STB4395
CT2 RECEIVER/TRANSMITTER
April 1996
ADVANCE DATA
TQFP64
(Plastic Package)
ORDER CODE : STB4395 or STB4395A
.
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
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice.
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 i s t s in
t wo v er si o 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.
1/16
CONTENT
Page
1
PIN DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
1.1
PIN CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
1.2
PIN LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
1.3
ANALOG AND FILTER PINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
1.4
DIGITAL, SIGNAL AND CONTROL PINS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
1.5
POWER SUPPLY PINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
2
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
3
FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
3.1
RECEIVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
3.2
TRANSMITTER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
3.3
CHANNEL SELECT CONTROL LOGIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
4
ABSOLUTE MAXIMUM RATINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
5
POWER SUPPLIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
5.1
SUPPLIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
5.2
GROUND PLANE CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
6
ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
7
TIMING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
7.1
TURN ON-OFF TIMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
7.2
CHANNEL SELECT TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
8
TRANSCEIVER SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
8.1
RECEIVER-INPUT SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
8.2
TRANSMITTER OUTPUT SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
8.3
SYNTHESIZER/MODULATOR/CHANNEL SELECT LOOP . . . . . . . . . . . . . . . . . . . . . .
11
8.3.1
Synthesizer phase noise and spurious . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
8.3.2
Channel select loop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
8.3.3
Channel frequency setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
8.4
SYSTEM CLOCK INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
8.5
RECEIVER -RF INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
8.6
DIGITAL INPUT BUFFERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
8.7
DIGITAL OUTPUT BUFFERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
8.8
RECEIVER- FSH TRI STATE INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
8.9
RECEIVER- RSSI OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
8.10
POWER DOWN BUFFER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
8.11
TRANSMITTER - DATA INPUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
8.11.1
STB4395A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
8.11.2
STB4395 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
9
APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
9.1
TYPICAL DC CONNECTION SCHEMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
9.1.1
Internal regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
9.1.2
External regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
9.2
APPLICATION CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
9.2.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
9.2.2
Application example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
10
PACKAGE MECHANICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
STB4395
2/16
1 - PIN DESCRIPTION
1.1 - Pin Connections
12
13
14
15
16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
38
39
40
41
42
43
44
45
46
47
33
34
35
36
37
7
8
9
10
11
2
3
4
5
6
1
VNIF
VRIF
NDEC
NIF2I
IF2I
DEC
IF2O
NIF2O
VPIF
NSAWO
SAWO
FLTRI
NVCOI
VCOI
VRI
RS SI
S YNCLK
VRO
VCOO
NVCOO
FLTRO
NI
NQ
Q
EN
VNOSC
P RGCLK
P RGD
NTXEN
LOCK
I
NPRGEN
VND
NRF
RF
VPRF2
ADJPWR
SHAPE
TXFLT
NTXFLT
NSAWI
VPD
VRD
VNRF
SAWI
VRRF
VNPA
VPRF1
BRF1
DISCI
DISCO
BRF2
VPI
VPS1
NVCOS
VCOS
VPS2
BRF3
DO
SLTC
FSH
FLTRS
VRS
VPO
TQFP64
(from a bove )
4395-01.EPS
STB4395
12
13
14
15
16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
