qf4a512 ETC-unknow, qf4a512 Datasheet - Page 59

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

13.2 DC coupled, Single-ended
Rev C5, Jan 07
CH 1
CH 2
CH 3
CH 4
Input
(0 - 3.3V DC)
PGA x1
J1
BNC
J2
BNC
J3
BNC
J4
BNC
1
1
1
1
23.2K 1%
23.2K 1%
23.2K 1%
23.2K 1%
23.2K 1%
23.2K 1%
23.2K 1%
23.2K 1%
R5
R1
R6
R2
R7
R3
R8
R4
Figure 15. Application Circuit – Single-ended, dc coupled
Table 21. Example resistor values for dc-coupled, single-ended
0.1uF
0603
Input level
0 - 3.3V
0 – 10V
1V8
0 – 1V
0 – 5V
DC swing needs
to be between
(0.5 to 2.5) V
3V3
C17
C9
QF4A512
0.1uF
0603
DC-coupled, singled-ended
1
2
3
4
5
6
7
8
A1N
A1P
A2N
A2P
A3N
A3P
A4N
A4P
PRELIMINARY
U1
R1-R8 value
59
18k
23k
40k
90k
Internal impedance
10K connected to 1.2V
1V8
0.1 uF
PGA setting
C10
0603
x2
x1
x1
x1
1V8
DVDD33
DVDD18
XVDD18
DGND
XGND
RSTN
XOUT
C11
0.1 uF
0603
XIN
24
23
22
21
20
19
18
17
DC Coupled
Single Ended
RESET
SCLK
DIN
DOUT
DRDY
CS
1Meg
R9
1V8
X1
20.000 MHz
HCM49-20.000MABJT
www.quickfiltertech.com
C16
0.1uF
0603
3V3
C13
1
18 pF
0603
C15
TP1
0.1uF
0603
QF4A512
1V8
C12
C14
18 pF
0603
0.1uF
0603