Datasheet

LTC2754
7
2754f
TYPICAL PERFORMANCE CHARACTERISTICS
Integral Nonlinearity (INL) Differential Nonlinearity (DNL)
LTC2754-12
T
A
= 25°C, unless otherwise noted.
V
DD
(V)
2.5
0.5
LOGIC THRESHOLD (V)
0.75
1
1.25
1.5
2
3
3.5 4 4.5
5 5.5
1.75
2754 G14
RISING
FALLING
Logic Threshold
vs Supply Voltage
Supply Current
vs Logic Input Voltage
LTC2754
Supply Current
vs Clock Frequency
Midscale Glitch
Settling 0V to 10V
CODE
0
–1.0
INL (LSB)
–0.8
–0.4
–0.2
0
1.0
0.4
1024
2048
2754 G11
–0.6
0.6
0.8
0.2
3072
4095
V
DD
= 5V
V
REF
= 5V
±10V RANGE
CODE
0
–1.0
DNL (LSB)
–0.8
–0.4
–0.2
0
1.0
0.4
1024
2048
2754 G12
–0.6
0.6
0.8
0.2
3072
4095
V
DD
= 5V
V
REF
= 5V
±10V RANGE
DIGITAL INPUT VOLTAGE (V)
0
SUPPLY CURRENT (mA)
3
4
5
4
2754 G13
2
1
0
1
2
3
5
V
DD
= 5V
CLR, LDAC, SDI, SCK,
CS/LD TIED TOGETHER
V
DD
= 3V
SCK FREQUENCY (Hz)
1
0.0001
SUPPLY CURRENT (mA)
0.001
0.01
0.1
1
10
100
V
DD
= 5V
100 10k 1M 100M
2754 G15
V
DD
= 3V
Midscale Glitch
CS/LD
2V/DIV
V
OUT
5mV/DIV
500ns/DIVV
DD
= 3V
V
REF
= 5V
5V RANGE
LT1468 OUTPUT AMPLIFIER
C
FEEDBACK
= 27pF
2754 G16
0.26nV•s TYP
CS/LD
5V/DIV
V
OUT
5mV/DIV
500ns/DIVV
DD
= 5V
V
REF
= 5V
5V RANGE
LT1468 OUTPUT AMPLIFIER
C
FEEDBACK
= 27pF
2754 G17
1.25nV•s TYP
500ns/DIV
CS/LD
5V/DIV
GATED
SETTLING
WAVEFORM
250µV/DIV
2754 G17
USING LT1469 AMP
C
FEEDBACK
= 12pF
0V TO 10V STEP
RISING MAJOR CARRY TRANSITION.
FALLING TRANSITION IS SIMILAR OR BETTER
RISING MAJOR CARRY TRANSITION.
FALLING TRANSITION IS SIMILAR OR BETTER