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PDF STB4395 Data sheet ( Hoja de datos )
| Número de pieza | STB4395 | |
| Descripción | CT2 RECEIVER/TRANSMITTER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de STB4395 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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STB4395
CT2 RECEIVER/TRANSMITTER
. FULLY INTEGRATED DOUBLE SUPERHETE-
RODYNE RECEIVER
.www.DataSheet4U.comOPERATION 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
ADVANCE DATA
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.
The STB4395 exists in two versions:
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.
TQFP64
(Plastic Package)
ORDER CODE : STB4395 or STB4395A
April 1996
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice.
1/16
1 page  
STB4395
1 - PIN DESCRIPTION (continued)
1.2 - Pin List (continued)
Pin
46
47
48
49
50
51
52
www.DataSheet4U.co5m3
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 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
5 Page 
STB4395
8 - TRANSCEIVER SECTION (continued)
Dataslicer time constants
Symbol
Parameter
Slow
Fast
Hold Drift Rate 60mV < signal < 100mV
For 33nF capacitor at SLTC
Min.
Typ.
3*
130*
1
Max.
Unit
ms
µs
mV/ms
8.2 - Transmitter-Output Specification
www.DataSheet4U.coSmymbol
Parameter
POUT
Output Power into 300Ω balanced, high power mode
LO Rejection
Output Control Switch
TXFLT/NTXFLT output
Symbol
Parameter
Output Impedance
Load Impedance (external)
Voltage Out (channel frequency, application circuit of this D/S)
Voltage Out (channel frequency-300.8MHz, app. cct of this D/S)
Min.
13
25
Typ.
14
Max.
Unit
dBm
dBC
dB
Min.
Typ.
2
1.2
200
80
Max.
Units
kΩ
kΩ
mVPP
mVPP
8.3 - Synthesizer/Modulator/Channel Select Loop
8.3.1 - Synthesizer Phase Noise and Spurious
Phase noise and spurious are measured at the RF outputs RF / NRF in transmit mode, no RF SAW filter.
Phase Noise (Average)
Offset Frequency from carrier
±100kHz
±500kHz
±1MHz
±10MHz
Min.
Typ.
-106
-121
-127
-145
Max.
Unit
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Spurious
Offset Frequency from carrier
±50kHz
±100kHz
±200kHz
±200kHz to ±10MHz
±10MHz to ±100MHz
Min.
Typ.
-55
-63
-70
-75
-40
Max.
Unit
dBc
dBc
dBc
dBc
dBc
8.3.2 - Channel Select Loop
Symbol
Frequency
Frequency Steps
Parameter
Min.
Typ.
channel - 150.4
50
Max.
Unit
MHz
kHz
11/16
11 Page | ||
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| PDF Descargar | [ Datasheet STB4395.PDF ] | |
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