STB4395
CT2 RECEIVER/TRANSMITTER
.
.
.
.
.
.
.
.
.
.
.
.
ADVANCE DATA
FULLY INTEGRATED DOUBLE SUPERHETE-
RODYNE RECEIVER
OPERATION FROM 800MHz TO 1000MHz
RECEIVER OUTPUT AS BITSTREAM
FULLY INTEGRATED TRANSMITTER
TRANSMITTER INPUT I/Q/REFIQ
OR
I/I, Q/Q
INTEGRATED POWER AMPLIFIER
CT2 PA SWITCH-ON PROFILE INTEGRATED
VCO’s INTEGRATED
SYNTHESIZERS INTEGRATED
CHANNEL SELECT LOGIC ON CHIP
INTEGRATED VOLTAGE REGULATION
SUPPLY VOLTAGES FROM 3.0V TO 5.5V
DESCRIPTION
The STB4395(A) is a fully integrated receiver-
transmitter designed for CT2 applications, and in-
corporates all the VCO’s, synthesizers, PLLs, and
channel select logic, to make a fully functional
”single chip” radio.
The receiver is of the double superhet architecture
and operates from an aerial input (via a SAW filter)
to bitstream output to CT2 format, whilst the trans-
mitter operates from I/Q inputs to +13dBm at the
final frequency. A single (external) frequency ref-
erence is all that is required to give full coverage
over the range of 800 to 1000MHz.The on-off slope
of the Transmit PAis governed internally to give the
required switch-on ramp, whilst the output can be
swiched from low to high power by means of an
external digital control signal.
The channelselect is controlled from a digital serial
input, and allows continuous channel control from
800 to 1000MHz.
T h e S TB 4 3 9 5 e x is t s in t wo v ersio n s:
the STB4395, which has
I/I, Q/Q
transmit data
input/outputs, is designed to operate with the
SGS-THOMSON baseband companion part, the
ST5095. The STB4395A has a 3 wire I/Q interface
and is compatible with commercially available I/Q
transmit data baseband IC’s.
April 1996
TQFP64
(Plastic Package)
ORDER CODE :
STB4395 or STB4395A
1/16
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice.
STB4395
CONTENT
1
1.1
1.2
1.3
1.4
1.5
2
3
3.1
3.2
3.3
4
5
5.1
5.2
6
7
7.1
7.2
8
8.1
8.2
8.3
8.3.1
8.3.2
8.3.3
8.4
8.5
8.6
8.7
8.8
8.9
8.10
8.11
8.11.1
8.11.2
9
9.1
9.1.1
9.1.2
9.2
9.2.1
9.2.2
10
2/16
Page
3
4
5
5
6
6
7
8
8
8
8
8
9
9
9
9
9
9
9
10
10
11
11
11
11
12
13
13
13
13
13
14
14
14
14
14
15
15
15
15
15
15
15
16
................
... ... .... . .. ...
................
.. .. . .. . .. . . . . . .
.. .. . .. . .. .. .. . .
PIN DESCRIPTION.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PIN CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PIN LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANALOG AND FILTER PINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIGITAL, SIGNAL AND CONTROL PINS. . . . . . . . . . . . . . . . . . . .
POWER SUPPLY PINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOCK DIAGRAM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUNCTIONAL DESCRIPTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMITTER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHANNEL SELECT CONTROL LOGIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ABSOLUTE MAXIMUM RATINGS.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POWER SUPPLIES
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUPPLIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GROUND PLANE CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL CHARACTERISTICS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TIMING INFORMATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TURN ON-OFF TIMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHANNEL SELECT TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSCEIVER SECTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVER-INPUT SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMITTER OUTPUT SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYNTHESIZER/MODULATOR/CHANNEL SELECT LOOP . . . . . . . . . . . . . . . . . . . . . .
Synthesizer phase noise and spurious . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Channel select loop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Channel frequency setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYSTEM CLOCK INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVER -RF INPUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIGITAL INPUT BUFFERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIGITAL OUTPUT BUFFERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVER- FSH TRI STATE INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVER- RSSI OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POWER DOWN BUFFER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMITTER - DATA INPUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STB4395A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STB4395 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
APPLICATIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TYPICAL DC CONNECTION SCHEMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
