5
LTC1458/LTC1458L
TEMPERATURE (°C)
–55
SFULL-SCALE VOLTAGE (V)
–25
5
1458 G06
95 125
4.110
4.105
4.100
4.095
4.090
4.085
4.080
35 65
LTC1458 Full-Scale Voltage vs
Temperature
TEMPERATURE (°C)
–55
OFFSET VOLTAGE (mV)
–25
5
1458 G07
95 125
5
4
3
2
1
0
–1
–2
–3
–4
–5
35 65
LTC1458
Offset Voltage vs Temperature
TEMPERATURE (°C)
–55
SUPPLY CURRENT (µA)
–25
5
1458 G05
95 125
950
940
930
920
910
900
890
880
870
860
850
35 65
V
CC
= 5.5V
V
CC
= 5V
V
CC
= 4.5V
LTC1458
Supply Current vs Temperature
X1/X2 C, X1/X2 D,X1/X2 A, X1/X2 B (Pins 1, 14, 16, 27):
The Input Pin that Sets the Gain for DAC C/D/A/B. When
grounded the gain will be 2, i.e., output full-scale will be
2 • REFHI. When connected to V
OUT
the gain will be 1, i.e.,
output full-scale will be equal to REFHI.
V
OUT C
,
V
OUT D
,
V
OUT A
,
V
OUT B
(Pins 2, 13, 17, 26): The
Buffered DAC Outputs.
CS/LD (Pin 3): The Serial Interface Enable and Load
Control Input.
D
IN
(Pin 4): The Serial Data Input.
REFHI C, REFHI D, REFHI A, REFHI B,(Pins 5, 9, 20, 24):
The Inputs to the DAC Resistor Ladder for DAC C/D/A/B.
GND (Pins 6, 23): Ground.
REFLO C, REFLO D, REFLO A, REFLO B, (Pins 7, 8, 21,
22): The Bottom of the DAC Resistor Ladders for the
DACs. These can be used to offset zero-scale above
ground. REFLO should be connected to ground when no
offset is required.
D
OUT
(Pin 10): The Output of the Shift Register which
Becomes Valid on the Rising Edge of the Serial Clock.
CLK (Pin 11): The Serial Interface Clock Input.
V
CC
(Pins 15, 28): The Positive Supply Input. 4.5V ≤ V
CC
≤ 5.5V (LTC1458), 2.7V ≤ V
CC
≤ 5.5V (LTC1458L). Re-
quires a 0.1µF bypass capacitor to ground.
REFOUT (Pin 19): The Output of the Internal Reference.
CLR (Pin 25): The Clear Pin. Clears all DACs to zero-scale
when pulled low.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
UU
U
PI FU CTIO S
