Document
INTEGRATED CIRCUITS
DATA SHEET
TDA9845 TV and VTR stereo/dual sound processor with digital identification
Preliminary specification Supersedes data of January 1993 File under Integrated Circuits, IC02 1995 Mar 20
Philips Semiconductors
Philips Semiconductors
Preliminary specification
TV and VTR stereo/dual sound processor with digital identification
FEATURES • Supply voltage 5 to 8 V • Source selector • Stereo matrix • AF input for mono source • AF outputs for Main • LED operation mode indication (stereo and dual) • High identification reliability. QUICK REFERENCE DATA SYMBOL VP IP Vi(rms) PARAMETER supply voltage (pin 18) supply current (pin 18) nominal input signal voltage (Vi 1, Vi 2, Vi 3) (RMS value) nominal output signal voltage (RMS value) clipping level of the output signal voltages (RMS value) without LED current 54% modulation B/G L (only for Vi 1) Vo(rms) Vo(rms) 54% modulation THD ≤1.5% VP = 5 V VP = 8 V ILON Vi pil S/N(W) THD Tamb fident tident ON Vi tuner ∆fpil input current input voltage sensitivity of pilot frequency weighted signal-to-noise ratio total harmonic distortion operating ambient temperature range identification window width total identification time ON identification voltage sensitivity pull-in frequency range of pilot PLL fω = 10.008 MHz lower side upper side ORDERING INFORMATION TYPE NUMBER TDA9845 TDA9845T PACKAGE NAME DIP20 SO20 DESCRIPTION plastic dual in-line package; 20 leads (300 mil) plastic small outline package; 20 leads; body width 7.5 mm −296 302 − − STEREO DUAL LED ON unmodulated 1.4 2.4 − 5 66 − 0 2.2 2.3 0.35 − 1.6 2.65 − − 75 0.2 − − − − 28 − − − − − 250 500 500 − − − CONDITIONS MIN. 4.5 12 TYP. 5 13 GENERAL DESCRIPTION
TDA9845
The TDA9845 is a stereo/dual sound processor for TV and VTR sets. Its identification ensures safe operation by using internal digital PLL technique with extremely small bandwidth, synchronous detection and digital integration (switching time maximum 2.1 s; identification concerning the main functions).
MAX. 8.8 16.5 V
UNIT mA mV mV mV
V V mA mV dB % °C Hz Hz s dBµV Hz Hz
12 100 − 0.3 +70 2.2 2.3 2.1 − −296 302
“CCIR468-3”
VERSION SOT146-1 SOT163-1
1995 Mar 20
2
full pagewidth
Vi 3 250 mV RMS CD2 + 2.2 µF 50 k Ω 10 6 dB −6 dB AM 250 mV RMS MAIN 6 dB
stereo transmission
1995 Mar 20
CD1 10 nF 10 nF AM 3 dB 500 mV RMS 0 dB 5 kΩ 12 Vo 1 17 13 A/MONO L 10 k Ω 10 k Ω L/A/MONO 250 mV RMS 500 mV RMS 11 Vo 2 15 0 dB 5 kΩ 14 R/B 250 mV RMS mute
dual transmission
2.2 k Ω
2.2 µF
+
BLOCK DIAGRAMS
Vi 1
8
−3 dB
Philips Semiconductors
L+R , A 2
2.2 k Ω
15 kΩ
−6 dB
250 mV RMS (AM: 500 mV RMS)
35 kΩ
35 kΩ
2.2 µF
15 kΩ
Vi 2
9
+
LEDST 1 kΩ VP LEDDU
R, B
250 mV RMS DUAL bit DIGITAL PLL AND DEMODULATOR DIGITAL INTEGRATOR 274 Hz CONTROL LOGIC DIGITAL PLL DIGITAL INTEGRATOR 25 k Ω DIGITAL PLL AND DEMODULATOR 117 Hz STEREO bit 1 2 20
TDA9845
30 kΩ
47 pF
C1 C2 C3
TV and VTR stereo/dual sound processor with digital identification
3
25 k Ω OSCILLATOR Vref SUPPLY POWER-ON RESET 19 1/2 V P 10 MHz Cref + 100 µF/ 16 V XTAL C ref VP GND 7 18 16
V i pil
6
3.3 nF
2.5 mH
CDCL
5
100 nF
+
CAGC
3
10 µF
CLP
4
10 nF
MED644 - 1
Input and output levels are nominal values. They are related to the SCART norm. (AM: m = 0.54, FM: ∆f = ±27 kHz).
Preliminary specification
TDA9845
Fig.1 Block diagram of the bipolar TV/VTR-stereo decoder.
Vi 3 250 mV RMS CD1 10 nF 10 nF 13 17 5 kΩ 6 dB −6 dB AM 250 mV RMS MAIN 6 dB
stereo transmission
book, full pagewidth
CD2 + 2.2 µF 50 k Ω 10 500 mV RMS 12 Vo 1 L/A/MONO 250 mV RMS 500 mV RMS 11 Vo 2 15 0 dB 5 kΩ 14 mute
dual transmission
1995 Mar 20
AM 3 dB 0 dB A/MONO L 10 k Ω 10 k Ω R/B 250 mV RMS LEDST 1 kΩ VP LEDDU
2.2 k Ω
2.2 µF
+
Vi 1
8
−3 dB
Philips Semiconductors
L+R , A 2
2.2 k Ω
15 kΩ
−6 dB
250 mV RMS (AM: 500 mV RMS)
35 kΩ
35 kΩ
2.2 µF
15 kΩ
Vi 2
9
+
R, B
250 mV RMS DUAL bit DIGITAL PLL AND DEMODULATOR DIGITAL INTEGRATOR 274 Hz CONTROL LOGIC DIGITAL PLL DIGITAL INTEGRATOR 25 k Ω DIGITAL PLL AND DEMODULATOR 117 Hz STEREO bit 1 2 20
TDA9845
27 kΩ
180 pF
C1 C2 C3
TV and VTR stereo/dual sound processor with digital identification
4
25 k Ω OSCILLATOR Vref SUPPLY POWER-ON RESET 19 1/2 VP 10 MHz + 100 µF / 16 V XTAL C ref VP GND 7 18 16
V i pil
6
18 nF ±2%
4.7 mH ±5%
C DCL
5
100 nF
+
CAGC
3
10 µF
CLP
4
10 nF
MED645 - 1
Input and output levels are nominal values. They are related to the SCART norm. (AM: m = 0.54, FM: ∆f = ±27 kHz).
The components of the external LC band-pass filter have the following order-No.: Philips Germany only No: 431202017525 or Fastron Sdn. Bha., Malaysia type SMCC 472 J for L = 4.7 MHz (±5%) Philips Components No: 2222 429 71802, C = 1.8 nF (±2%).
Preliminary specification
TDA9845
Fig.2 Block diagram of the bipolar TV/VTR-stereo decoder with fixed coil (alignment-free).
Philips Semiconductors
Preliminary specification
TV and VTR stereo/dual sound processor with digital identification
PINNING SYMBOL C1 C2 CAGC CLP CDCL Vi p.