Philips TDA9811-V4, TDA9811-V3 Datasheet

DATA SH EET

Product speciﬁcation Supersedes data of 1995 Oct 03 File under Integrated Circuits, IC02

1998 Feb 09

INTEGRATED CIRCUITS

TDA9811

Multistandard VIF-PLL with QSS-IF and AM demodulator

1998 Feb 09 2

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and AM demodulator

TDA9811

FEATURES

• 5 V supply voltage

• Two switched VIF inputs, gain controlled wide band

VIF-amplifier (AC-coupled)

• True synchronous demodulation with active carrier regeneration (very linear demodulation, good intermodulation figures, reduced harmonics, excellent pulse response)

• Robustness for over-modulation better than 105% due to gated phase detector at L/L accent standard

• VCO frequency switchable between L and L accent (alignment external) picture carrier frequency

• Separate video amplifier for sound trap buffering with high video bandwidth

• VIF-AGC detector for gain control, operating as peak sync detector for B/G and peak white detector for L (optional external AGC); signal controlled reaction time for L

• Tuner AGC with adjustable takeover point (TOP)

• AFC detector without extra reference circuit

• SIF input for single reference QSS mode (PLL

controlled); SIF AGC detector for gain controlled SIF amplifier; single reference QSS mixer able to operate in high performance single reference QSS mode

• AM demodulator without extra reference circuit

• AM mute (especially for NICAM)

• Stabilizer circuit for ripple rejection and to achieve

constant output signals

• ESD protection for all pins.

GENERAL DESCRIPTION

The TDA9811 is an integrated circuit for multistandard vision IF signal processing and sound AM, with single reference QSS-IF in TV and VCR sets.

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA9811 SDIP32 plastic shrink dual in-line package; 32 leads (400 mil) SOT232-1

1998 Feb 09 3

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and AM demodulator

TDA9811

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

supply voltage 4.5 5 5.5 V

supply current 93 109 125 mA

i VIF(rms)

vision IF input signal voltage sensitivity (RMS value)

−1 dB video at output − 60 100 µV

o CVBS(p-p)

CVBS output signal voltage (peak-to-peak value)

1.7 2.0 2.3 V

−3

−3 dB video bandwidth on pin CVBS B/G and L standard;

< 20 pF; RL> 1kΩ; AC load

78−MHz

S/N (W) weighted signal-to-noise ratio for video 56 60 − dB IM

α1.1

intermodulation attenuation at ‘blue’ f = 1.1 MHz 58 64 − dB

α3.3

intermodulation attenuation at ‘blue’ f = 3.3 MHz 58 64 − dB

H(sup)

suppression of harmonics in video signal

35 40 − dB

i SIF(rms)

sound IF input signal voltage sensitivity (RMS value)

−3 dB at intercarrier output − 30 70 µV

o(rms)

audio output signal voltage (RMS value)

L standard; 54% modulation − 0.5 − V

THD total harmonic distortion L standard; 54% modulation − 0.5 1.0 % S/N (W) weighted signal-to-noise ratio L standard; 54% modulation 47 53 − dB

1998 Feb 09 4

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and

AM demodulator

TDA9811

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BLOCK DIAGRAM

Fig.1 Block diagram.

ook, full pagewidth

SINGLE REFERENCE

MIXER AND

AM DEMODULATOR

VCO TWD

AFC DETECTOR

TUNER AND VIF-AGC

VIF input switch

FPLL

VIDEO DEMODULATOR

AND AMPLIFIER

SIF

AMPLIFIER

SIF-AGC

INTERNAL VOLTAGE

STABILIZER

VIF AMPLIFIER

AND

INPUT SWITCH

SIF

VIFB

VIFA

TDA9811

29 27 26 9 8

2324257192830 63

5 4

2 1 32 31

5 V

VP1/2

SAGC

standard

switch

13 14

AF AMPLIFIER

AND SWITCH

AF/AM

n.c. n.c.

1811

n.c.16n.c.15n.c.

