LTC1446 Linear Technology, LTC1446 Datasheet - Page 5

• Manufacturer Part Number: LTC1446
• Description: Dual 12-Bit Rail-to-Rail Micropower DACs in SO-8
• Manufacturer: Linear Technology

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