STB4395 Datasheet, PDF (5/16 Pages) STMicroelectronics – CT2 RECEIVER/TRANSMITTER

STB4395
1 - PIN DESCRIPTION (continued)
1.2 - Pin List (continued)
Pin
Name
Description
46
NSAWO RX First IF Amplifier Input
47
SAWO RX First IF Amplifier Input
48
VNIF
Negative Battery Supply Input for RX sections
49
VNRF
Negative Battery Supply Input for RF front end
50
SAWI
RX First Mixer Output
51
NSAWI RX First Mixer Output
52
VRRF
Regulated Negative Supply for RF front end
53
VNPA
Negative Supply for power amplifier
54
VPRF1 Positive Battery Supply for RF front end
55
NRF
Input LNA/Output PA
56
RF
Input LNA/Ouput PA
57
VPRF2 Positive Battery Supply for RF front end
58 ADJPWR Transmit Power Adjust
59
SHAPE Time Constant for PA on-off ramp
60
TXFLT Bandpass Filter for TX RF
61
NTXFLT Bandpass Filter for TX RF
62
VPD
Positive Battery Supply for digital circuitry
63
VRD
Regulated Negative Supply for digital circuitry
64
VND
Negative Battery Supply for digital circuitry
Ext. Connection and Suppl. Information
R = 8.5kΩ to VRRF
C = 560pF
1.3 - Analog and Filter Pins
Pin
Symbol
58
ADJPWR
28
BRF1
31
BRF2
27
BRF3
42, 39
DEC, NDEC
29
DISCI
30
DISCO
33
FLTRI
16
FLTRO
21
FLTRS
6, 7
I, NI(1)
40, 41
43, 44
8, 9
IF2I, NIF2I
IF2O, NIF2O
Q, NQ(1)
7
REFIQ
56, 55
RF, NRF
37
RSSI
50, 51
47, 46
SAWI, NSAWI
SAWO, NSAWO
59
SHAPE
19
SLTC
12
SYNCLK
60, 61
35, 34
TXFLT/ NTXFLT
VCOI, NVCOI
14, 15
VCOO, NVCOO
25, 24
VCOS, NVCOS
Description
Transmitter Output Power Adjust
Bit Rate Filter1
Bit Rate Filter 2
Bit Rate Filter 3
RX IF2 Amplifier Decoupling
FM Discriminator Tank Circuit
FM Discriminator Tank Circuit
Loop Filter for RX PLL
Loop Filter for TX PLL
Loop Filter for Channel PLL
Transmit Quadrature Inputs ((1)STB4395 only)
Inputs from 2nd IF Filter
Outputs to 2nd IF Filter
Q-Transmit Quadrature Input ((1)STB4395 only)
IQ Reference Quadrature Transmit Input (STB4395A only)
Input RX LNA/Ouput TX PA
Received Signal Strength Indicator Output
First Mixer Output
First IF Amplifier Input
Time Constant for PA on-off Ramp
Slicer Time Constant Capacitor
Synthesizer Clock Input 14.4MHz
Bandpass Filter for TX RF
Tank Circuit for 152.1MHz RX Oscillator
Tank Circuit for 300.8MHz TX Oscillator
Tank Circuit for 650 to 850MHz Channel Oscillator
5/16