VIDEO

BUFFER

CVBS

2 V (p-p)

video

1 V (p-p)

AFC

2 x f

PC tuner AGC

loop filter

TOP

VAGC

MHA046

mute switch, AM

(2nd SIF)

o QSS

L/L accent

switch

i(vid)

1998 Feb 09 5

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and AM demodulator

TDA9811

PINNING

SYMBOL PIN DESCRIPTION

i VIF1

1 VIF differential input signal voltage 1

i VIF2

2 VIF differential input signal voltage 2

3 black level detector

i VIF3

4 VIF differential input signal voltage 3

i VIF4

5 VIF differential input signal voltage 4 TADJ 6 tuner AGC takeover adjust (TOP) T

PLL

7 PLL loop ﬁlter C

SAGC

8 SIF AGC capacitor STD 9 standard switch V

o CVBS

10 CVBS output signal voltage LSWI 11 L/L accent switch V

oAF

12 AM audio voltage frequency output n.c. 13 not connected n.c. 14 not connected n.c. 15 not connected n.c. 16 not connected MUTE 17 AM mute n.c. 18 not connected TAGC 19 tuner AGC output V

o QSS

20 single reference QSS output voltage V

o(vid)

21 composite video output voltage V

i(vid)

22 video buffer input voltage AFC 23 AFC output VCO1 24 VCO1 reference circuit for 2f

VCO2 25 VCO2 reference circuit for 2f

ref

261⁄2VP reference capacitor GND 27 ground C

VAGC

28 VIF-AGC capacitor V

29 supply voltage INSWI 30 VIF input switch V

i SIF1

31 SIF differential input signal voltage 1 V

i SIF2

32 SIF differential input signal voltage 2

Fig.2 Pin configuration.

handbook, halfpage

TDA9811

MHA047

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

V V

TADJ

STD

LSWI

n.c.

V V

V C

GND

INSWI

VCO2 VCO1 AFC

V V V

TAGC n.c.

o AF

o CVBS

SAGC

PLL

i VIF2

i VIF1

V V

i VIF4

i VIF3

i SIF1

i SIF2

VAGC

ref

MUTE

o QSS

o(vid)

i(vid)

1998 Feb 09 6

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and AM demodulator

TDA9811

FUNCTIONAL DESCRIPTION

The integrated circuit comprises the functional blocks as shown in Fig.1:

• Vision IF amplifier and input switch

• Tuner and VIF-AGC

• Frequency Phase Locked Loop detector (FPLL)

• VCO, Travelling Wave Divider (TWD) and AFC

• Video demodulator and amplifier

• Video buffer

• SIF amplifier and AGC

• Single reference QSS mixer

• AM demodulator

• Internal voltage stabilizer and

⁄2VP-reference.

Vision IF ampliﬁer and input switch

The vision IF amplifier consists of three AC-coupled differential amplifier stages. Each differential stage comprises a feedback network controlled by emitter degeneration. The first differential stage is extended by two pairs of emitter followers to provide two IF input channels. The VIF input can be selected by pin 30.

Tuner and VIF-AGC

The AGC capacitor voltage is transferred to an internal IF control signal, and is fed to the tuner AGC to generate the tuner AGC output current (open-collector output). The tuner AGC takeover point can be adjusted. This allows the tuner and the SAW filter to be matched to achieve the optimum IF input level.

The AGC detector charges/discharges the AGC capacitor to the required voltage for setting of VIF and tuner gain in order to keep the video signal at a constant level. Therefore for negative video modulation the sync level and for positive video modulation the peak white level of the video signal is detected. In order to reduce the reaction time for positive modulation, where a very large time constant is needed, an additional level detector increases the discharging current of the AGC capacitor (fast mode) in the event of a decreasing VIF amplitude step. The additional level information is given by the black level detector voltage.

Frequency Phase Locked Loop detector (FPLL)

The VIF-amplifier output signal is fed into a frequency detector and into a phase detector via a limiting amplifier. During acquisition the frequency detector produces a DC current proportional to the frequency difference between

the input and the VCO signal. After frequency lock-in the phase detector produces a DC current proportional to the phase difference between the VCO and the input signal. The DC current of either frequency detector or phase detector is converted into a DC voltage via the loop filter, which controls the VCO frequency. In the event of positive modulated signals the phase detector is gated by composite sync in order to avoid signal distortion for overmodulated VIF signals.

