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DEH-P90DAB
- Pin Functions (U2731B-MFN)
Pin No.
Pin Name
1
SCL
2
SDA
3
SWA
4
SWB
5
FREF
6
SWC
7
CAO
8
CBO
9
CCO
10
GND
11
GND
12
RFA1
13
RFA2
14
RFB1
15
RFB2
16
CPRF
17
GND
18
SAW1
19
SAW2
20
VS
21
SLI
22
WAGC
23
IFIN2
24
IFIN1
25
VS
26
IFAGCIN2
27
IFAGCIN1
28
CPIF
29
IFOUT
30
GND
31
GND
32
C1VC
33
B2VCO
34
B1VCO
35
C2VC
36
GND
37
GND
38
VS
39
PD
40
VD
41
PLCK
42
OSCI
43
OSCO
44
ADR
*U2731B-MFN
92
I/O
Function and Operation
2
I
Clock input(I
C bus)
2
I
Data input(I
C bus)
O
Switching output(open collector)
O
Switching output(open collector)
O
Reference frequency output(for U2730B-BFS)
O
Switching output(open collector)
O
Output of D/A converter A
O
Output of D/A converter B
O
Output of D/A converter C
Ground
Ground
I
Input 1 of amplifier A(differential)
I
Input 2 of amplifier A(differential)
I
Input 1 of amplifier B(differential)
I
Input 2 of amplifier B(differential)
O
Charge-pump output(RF AGC block)
Ground
O
SAW drive output 1(differential)
O
SAW drive output 2(differential)
Supply voltage
I
AGC mode section input(charge-pump current high)
I
AGC mode section input(charge-pump current off)
I
Input 2 of IF amplifier(differential)
I
Input 1 of IF amplifier(differential)
Supply voltage
I
Input 2 of IF AGC block(differential)
I
Input 1 of IF AGC block(differential)
O
Charge-pump output(IF AGC block)
O
IF output(single ended)
Ground
Ground
Collector 1 of VCO
Base 2 of VCO
Base 1 of VCO
Collector 2 of VCO
Ground
Ground
Supply voltage
O
Tristate charge pump output
O
Active-filter output
O
Lock-indicating output(open collector)
I
Input of reference oscillator/buffer
O
Output of reference oscillator/buffer
I
Address selection(I
2
C bus)
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