TBA121-5 SIEMENS | Alldatasheet

Document overview

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Technical content

Features

  • Outstanding limiting qualities
  • Few external components
  • Integrated de-emphasis resistor
  • Low harmonic distortion factor Semiconductor Group 91 06.94 TBA 121-5

Pin No. Function

1 Ground

2 Limiter amplifier operating point feedback

(RF decoupling of IF amplifier with appropriate capacitors is required!)

3 Limiter amplifier operating point feedback and low end

(RF decoupling of IF amplifier with appropriate capacitors is required!)

4 IF-amplifier output (emitter follower)

5 IF-amplifier output (emitter follower)

6 Demodulator input with high impedance input and internal 15 kΩ supply resistor

(if anLC circuit is used, theQ is determined by the damping resistance across pins 6 and 7)

7 Demodulator input with high impedance input and internal 15 kΩ supply resistor

(if anLC circuit is used, theQ is determined by the damping resistance across pins 6 and 7)

8 Connection for de-emphasis capacitor (a series resistor of 11 kΩ is integrated)

9 AF output of the SCART interface (emitter follower with short circuit limiter)

10 AF input 1 of the SCART interface (IF branch)

11 Rec/Pb switch input

12 AF input 2 of the SCART interface (SCART input)

13 Volume control

14 IF output (emitter follower)

16 IF input (limiter amplifier input; internal resistor between pin 16 and 3 typ. 800Ω )

Expanded Block Diagram, Part 1

Expanded Block Diagram, Part 2

TA = 0 to 70 ˚C Parameter Symbol Limit Values Unit min. max. Supply voltage VS 01 6 V IF-input voltage VI 16 rms 0 600 mVrms DC voltage DC voltage DC voltage DC voltage DC voltage DC voltage DC voltage DC voltage DC voltage DC voltage V11 V12 V13 V16 VREF VREF VS VS VS-2 VREF VS VS VS VREF V V V V V V V V V V DC current DC current DC current DC current I14 – 1 – 1 mA mA mA mA Junction temperature Tj 150 ˚C Storage temperature Tstg – 55 125 ˚C Thermal resistance (system-air) Rth SA 80 K/W Operating Range Supply voltage VS 10.5 15.75 V Frequency range f 0.1 12 MHz Ambient temperature in operation TA 07 0 ˚ C

TA = 0 to 70 ˚C;VS = 10.5 to 15.5 V; refer to test circuit Parameter Symbol Limit Values Unit Test Condition min. typ. max. Current consumption IS 21 29 37 mA Input voltage for limiting response VQ 9, 14 = – 3 dB) VI 16 rms 60 100 µV f I 16 = 5.5 MHz; Δ f = 30 kHz; f mod = 1 kHz SCART-output voltage VQ 9 500 650 mV V I 16 = 10 mV; Δ f = 30 kHz; f mod = 1kHz f I 16 = 5.5 MHz AF-output voltage VQ 14 450 650 mV V13 = 4.8 V; Δ f = 30 kHz; f mod = 1 kHz; f I 16 = 5.5 MHz DC component VQ 9 VQ 14 4.8 V V V I 16 = 10 mV; Δ f = 0 THD =THD min Total distortion factor THD 9 THD 14 1.1 Δ f = 30 kHz; V I 16 = 10 mV; f mod = 1 kHz f I 16 = 5.5 MHz V13 = 4.8 V AM suppression (test conditions for reference point) a AM9, 14 50 60 dB V I 16 = 500µV; m = 30%; f mod = 1 kHz; f I 16= 5.5 MHz; Δ f = 30 kHz; V I 16 = 10 mV Volume control range V14 80 dB V13 = 5-0 V Maximum SCART- input voltage VI 12 2 Vrms Gain between SCART input (pin 10) and AF output (pin 14) G SC 0d B V11 ≥ 8 V≤ 12 V V13 = 4.8 V Switching Voltage, Muting ON (AF OFF) OFF VS V V

Characteristics(cont’d) TA = 0 to 70 ˚C;VS = 10.5 to 15.5 V; refer to test circuit Parameter Symbol Limit Values Unit Test Condition min. typ. max. Design Notes Input resistance R I 6, 7 10 k Ω Output resistance R Q 9 100 Ω Output resistance R Q 14 200 Ω Input resistance R I 10, 12 20 k Ω Input impedance Z I 16 800 Ω Residual IF voltage VQ 9, 14 (IF) 10 mV Hum suppression VS/VQ 9, 14 (without de-emphasisC ) a qh 30 dB Δ V S = 500 mVrms f S = 100 Hz Crosstalk attenuation (test conditions for reference point) a 12-14 60 dB V 12 = 2 Vrms; RF mode: Δ f = 30 kHz; f mod = 1 kHz; f I 16 = 5.5 MHz V I 16 = 10 mV Attenuation IF MUTE a 14 80 dB f I 16 = 5.5 MHz; V13 = 4.8 V;V I 16 = 300 mV; f mod = 1 kHz; Δ f = 30 kHz; IF MUTE = ON; measured selectively at 1 kHz