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INTEGRATED CIRCUITS
DATA SH EET
TDA1575T
FM front end circuit for CENELEC
EN 55020 applications
Preliminary specification
File under Integrated Circuits, IC01
April 1993
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Philips Semiconductors Preliminary specification
FM front end circuit for CENELEC EN
TDA1575T
55020 applications
FEATURES
• Bipolar integrated FM front end circuit, designed for use
in car radios and home receivers
• Fulfills CENELEC EN 55020 requirements
• Radio frequency range of 76 to 90 MHz (Japan) or 87.5
to 108 MHz (Europe, USA)
• Low noise oscillator, buffered oscillator output
• Double balanced mixer
• Internal buffered mixer driving
• Linear IF amplifier, suitable for ceramic IF filters
• Regulated reference voltage.
QUICK REFERENCE DATA
SYMBOL PARAMETER MIN. TYP. MAX. UNIT
V
P
I
P
V
REF
Z
I
NF noise figure of mixer − 9 − dB
EMF1 3rd order intermodulation − 115 − dBµV
V
OSC
THD total harmonic distortion −−15 − dBC
G
v
NF IF noise figure − 6.5 − dB
Z
I
Z
O
EMF2 AGC wideband threshold (RMS value) − 17 − mV
supply voltage 7 8.5 10 V
supply current, without mixer − 23 − mA
reference voltage output − 4.2 − V
mixer input impedance − 14 −Ω
oscillator buffer output signal (RMS value) 75 −−mV
IF gain − 30 − dB
IF input impedance − 300 −Ω
IF output impedance − 300 −Ω
ORDERING INFORMATION
EXTENDED
TYPE NUMBER
TDA1575T 16 mini-pack plastic SOT109A
Note
1. SOT109-1; 1996 August 29.
April 1993 2
PACKAGE
PINS PIN POSITION MATERIAL CODE
(1)
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Philips Semiconductors Preliminary specification
FM front end circuit for CENELEC EN
55020 applications
TDA1575T
Coils TOKO
L1: MC-108 514 HNE-150023S14; L = 78 nH, N = 4 turns
L2: MC-111 E516 HNS-200057; L = 80 nH
L3: A119 ACS-17114 FTT
April 1993 3
Fig.1 Block diagram and test circuit.
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Philips Semiconductors Preliminary specification
FM front end circuit for CENELEC EN
55020 applications
PINNING
SYMBOL PIN DESCRIPTION
MIXI1 1 RF input 1 to mixer
MIXI2 2 RF input 2 to mixer
AGCI 3 HF input to automatic gain control
GND 4 ground (0 V)
V
REF
OSCO 6 oscillator output
OSCI1 7 oscillator input 1
OSCI2 8 oscillator input 2
LO 9 buffered oscillator output
IFO 10 linear FM IF output
IFI1 11 FM IF input 1
IFI2 12 FM IF input 2
V
P
MIXO1 14 mixer output 1
MIXO2 15 mixer output 2
AGCO 16 automatic gain control output
5 reference voltage output
13 supply voltage (+8.5 V)
TDA1575T
Fig.2 Pin configuration.
LIMITING VALUES
Limiting values in accordance with the Absolute Maximum System (IEC 134).
SYMBOL PARAMETER MIN. MAX. UNIT
V
V
P
T
T
V
P
14, 15
tot
stg
amb
ESD
supply voltage (pin 13) 0 12 V
voltage at mixer output 0 V
P
V
total power dissipation 0 380 mW
storage temperature range −55 +150 °C
operating ambient temperature range −40 +85 °C
electrostatic handling (see note 1)
all pins except 3 and 10 −±2000 V
pin 3 − +2000 V
−−1000 V
pin 10 − +1500 V
−−2000 V
Note to the limiting values
1. Equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.
April 1993 4
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Philips Semiconductors Preliminary specification
FM front end circuit for CENELEC EN
TDA1575T
55020 applications
CHARACTERISTICS
= 8.5 V and T
V
P
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
I
P
V
REF
Mixer; EMF1 = 98 MHz
I
14 + 15
V
1, 2
Z
1, 2
V
14, 15
C
14, 15
G
P
EMF1
IP3
NF noise figure − 9 − dB
= +25°C, measurements taken in Fig.1 with f0 = 98 MHz (EMF1) unless otherwise specified.
amb
supply voltage (pin 13) 7 8.5 10 V
supply current without mixer 16 23 30 mA
reference voltage (pin 5) I5 ≤ 3 mA 3.9 4.2 4.4 V
mixer supply current (pins 14 and 15) − 4 − mA
DC voltage input (pins 1 and 2) − 1 − V
input impedance − 14 −Ω
DC output voltage (pins 14 and 15) 4 − 10 V
output capacitance − 13 − pF
conversion power gain note 1 − 14 − dB
3rd order intercept point − 115 − dBµV
total noise figure including
− 11 − dB
transforming network
Oscillator; f
V
7, 8
V
6
∆f residual FM at pin 6 f = 300 to 15000 Hz;
= 108.7 MHz
OSC
DC input voltage (pins 7 and 8) − 1.3 − V
DC output voltage (pin 6) − 2.0 − V
− 2.2 − Hz
de-emphasis 50 µs
Oscillator buffered output (pin 9)
V
O
V
9
R
9
output signal (RMS value) RL= 500 Ω; CL= 2 pF 75 −−mV
DC output voltage − 6 − V
DC output resistor − 950 −Ω
THD total harmonic distortion −−15 − dBC
f
S
spurious frequencies EMF1 = 2 V;
−−37 − dBC
RS= 50 Ω;
f
= 108.7 MHz
OSC
Automatic gain control (AGC); f
R
3
C
3
V
16
I
16
input resistance (pin 3) − 4 − kΩ
input capacitance − 3 − pF
AGC output swing (DC) Figs 3 and 4 0.5 − VP − 0.3 V
output current at I3 = 0 V16 = 1/2 V
output current at U
EMF2 threshold (RMS value) I
= 98 MHz
i
P
= 2 V V16 = 7 to 10 V 2 − 5mA
3
= 0; V16 = 1/2 VP;
16
−25 −50 −150 µA
− 17 − mV
Figs 4 and 5
April 1993 5