VCO, Travelling Wave Divider (TWD) and AFC

The VCO operates with a resonance circuit (with L and C in parallel) at double the PC frequency. The VCO is controlled by two integrated variable capacitors. The control voltage required to tune the VCO from its free-running frequency to actually double the PC frequency is generated by the frequency-phase detector (FPLL) and fed via the loop filter to the first variable capacitor. This control voltage is amplified and additionally converted into a current which represents the AFC output signal. The VCO centre frequency can be decreased (required for L accent standard) by activating an additional internal capacitor. This is achieved by using the L accent switch. In this event the second variable capacitor can be controlled by a variable resistor at the L accent switch for setting the VCO centre frequency to the required L accent value. At centre frequency the AFC output current is equal to zero.

The oscillator signal is divided-by-two with a TWD which generates two differential output signals with a 90 degree phase difference independent of the frequency.

Video demodulator and ampliﬁer

The video demodulator is realized by a multiplier which is designed for low distortion and large bandwidth. The vision IF input signal is multiplied with the ‘in phase’ signal of the travelling wave divider output. In the demodulator stage the video signal polarity can be switched in accordance with the TV standard.

The demodulator output signal is fed via an integrated low-pass filter for attenuation of the carrier harmonics to the video amplifier. The video amplifier is realized by an operational amplifier with internal feedback and high bandwidth. A low-pass filter is integrated to achieve an attenuation of the carrier harmonics for B/G and L standard. The standard dependent level shift in this stage delivers the same sync level for positive and negative modulation. The video output signal is 1 V (p-p) for nominal vision IF modulation.

1998 Feb 09 7

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and AM demodulator

TDA9811

Video buffer

For an easy adaption of the sound traps an operational amplifier with internal feedback is used in the event of B/G and L standard. This amplifier is featured with a high bandwidth and 7 dB gain. The input impedance is adapted for operating in combination with ceramic sound traps. The output stage delivers a nominal 2 V (p-p) positive video signal. Noise clipping is provided.

SIF ampliﬁer and AGC

The sound IF amplifier consists of two AC-coupled differential amplifier stages. Each differential stage comprises a controlled feedback network provided by emitter degeneration.

The SIF AGC detector is related to the SIF input signals (average level of AM or FM carriers) and controls the SIF amplifier to provide a constant SIF signal to the AM demodulator and single reference QSS mixer. The SIF AGC reaction time is set to ‘slow’ for nominal video conditions. But with a decreasing VIF amplitude step the SIF AGC is set to ‘fast’ mode controlled by the VIF-AGC detector. In FM mode this reaction time is also set to ‘fast’ controlled by the standard switch.

Single reference QSS mixer

The single reference QSS mixer is realized by a multiplier. The SIF amplifier output signal is fed to the single reference QSS mixer and converted to intercarrier frequency by the regenerated picture carrier (VCO). The mixer output signal is fed via a high-pass for attenuation of the video signal components to the output pin 20. With this system a high performance hi-fi stereo sound processing can be achieved.

AM demodulator

The AM demodulator is realized by a multiplier. The modulated SIF amplifier output signal is multiplied in phase with the limited (AM is removed) SIF amplifier output signal. The demodulator output signal is fed via an integrated low-pass filter for attenuation of the carrier harmonics to the AF amplifier.

Internal voltage stabilizer and

⁄2VP-reference

The bandgap circuit internally generates a voltage of approximately 1.25 V, independent of supply voltage and temperature. A voltage regulator circuit, connected to this voltage, produces a constant voltage of 3.6 V which is used as an internal reference voltage.

For the audio output signal the constant reference voltage cannot be used because large output signals are required. Therefore this signal refers to half the supply voltage to achieve a symmetrical headroom. For ripple and noise attenuation the

⁄2VP voltage has to be filtered via a

low-pass filter by using an external capacitor together with an integrated resistor (fg= 5 Hz). For a fast setting to 1⁄2V

an internal start-up circuit is added.

1998 Feb 09 8

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and AM demodulator

TDA9811

LIMITING VALUES

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

Notes

1. I

= 125 mA; T

amb

=70°C; R

th(j-a)

= 60 K/W.

