Philips TDA5744TS, TDA5745TS Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TDA5744; TDA5745

Low power mixers/oscillators for
hyperband tuners

Preliminary specification
File under Integrated Circuits, IC02

1998 Mar 09

Philips Semiconductors Preliminary specification

Low power mixers/oscillators for
hyperband tuners

FEATURES

• Mixers/oscillators for hyperband tuners

• Balanced mixer with a common emitter input for VHF

(single input)

• Balanced mixer with a common base input for UHF
(double input)

• 4-pin common emitter oscillator for VHF

• 4-pin common emitter oscillator for UHF

• Electronic band switch

• IF amplifier with a low output impedance to drive the
SAW filter directly (≈2kΩ load)

• Low power, low radiation and small size

• Pin compatible single-chip synthesizer mixer/oscillator

for Full Scale Tuners (FST) are available: TDA6404,
TDA6405 and TDA6405A.

QUICK REFERENCE DATA

TDA5744; TDA5745

APPLICATIONS

• Hyperband tuners for Europe using a 2-band
mixer/oscillator in a switched concept.

GENERAL DESCRIPTION

The TDA5744 and TDA5745 are 2-band mixers/oscillators
intended for VHF/UHF and hyperband tuners (see Fig.1).

The Integrated Circuits (ICs) include two double balanced
mixers and two oscillators, for the VHF and UHF band, and
an IF amplifier. With proper oscillator application and by
using a switchable inductor to split the VHF band into two
sub-bands (the full VHF/UHF and hyperband) the TV
bands can be covered. Two pins are available between
the mixer output and the IF amplifier input to enable IF
filtering for improved signal handling. Band selection is
made by band switch pin BS.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V
I

CC

T
T
f

i(RF)

CC

stg
amb

supply voltage operating 4.5 5 5.5 V
supply current − 58 − mA
IC storage temperature −40 − +150 °C
operating ambient temperature −20 − +85 °C
RF input frequency VHF band 45.25 − 399.25 MHz

UHF band 407.25 − 855.25 MHz

G

V

voltage gain VHF band − 27 − dB

UHF band − 38 − dB

F noise figure VHF band − 8 − dB

UHF band − 8.5 − dB

V

o

output voltage causing 1% cross
modulation in channel

VHF band − 119 − dBµV
UHF band − 118 − dBµV

ORDERING INFORMATION

TYPE

NUMBER

TDA5744TS;
TDA5745TS

NAME DESCRIPTION VERSION

SSOP24 plastic shrink small outline package; 24 leads; body width 5.3 mm SOT340-1

PACKAGE

1998 Mar 09 2

Philips Semiconductors Preliminary specification

Low power mixers/oscillators for
hyperband tuners

BLOCK DIAGRAM

handbook, full pagewidth

12 (13)

n.c.

11 (14)

n.c.

10 (15)

n.c.

8 (17)

n.c.

7 (18 )

n.c.

IFFIL2
IFFIL1

RFGND

VHFIN

6 (19)
5 (20)

4 (21)

3 (22)

VHF

STAGE

TDA5744

(TDA5745)

VHF

MIXER

DC

STABILIZER

IF

AMPLIFIER

VHF

OSCILLATOR

TDA5744; TDA5745

(12) 13

(11) 14
(10) 15

(9) 16

(4) 21
(3) 22
(2) 23
(1) 24

V

CC

IFOUT1
IFOUT2

GND

VHFOSCIB1
VHFOSCOC1
VHFOSCOC2
VHFOSCIB2

9 (16)

BS

UHFIN2
UHFIN1

The pin numbers in parenthesis represent the TDA5745.

2 (23)
1 (24)

ELECTRONIC

BAND

SWITCH

UHF

STAGE

UHF

MIXER

Fig.1 Block diagram.

UHF

OSCILLATOR

(8) 17
(7) 18
(6) 19
(5) 20

MGM466

UHFOSCIB1
UHFOSCOC1

UHFOSCOC2
UHFOSCIB2

1998 Mar 09 3

Philips Semiconductors Preliminary specification

Low power mixers/oscillators for
hyperband tuners

PINNING

SYMBOL

UHFIN1 1 24 UHF input 1
UHFIN2 2 23 UHF input 2
VHFIN 3 22 VHF input
RFGND 4 21 RF ground
IFFIL1 5 20 IF filter output 1
IFFIL2 6 19 IF filter output 2
n.c. 7 18 not connected
n.c. 8 17 not connected
BS 9 16 electronic band switch
n.c. 10 15 not connected
n.c. 11 14 not connected
n.c. 12 13 not connected
V

