tda8052t, Ham- CB Radio, Karty katalogowe
[ Pobierz całość w formacie PDF ]
INTEGRATED CIRCUITS
DATA SHEET
TDA8052T
Quadrature demodulator
Objective specification
File under Integrated Circuits, IC02
1998 Jan 23
Philips Semiconductors
Objective specification
Quadrature demodulator
TDA8052T
FEATURES
GENERAL DESCRIPTION
The TDA8052T is a monolitic bipolar IC dedicated to
BPSK and QPSK demodulation. It is designed to be used
together with the TDA8043 as part of a complete
BPSK/QPSK satellite demodulator and decoder. The
bandwidth of the TDA8052T allows symbol rates up to
45 Msymbols/s.
It includes a low noise IF gain controlled amplifier, two
matched mixers, a symmetrical oscillator, a 0
˚
/ 90
˚
phase
shifter, two low pass filters and two matched baseband
amplifiers.
The high input sensitivity makes interfacing with various
sources easy. The input sensitivity can be adjusted by
means of an internal AGC amplifier.
The oscillator frequency can be set either by the appropri-
ate external LC tank circuit. The internal high precision
wideband phase shifter provides two oscillator signals
which are 90 degrees out of phase to drive the mixers.
.
·
Wide input frequency range (350 MHz to 650 MHz)
·
On IC high precision 0
˚
and 90
˚
phase shifter
·
5 V supply voltage
·
Internal voltage reference
·
Suitable for symbol rate up to 45 Msymbols/s
·
Nominal overall conversion gain (from IF input to I and
Q outputs) adjustable from 42 dB to13 dB.
·
Low noise AGC amplifier with 21 dB gain control range
·
30 MHz 1 dB bandwidth output buffers
APPLICATIONS
·
BPSK and QPSK demodulation
·
Professional and consumer satellite decoders
·
Data communication system
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
V
CC
supply voltage
4.75 5.0
5.25 V
I
CC
supply current
V
CC
= 5.0 V
-
51
-
mA
V
i(RF)
Operating input level
-
57
-
dB
m
V
f
i(RF)
RF input signal frequency range
350
-
650
MHz
V
oIQ(p-p)
I and Q output amplitude (peak to peak value)
-
0.8
-
V
D
E
F(
I-Q
)
Phase matching error between I and Q
channel
-
0.7
2
deg.
D
E
G(I-Q
)
Gain matching error between I and Q channel
-
0.15 0.8
dB
D
G
tilt
Gain flatness over f
IF
= 30MHz
-
0.3
0.5
dB
V
o(CLIP)(p-p)
Peak to peak output clipping voltage
1.6
-
-
V
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA8052T
SO16 plastic shrink small outline package; 16 leads; body width 3.9 mm
SOT109-1
1998 Jan 23
2
Philips Semiconductors
Objective specification
Quadrature demodulator
TDA8052T
BLOCK DIAGRAM
V
AGC
1
Voltage
ref
16
Vcc
2
I
out
2
Amp
I
15
OSC
dis
GND
1
3
14
OSC
A
RF
inA
4
13
OSC
B
0˚
Amp
90˚
RF
inB
5
12
GND
2
V
cc
1
6
11
NC
Q
out
7
Q
10
NC
Amp
GND
2
8
9
Vcc
2
TDA8052T
Fig.1
Block diagram
1998 Jan 23
3
Philips Semiconductors
Objective specification
Quadrature demodulator
TDA8052T
PINNING
SYMBOL
PIN
DESCRIPTION
V
AGC
1
gain control input voltage
I
out
2
I channel amplifier output
GND1
3
ground
V
AGC
1
16
Vcc
2
RF
IN-A
4
IF input A
I
out
2
15
Osc
dis
RF
IN-B
5
IF input B
GND
1
3
14
Osc
A
V
CC1
6
supply voltage
RF
IN-A
4
13
Q
out
7
Q channel amplifier output
Osc
B
TDA8052T
GND2
8
ground
RF
IN-B
5
12
GND
2
V
CC2
9
supply voltage
Vcc
1
6
11
NC
n.c.
10
not connected
Q
out
7
10
NC
n.c.
11
not connected
GND
2
8
9
Vcc
2
GND2
12
ground
Osc
A
13
oscillator tank circuit A
Osc
B
14
oscillator tank circuit B
Osc
dis
15
oscillator disable
V
CC2
16
supply voltage
Fig.2 Pin configuration for TDA8052T.
1998 Jan 23
4
Philips Semiconductors
Objective specification
Quadrature demodulator
TDA8052T
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
CC
supply voltage
-
0.3
6.0
V
V
i
Voltage on all pins
-
0.3
V
CC
V
P
tot
total power dissipation
-
tbf
mW
T
stg
IC storage temperature
-
55
+150
°
C
T
j
junction temperature
-
+150
°
C
T
amb
operating ambient temperature
0
+70
°
C
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
VALUE
UNIT
R
th j-a
thermal resistance from junction to ambient in free air
(Typical value)
115
K/W
HANDLING
All pins withstand the ESD test in accordance with “UZW-BO/FQ-A302 (human body model)” and with
“UZW-BO/FQ-B302 (machine model)”.
1998 Jan 23
5
[ Pobierz całość w formacie PDF ]