LTC6362
16
6362fa
TYPICAL APPLICATIONS
Single-Ended-to-Differential Conversion of a 4V
P-P
Input with Gain of A
V
= 2 to Drive an ADC for Applications Where
the Importance of High Input Impedance Justifies Some Degradation in Distortion, Noise, and DC Accuracy. Input Is
True High Impedance, However Common Mode Noise and Offset Are Present on the Output. Additionally, When the
Input Signal Exceeds 2.8V
P-P
, a Step in Input Offset Will Occur That Will Degrade Distortion Performance
–
–
+
+
5V
3.9nF
3.9nF
3.9nF
A
IN
+
V
REF
V
DD
5V
LTC2379-18
SAR ADC
2.5V
GND
A
IN
–
6362 TA05
35.7Ω
35.7Ω
0Ω
0Ω
LTC6362
V
OCM
0.1µF
4.5V
0.5V
V
IN
SHDN
4.5V
0.5V
0.5V
V
–OUT
V
+OUT
Differentially Driving an ADC with ∆V
IN
= 8V
P-P
and Gain of A
V
= 1
Single-Ended-to-Differential Conversion of a 5V
P-P
, 2.5V Referenced Input with Gain of A
V
= –1.6 to Drive an ADC
–
–
+
+
5V
3.9nF
3.9nF
3.9nF
V
CM
2.5V
A
IN
+
V
REF
V
DD
5V
LTC2379-18
SAR ADC
2.5V
GND
A
IN
–
6362 TA03
35.7Ω
35.7Ω
0Ω
0Ω
LTC6362
V
OCM
0.1µF
619Ω
5V
0V
V
IN
619Ω 1k
1k
SHDN
4.5V
0.5V
0.5V
V
–OUT
V
+OUT
+
–
–
–
+
+
5V
3.9nF
3.9nF
3.9nF
A
IN
+
V
REF
V
DD
5V
LTC2379-18
SAR ADC
2.5V
GND
A
IN
–
6362 TA04
35.7Ω
35.7Ω
0Ω
0Ω
LTC6362
V
OCM
0.1µF
1k
4.5V
0.5V
V
INM
1k 1k
1k
SHDN
4.5V
0.5V
V
INP
4.5V
0.5V
0.5V
V
–OUT
V
+OUT