CC

IFOUT1 14 11 IF amplifier output 1
IFOUT2 15 10 IF amplifier output 2
GND 16 9 ground
UHFOSCIB1 17 8 UHF oscillator base input 1
UHFOSCOC1 18 7 UHF oscillator collector output 1
UHFOSCOC2 19 6 UHF oscillator collector output 2
UHFOSCIB2 20 5 UHF oscillator base input 2
VHFOSCIB1 21 4 VHF oscillator base input 1
VHFOSCOC1 22 3 VHF oscillator collector output 1
VHFOSCOC2 23 2 VHF oscillator collector output 2
VHFOSCIB2 24 1 VHF oscillator base input 2

TDA5744 TDA5745

PIN

DESCRIPTION

13 12 supply voltage

TDA5744; TDA5745

1998 Mar 09 4

Philips Semiconductors Preliminary specification

Low power mixers/oscillators for
hyperband tuners

handbook, halfpage

UHFIN1
UHFIN2

RFGND

VHFIN

IFFIL1
IFFIL2

n.c.
n.c.

BS
n.c.
n.c.
n.c.

1
2
3
4
5
6

TDA5744TS

7
8

9
10
11

MGM464

VHFOSCIB2

24
23

VHFOSCOC2
VHFOSCOC1

22
21

VHFOSCIB1

20

UHFOSCIB2

19

UHFOSCOC2
UHFOSCOC1

18

UHFOSCIB1

17

GND

16

IFOUT2

15

IFOUT1

14

V

1312

CC

handbook, halfpage

VHFOSCIB2
VHFOSCOC2
VHFOSCOC1

VHFOSCIB1

UHFOSCIB2
UHFOSCOC2
UHFOSCOC1

UHFOSCIB1

GND
IFOUT2
IFOUT1

V

CC

TDA5744; TDA5745

1
2
3
4
5
6

TDA5745TS

7
8

9
10
11

MGM465

24
23
22
21
20
19
18
17
16
15
14
1312

UHFIN1
UHFIN2
VHFIN
RFGND
IFFIL1
IFFIL2
n.c.
n.c.
BS
n.c.
n.c.
n.c.

Fig.2 Pin configuration for TDA5744TS.

Fig.3 Pin configuration for TDA5745TS.

1998 Mar 09 5

Philips Semiconductors Preliminary specification

Low power mixers/oscillators for

TDA5744; TDA5745

hyperband tuners

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER MIN. MAX. UNIT

I

O(n)

t

sc(max)

T

stg

T

amb

T

j

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS VALUE UNIT

R

th(j-a)

CHARACTERISTICS

=5V; T

V

CC

output current of each pin to ground:

for TDA5744; pins 1 to 6, 9 and 13 to 24 −−10 mA

for TDA5745; pins 1 to 12, 16 and 19 to 24 −−10 mA
maximum short-circuit time (all pins to VCC and all pins to GND and RFGND) − 10 s
IC storage temperature −40 +150 °C
operating ambient temperature −20 +85 °C
junction temperature − 150 °C

thermal resistance from junction to ambient in free air 119 K/W

=25°C; unless otherwise specified; measured in Fig.11.

amb

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supplies

V

CC

I

CC

V

sw(VHF)

V

sw(UHF)

I

sw(VHF)

I

sw(UHF)

supply voltage 4.5 5 5.5 V
supply current − 58 65 mA
VHF band switching voltage 0 − 2V
UHF band switching voltage 3 − V

CC

V
VHF band switching current −−2µA
UHF band switching current V

sw(UHF)

=5V − 4.5 10 µA

IF amplifier

S

22

output reflection coefficient magnitude −−12.5 − dB

phase − 1.4 − deg

R

s

L

s

real part of Zo=Rs+jωL
imaginary part of

Zo=Rs+jωL

s

s

− 81 −Ω

− 9.5 − nH

VHF mixer (including IF amplifier)

f

i(RF)

F noise figure f

g

os

RF input frequency picture carrier frequency 45.25 − 399.25 MHz

= 50 MHz; see Figs 8 and 9 − 79dB

RF

f

= 150 MHz; see Figs 8 and 9 − 810dB

RF

f

= 300 MHz − 911dB

RF

optimum source
conductance for noise figure

fRF=50MHz − 0.7 − mS
f

= 150 MHz − 0.9 − mS

RF

f

= 300 MHz − 1.5 − mS

RF

1998 Mar 09 6