38
39
40
41
42
43
44
45
46
47
33
34
35
36
37
7
8
9
10
11
2
3
4
5
6
1
VNIF
VRIF
NDEC
NIF2I
IF2I
DEC
IF2O
NIF2O
VPIF
NSAWO
SAWO
FLTRI
NVCOI
VCOI
VRI
RS SI
S YNCLK
VRO
VCOO
NVCOO
FLTRO
REFIQ
Q
FN
EN
VNOSC
P RGCLK
P RGD
NTXEN
LOCK
I
NPRGEN
VND
NRF
RF
VPRF2
ADJPWR
SHAPE
TXFLT
NTXFLT
NSAWI
VPD
VRD
VNRF
SAWI
VRRF
VNPA
VPRF1
BRF1
DISCI
DISCO
BRF2
VPI
VPS1
NVCOS
VCOS
VPS2
BRF3
DO
SLTC
FSH
FLTRS
VRS
VPO
TQFP64
(from a bove )
4395-02.EPS
STB4395A
STB4395
3/16
1 - PIN DESCRIPTION (continued)
1.2 - Pin List
Pin
Name
Description
Ext. Connection and
Suppl. Information
1
NPRGEN
Serial Data Enable
2
PRGCLK
Serial Data Clock
3
PRGD
Serial Data Input
4
NTXEN
Receive-Transmit Switch
5
LOCK
VCO Lock Detect-all 3 PLL
6
I
I - Transmit Quadrature Input
7
NI
I - Transmit Quadrature Input
STB4395 only
8
NQ
Q-Transmit Quadrature Input
STB4395 only
9
Q
Q-Transmit Quadrature Input
STB4395 only
7
REFIQ
IQ Reference Quadrature Transmit Input
STB4395A only
8
Q
Q-Transmit Quadrature Input
STB4395A only
9
FN
Forces Data Slicer Reference Time Constant To fast
STB4395A only
10
EN
Power Down all functions except buffer
11
VNOSC
Negative Power Supply all VCO 's
12
SYNCLK
Synthesizer Clock Input
f = 14.4MHz A.C. coupled
13
VRO
PSU Regulated Negative Input for TX IF oscillator and pump circuit
14
VCOO
TX oscillator tank circuit
15
NVCOO
TX Oscillator Tank Circuit
16
FLTRO
Loop Filter for TX PLL
17
VPO
Positive Battery Supply for TX oscillator
18
DO
Receive Data Output
19
SLTC
Slicer Time Constant Capacitor
C= 33nF
20
FSH
Data Slicer Time Constant Setting
21
FLTRS
Loop Filter for channel PLL
22
VRS
Regulated Negative Supply for channel oscillator and pump circuit
23
VPS1
Positive Battery Input for channel oscillator and pump circuit
24
NVCOS
Channel Oscillator Tank Input
650 to 850MHz
25
VCOS
Channel Oscillator Tank Input
650 to 850MHz
26
VPS2
Positive Battery Supply Input for channel oscillator and pump circuit
27
BRF3
Bit Rate Filter3
28
BRF1
Bit Rate Filter1
29
DISCI
FM Discriminator Tank Circuit
30
DISCO
FM Discriminator Tank Circuit
31
BRF2
Bit Rate Filter 2
32
VPI
Positive Battery Supply for RXoscillator and pump circuit
33
FLTRI
Loop Filter for RX oscillator
34
NVCOI
RX Oscillator Tank Circuit
35
VCOI
RX Oscillator Tank Circuit
36
VRI
Regulated Negative Supply for RX oscillator and pump circuit
37
RSSI
RSSI OUTPUT
38
VRIF
Regulated Negative Supply Output for RX sections
39
NDEC
RX IF2 Decoupling
40
NIF2I
RX IF2 Filter Input
41
IF2I
RX IF2 Filter Input
42
DEC
RX IF2 Decoupling
43
IF2O
RX IF2 Filter Output
44
NIF2O
RX IF2 Filter Output
45
VPIF
Positive Battery Supply Input for RX sections
STB4395
4/16
1 - PIN DESCRIPTION (continued)
1.2 - Pin List (continued)
Pin
Name
Description
Ext. Connection and Suppl. Information
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
R = 8.5k
to V
RRF
59
SHAPE
Time Constant for PA on-off ramp
C = 560pF
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
1.3 - Analog and Filter Pins
Pin
Symbol
Description
58
ADJPWR
Transmitter Output Power Adjust
28
BRF1
Bit Rate Filter1
31
BRF2
Bit Rate Filter 2
27
BRF3
Bit Rate Filter 3
42, 39
DEC, NDEC
RX IF2 Amplifier Decoupling
29
DISCI
FM Discriminator Tank Circuit
30
DISCO
FM Discriminator Tank Circuit
33
FLTRI
Loop Filter for RX PLL
16
FLTRO
Loop Filter for TX PLL
21
FLTRS
Loop Filter for Channel PLL
6, 7
I, NI(1)
Transmit Quadrature Inputs ((1)STB4395 only)
40, 41
IF2I, NIF2I
Inputs from 2nd IF Filter
43, 44
IF2O, NIF2O
Outputs to 2nd IF Filter
8, 9
Q, NQ(1)
Q-Transmit Quadrature Input ((1)STB4395 only)
7
REFIQ
IQ Reference Quadrature Transmit Input (STB4395A only)
56, 55
RF, NRF
Input RX LNA/Ouput TX PA
37
RSSI
Received Signal Strength Indicator Output
50, 51
SAWI, NSAWI
First Mixer Output
47, 46
SAWO, NSAWO
First IF Amplifier Input
59
SHAPE
Time Constant for PA on-off Ramp
19
SLTC
Slicer Time Constant Capacitor
12
SYNCLK
Synthesizer Clock Input 14.4MHz
60, 61
TXFLT/ NTXFLT
Bandpass Filter for TX RF
35, 34
VCOI, NVCOI
Tank Circuit for 152.1MHz RX Oscillator
14, 15
VCOO, NVCOO
Tank Circuit for 300.8MHz TX Oscillator
25, 24
VCOS, NVCOS
Tank Circuit for 650 to 850MHz Channel Oscillator
STB4395
5/16
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