APPLICATION CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PACKAGE MECHANICAL DATA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STB4395
1 - PIN DESCRIPTION
1.1 - Pin Connections
STB4395
ADJPWR
NTXFLT
NSAWI
SHAPE
TXFLT
VPRF2
VPRF1
VNPA
VNRF
48
47
46
45
44
43
42
VRRF
SAWI
VND
VRD
VPD
NRF
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
NPRGEN
P RGCLK
P RGD
NTXEN
LOCK
I
NI
NQ
Q
EN
VNOSC
S YNCLK
VRO
VCOO
NVCOO
FLTRO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
VNIF
SAWO
NSAWO
VPIF
NIF2O
IF2O
DEC
IF2I
NIF2I
NDEC
VRIF
RSSI
VRI
VCOI
NVCOI
FLTRI
TQFP64
(from above )
RF
41
40
39
38
37
36
35
34
33
STB4395A
ADJPWR
NTXFLT
NSAWI
SHAPE
TXFLT
VPRF2
VPRF1
VNPA
VNRF
VRRF
SAWI
VND
VRD
VPD
NRF
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
NPRGEN
P RGCLK
P RGD
NTXEN
LOCK
I
REFIQ
Q
FN
EN
VNOSC
S YNCLK
VRO
VCOO
NVCOO
FLTRO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
48
47
46
45
44
43
42
VNIF
SAWO
NSAWO
VPIF
NIF2O
IF2O
DEC
IF2I
NIF2I
NDEC
VRIF
RSSI
VRI
VCOI
NVCOI
FLTRI
TQFP64
(from above )
RF
41
40
39
38
37
36
35
34
33
3/16
4395-02.EPS
NVCOS
FLTRS
VCOS
DISCI
VPO
VRS
DISCO
BRF3
BRF1
BRF2
SLTC
FSH
VPS1
VPS2
VPI
DO
4395-01.EPS
NVCOS
FLTRS
VCOS
DISCI
VPO
VRS
DISCO
BRF3
BRF1
BRF2
SLTC
FSH
VPS1
VPS2
VPI
DO
STB4395
1 - PIN DESCRIPTION
(continued)
1.2 - Pin List
Pin
1
2
3
4
5
6
7
8
9
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
4/16
Name
NPRGEN
PRGCLK
PRGD
NTXEN
LOCK
I
NI
NQ
Q
REFIQ
Q
FN
EN
VNOSC
SYNCLK
VRO
VCOO
NVCOO
FLTRO
VPO
DO
SLTC
FSH
FLTRS
VRS
VPS1
NVCOS
VCOS
VPS2
BRF3
BRF1
DISCI
DISCO
BRF2
VPI
FLTRI
NVCOI
VCOI
VRI
RSSI
VRIF
NDEC
NIF2I
IF2I
DEC
IF2O
NIF2O
VPIF
Description
Serial Data Enable
Serial Data Clock
Serial Data Input
Receive-Transmit Switch
VCO Lock Detect-all 3 PLL
I - Transmit Quadrature Input
I - Transmit Quadrature Input
Q-Transmit Quadrature Input
Q-Transmit Quadrature Input
IQ Reference Quadrature Transmit Input
Q-Transmit Quadrature Input
Forces Data Slicer Reference Time Constant To fast
Power Down all functions except buffer
Negative Power Supply all VCO ’s
Synthesizer Clock Input
PSU Regulated Negative Input for TX IF oscillator and pump circuit
TX oscillator tank circuit
TX Oscillator Tank Circuit
Loop Filter for TX PLL
Positive Battery Supply for TX oscillator
Receive Data Output
Slicer Time Constant Capacitor
Data Slicer Time Constant Setting
Loop Filter for channel PLL
Regulated Negative Supply for channel oscillator and pump circuit
Positive Battery Input for channel oscillator and pump circuit
Channel Oscillator Tank Input
Channel Oscillator Tank Input
Positive Battery Supply Input for channel oscillator and pump circuit
Bit Rate Filter3
Bit Rate Filter1
FM Discriminator Tank Circuit
FM Discriminator Tank Circuit
Bit Rate Filter 2
Positive Battery Supply for RXoscillator and pump circuit
Loop Filter for RX oscillator
RX Oscillator Tank Circuit
RX Oscillator Tank Circuit
Regulated Negative Supply for RX oscillator and pump circuit
RSSI OUTPUT
Regulated Negative Supply Output for RX sections
RX IF2 Decoupling
RX IF2 Filter Input
RX IF2 Filter Input
RX IF2 Decoupling
RX IF2 Filter Output
RX IF2 Filter Output
Positive Battery Supply Input for RX sections
Ext. Connection and
Suppl. Information
STB4395 only
STB4395 only
STB4395 only
STB4395A only
STB4395A only
STB4395A only
f = 14.4MHz A.C. coupled
C= 33nF
650 to 850MHz
650 to 850MHz
STB4395
1 - PIN DESCRIPTION
(continued)
1.2 - Pin List
(continued)
Pin
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Name
NSAWO
SAWO
VNIF
VNRF
SAWI
NSAWI
VRRF
VNPA
VPRF1
NRF
RF
VPRF2
ADJPWR
SHAPE
TXFLT
NTXFLT
VPD
VRD
VND
Description
RX First IF Amplifier Input
RX First IF Amplifier Input
Negative Battery Supply Input for RX sections
Negative Battery Supply Input for RF front end
RX First Mixer Output
RX First Mixer Output
Regulated Negative Supply for RF front end
Negative Supply for power amplifier
Positive Battery Supply for RF front end
Input LNA/Output PA
Input LNA/Ouput PA
Positive Battery Supply for RF front end
Transmit Power Adjust
Time Constant for PA on-off ramp
Bandpass Filter for TX RF
Bandpass Filter for TX RF
Positive Battery Supply for digital circuitry
Regulated Negative Supply for digital circuitry
Negative Battery Supply for digital circuitry
Ext. Connection and Suppl. Information
R = 8.5kΩ to V
RRF
C = 560pF
1.3 - Analog and Filter Pins
Pin
58
28
31
27
42, 39
29
30
33
16
21
6, 7
40, 41
43, 44
8, 9
7
56, 55
37
50, 51
47, 46
59
19
12
60, 61
35, 34
14, 15
25, 24
Symbol
ADJPWR
BRF1
BRF2
BRF3
DEC, NDEC
DISCI
DISCO
FLTRI
FLTRO
FLTRS
I, NI(1)
IF2I, NIF2I
IF2O, NIF2O
Q, NQ(1)
REFIQ
RF, NRF
RSSI
SAWI, NSAWI
SAWO, NSAWO
SHAPE
SLTC
SYNCLK
TXFLT/ NTXFLT
VCOI, NVCOI
VCOO, NVCOO
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
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
