SPRF2738A Datasheet, PDF (4/12 Pages) List of Unclassifed Manufacturers – Low Power FM/FSK IF IC

SPRF2738A
5. SIGNAL DESCRIPTIONS
5.1. Die form PIN Out
Mnemonic PIN No.
Type
Description
OSCI
1
I
Oscillator input
OSCO
2
O
Oscillator output
MXO
3
O
Mixer output, Ro = 1.8K
PD
4
I
Power down, internally pulled high. PD =”H”: power down; PD = ”L”: chip enable.
VDD
5
I
Positive power supply
LMI
6
I
Limit amplifier input, Ri = 1.8K
CN
7
I
Inverting input of comparator
l _CF
8
O
Discriminator output filtering capacitor
tia ^{ly QUAD}
9
I
Discriminator input for quadrature demodulator
n ^{n LMO}
10
O
Limiting amplifier output
DEMO
11
O
FM demodulation output
e ^O _OPP
12
I
Non-inverting input of operational amplifier. Internally biased at 1.9V
fid ^{e OPN}
13
I
Inverting input of operational amplifier
s ^OPO
14
O
Output of operational amplifier
n VSS
15
I
Ground
o ^U CP
16
I
Non-inverting input of comparator
DOB
17
O
Inverted data output
C B _DO
18
O
Comparator output, data output
s ^A LNAI
19
I
Input of low noise amplifier, RF input
lu ^A _{5.2. PIN Configuration}
p ^S _OSCI
1
n _{R OSCO}
2
u _{A MXO}
3
S VDD
4
R _LMI
5
B _CN
6
r ^CF
7
QUAD
8
16 LNAI
15 VSS
14 DO
13 DOB
12 CP
11 OPO
10 OPN
9
DEMO
Fo_{SPRF2738A -PS031}
OSCI
1
OSCO
2
MXO
3
VDD
4
LMI
5
CN
6
CF
7
QUAD
8
16 LNAI
15 VSS
14 DOB
13 NC
12 CP
11 OPO
10 OPN
9
DEMO
SPRF2738A -PS032
OSCI
OSCO
MXO
VDD
LMI
CN
CF
QUAD
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
SPRF2738A
-002C-PS031
LNAI
VSS
DO
RSSI
CP
OPO
OPN
DEMO
© Sunplus Technology Co., Ltd.
4
Proprietary & Confidential
APR. 30, 2003
Version: 1.2