.5V (LTC1446), 2.7V ≤ V_CC ≤ 5.5V
(LTC1446L). Requires a 0.1µF bypass capacitor to
ground.
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