Datasheet

LTC1992 Family
39
1992fb
TYPICAL APPLICATIONS
Single-Ended to Differential Conversion Driving an ADC
2.2μF
10μF
10μF
10Ω
47μF
4
6
REFCOMP
4.375V
CONTROL
LOGIC
AND
TIMING
B15 TO B0
16-BIT
SAMPLING
ADC
–
+
10μF
5V OR
3V
μP
CONTROL
LINES
D15 TO D0
OUTPUT
BUFFERS
16-BIT
PARALLEL
BUS
11 TO 26
1992 TA06a
OGND
OV
DD
28
29
1
2
A
IN
+
A
IN
–
SHDN
CS
CONVST
RD
BUSY
33
32
31
30
27
LTC1603
3
36
35
10
9
5V
5V
AV
DD
AV
DD
7.5k
DV
DD
DGND
V
REF
8
AGND
AGND
7
AGND
5
AGND
34
–5V
V
SS
10μF
2.5V
REF
10μF
1.75X
+
+
+ +
+
+
–
–
+
+
5V
–5V
LTC1992-1
3
6
V
OCM
V
MID
V
IN
100pF
4
5
2
7
8
1
100Ω
100Ω
0.1μF
0.1μF
FFT of the Output Data
SNR =85.3dB
THD = –72.1dB
SINAD = –72dB
f
IN
= 10.0099kHz
f
SAMPLE
= 333kHz
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
FREQUENCY (kHz)
0
AMPLITUDE (dB)
8070
1992 TA06b
2010
4030
6050
10090