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TELEFUNKEN Semiconductors
U2300B
VHF/ UHF-Tuner-IC
Description
This tuner IC requires a power supply of 12 V and per-
forms the function of three separate oscillators and
mixers, SAWF-driver, L.O.-output and tri-state band
switch. Applications are 12 V TV- and VCR-tuners.
Features
D Frequency range from 48 to 860 MHz
D Band A: balanced high impedance mixer input and
amplitude controlled oscillator
D Band B + C: balanced low impedance mixer input and
symmetrical oscillator
D Balanced L.O.-output for prescalers or PLL
D SAW filter driver with low impedance output
D Voltage regulator for stable operating characteristics
D ESD protection on all pins except oscillator pins and
RF-inputs
Benefits
D The integration of 3 bands allows to design economi-
cal 3-band tuners
Block Diagram
13
4 65 7
8 10 9 11
19 2
Osc. A
Osc. B
Osc. C
Voltage Stabiliser
Band Switch
L.O.
12
Mixer Output
SAW–Driver
27
28
17
18
14
Band A
25 24
Rev. A1: 16.10.1995
Band B
RF
Band C
23 22 26 21 20
Figure 1. Block diagram
16 15
13
95 10717
1 (8)

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U2300B
TELEFUNKEN Semiconductors
Pin Description
Osc A, base 1
GND (common) 2
Osc A, coll. 3
Osc B, base 4
Osc B, coll. 5
Osc B, coll. 6
Osc B, base 7
Osc C, base 8
Osc C, coll. 9
Osc C, coll. 10
Osc C, base 11
Band sw. 12
SAWF, out 13
SAWF, out 14
28 L.O. out
27 L.O. out
26 GND (RF)
25 RF in, A
24 RF in, A
23 RF in, B
22 RF in, B
21 RF in, C
20 RF in, C
19 VS
18 Mix out
17 Mix out
16 SAWF, inp.
15 SAWF, inp.
95 10886
Pin
1
2
3
4, 7
5, 6
8, 11
9, 10
12
13, 14
15, 16
17, 18
19
20, 21
22, 23
24, 25
26
27, 28
Symbol
Function
Osc A, base Oscillator band A, base
GND Ground, common
(common)
Osc A, coll. Oscillator band A, collector
Osc B, base Oscillator band B, bases
Osc B, coll. Oscillator band B, collectors
Osc C, base Oscillator band C, bases
Osc C, coll. Oscillator band C, collectors
Band sw. Tri-state band switch
SAWF, out SAW filter driver outputs
SAWF, inp. SAW filter driver inputs
Mix out Mixer outputs, open
collector
VS Supply voltage Vs
RF in, C RF inputs, band C
RF in, B RF inputs, band B
RF in, A RF inputs, band A
GND (RF) Ground, RF part
L.O. out L.O.-outputs
Ordering Information
Extended Type Number
U2300B-FLG3
Package
SO28
Remarks
Taped and reeled
Absolute Maximum Ratings
All voltages are referred to GND, Pin 2
Parameters
Supply voltage
Pin 19
RF inputs
Pin 20-25
IF outputs
Pin 17-18
Tri-state switch voltage
Pin 12
Junction temperature
Storage temperature
2 (8)
Symbol
Vs
Min.
ViDSW
Tjmax
Tstg
–40
Typ. Max. Unit
13.5 V
5.0 V
13.5 V
13.5 V
125 °C
125 °C
Rev. A1: 16.10.1995

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TELEFUNKEN Semiconductors
U2300B
Operating Range
All voltages are referred to GND, Pin 2
Parameters
Supply voltage
Ambient temperature
Thermal resistance
Test Conditions / Pins Symbol Min. Typ. Max. Unit
Pin 17-19
Vs
10.8
12
13.2
V
Tamb
–25
75 °C
Test conditions page 5,
RthJA
70
K/W
Package SO-28
Electrical Characteristics
Test conditions: Vs = 12 V, Tamb = 25°C, unless otherwise specified, reference point Pin 2,
referred to test circuit page 5
Parameters
Test Conditions / Pins
Supply voltage
Pin 17-19
Supply current
Pin 17-19
Band switch
Voltage Band A
Pin 12
Voltage Band B
Pin 12
Voltage Band C
Pin 12
Switching current
VSW = 5 V Pin 12
L.O.-output
L.O. level each output
RL = 50 Ohm Pin 27, 28
SAW filter driver fi = 36 MHz
Input impedance
Pin 15, 16
Output impedance
Pin 13, 14
Voltage gain
15, 16 13, 14
Band A
Input frequency range
Pin 24
Input impedance
Figure 3
Pin 24
Gain (note 4)
Pin I/P to O/P
Noise figure DSB (note 2)
Pin I/P to O/P
fiA = 50 MHz
fiA = 150 MHz
Input level for (note 3):
Each carrier
IM3 (interm. of 3rd order fiA = 71 MHz
Pin I/P
IM2 (interm. of 2nd order) fiA = 71 MHz
Pin I/P
Band B (note 1)
Input frequency range
Pin 22, 23
Input impedance
Figure 3 Pin 22, 23
Gain (note 4)
Pin I/P to O/P
Noise figure DSB (note 2)
Pin I/P to O/P
fiB = 200 MHZ
fiB = 450 MHz
Input level for (note 3)
Each carrier
IM3 (interm. of 3rd order) fiB = 300 MHz Pin I/P
Symbol
VS
IS
VSWA
VSWB
VSWC
ISW
PLO
ZiSAW
ZoSAW
GvSAW
fiA
S11A
GA
NF
NF
ViA
ViA
fiB
S11B
GB
NF
NF
ViB
Min.
10.8
0
1.6
3.4
–25
48
170
Typ.
12.0
42
0
2.0
4.0
450
70
18
29
11.5
12
–21
–21
33
9.5
10
–26
Max.
13.2
50
1.0
2.4
5.0
100
–17
170
470
Unit
V
mA
V
V
V
mA
dBm
Ohm
Ohm
dB
MHz
dB
dB
dB
dBm
dBm
MHz
dB
dB
dB
dBm
Rev. A1: 16.10.1995
3 (8)