qf4a512 ETC-unknow, qf4a512 Datasheet - Page 61

• Manufacturer Part Number: qf4a512
• Description: 4-channel Programmable Signal Converter Psc
• Manufacturer: ETC-unknow

13.4 DC coupled, Differential
Rev C5, Jan 07
Input
(+/-1V DC)
PGA x2
CH 1
CH 2
CH 3
CH 4
J1
BNC
J2
BNC
J3
BNC
J4
BNC
1
1
1
1
R1
R2
R3
R4
R5
R6
10K 1%
R7
R8
10K 1%
10K 1%
10K 1%
10K 1%
10K 1%
10K 1%
10K 1%
Table 23. Example resistor values for dc-coupled, differential
Figure 17. Application Circuit – Differential, dc coupled
0.1uF
0603
-0.25V +0.25V
-3.3V to 3.3V
-0.5 to +0.5V
-10V to 10V
-12V to 12V
-15V to 15V
-20V to 20V
-24V to 24V
-28V to 28V
Input Level
-1V to 1V
-2V to 2V
-3V to 3V
-5V to 5V
1V8
Input
(-1V to +1V DC)
PGA x2
3V3
C17
C9
QF4A512
0.1uF
0603
1
2
3
4
5
6
7
8
A1N
A1P
A2N
A2P
A3N
A3P
A4N
A4P
U1
PRELIMINARY
DC-coupled, differential
61
R1-R8 Value
1V8
110K
140K
190K
230K
270K
10K
10K
10K
10K
20K
23K
40K
90K
0.1 uF
C10
0603
1V8
DVDD33
DVDD18
XVDD18
DGND
XGND
RSTN
XOUT
C11
0.1 uF
0603
XIN
24
23
22
21
20
19
18
17
PGA setting
DC Coupled
Differential
x8
x4
x2
x1
x1
x1
x1
x1
x1
x1
x1
x1
x1
RESET
SCLK
DIN
DOUT
DRDY
CS
1Meg
R9
1V8
X1
20.000 MHz
HCM49-20.000MABJT
C16
0.1uF
0603
3V3
C13
1
18 pF
0603
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C15
TP1
0.1uF
0603
QF4A512
1V8
C12
C14
18 pF
0603
0.1uF
0603