2. Machine model class B (L = 2.5 µH).

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

supply voltage (pin 29) maximum chip temperature

of 125 °C; note 1

0 7.0 V

voltage at pins 1 to 9, 1 1, 12, 19, 22, 23 and 26 to 32

s(max)

maximum short-circuit time − 10 s

tuner AGC output voltage 0 13.2 V

stg

storage temperature −25 +150 °C

amb

operating ambient temperature −20 +70 °C

electrostatic handling voltage note 2 −300 +300 V

SYMBOL PARAMETER CONDITIONS VALUE UNIT

th(j-a)

thermal resistance from junction to ambient in free air 60 K/W

1998 Feb 09 9

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and AM demodulator

TDA9811

CHARACTERISTICS

VP=5V; T

amb

=25°C; see Table 1 for input frequencies and carrier ratios; input level V

i IF 1-2, 4-5

= 10 mV RMS value (sync-level for B/G, peak white level for L); video modulation DSB; residual carrier B/G: 10%; L = 3%; video signal in accordance with

“CCIR, line 17”

; measurements taken in Fig.13; unless otherwise speciﬁed.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply (pin 29)

supply voltage note 1 4.5 5 5.5 V

supply current 93 109 125 mA

Vision IF ampliﬁer (pins 1, 2, 4 and 5)

i VIF(rms)

input signal voltage sensitivity (RMS value)

B/G standard;

−1 dB video at output

− 60 100 µV

i max(rms)

maximum input signal voltage (RMS value)

B/G standard; +1 dB video at output

120 200 − mV

∆V

o(int)

internal IF amplitude difference between picture and sound carrier

within AGC range; B/G standard; ∆f = 5.5 MHz

− 0.7 1 dB

IFcr

IF gain control range see Fig.3 65 70 − dB

i(diff)

differential input resistance note 2; activated input 1.7 2.2 2.7 kΩ

i(diff)

differential input capacitance note 2; activated input 1.2 1.7 2.5 pF

1,2,4,5

DC input voltage note 2; activated input − 3.4 − V

input resistance to ground note 2; not activated input − 1.1 − kΩ

1,2,4,5

DC input voltage note 2; not activated input − 0.2 − V

ct IF

crosstalk attenuation of IF input switch at pins 1, 2, 4 and 5

notes 2 and 3 55 60 − dB

True synchronous video demodulator; note 4 f

VCO(max)

maximum oscillator frequency for carrier regeneration

f=2f

125 130 − MHz

∆f

osc

/∆T oscillator drift as a function

of temperature

oscillator is free-running; I

AFC

= 0; note 5

−−±20 × 10−6K

−1

0 ref(rms)

oscillator voltage swing at pins 24 and 25 (RMS value)

70 100 130 mV

PC CR

picture carrier capture range B/G and L standard ±1.4 ±1.8 − MHz

L accent standard; f

= 33.9 MHz; R11= 5.6 kΩ

±0.9 ±1.2 − MHz

PC(fr)

picture carrier frequency (free-running) accuracy

L accent standard; fPC= 33.9 MHz; R11= 5.6 kΩ

−±200 ±400 kHz

PC(alg)CR

L accent alignment frequency range

AFC

=0 ±400 ±600 − kHz

acq

acquisition time BL = 75 kHz; note 6 −−30 ms

i VIF(rms)

VIF input signal voltage sensitivity for PLL to be locked (RMS value; pins 1, 2, 4 and 5)

maximum IF gain; note 7 − 30 70 µV

1998 Feb 09 10

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and AM demodulator

TDA9811

Composite video ampliﬁer (pin 21; sound carrier off)

o video(p-p)

output signal voltage (peak-to-peak value)

see Fig.8 0.88 1.0 1.12 V

V/S ratio between video

(black-to-white) and sync level

1.9 2.33 3.0 −

∆V

o(video)

output signal voltage difference

difference between B/G and L standard

−−±12 %

21(sync)

sync voltage level B/G and L standard − 1.5 − V

21(clu)

upper video clipping voltage level

VP− 1.1 VP− 1 − V

21(cll)

lower video clipping voltage level

− 0.7 0.9 V

o,21

output resistance note 2 −−10 Ω

int 21

internal DC bias current for emitter-follower

2.2 3.0 − mA

21 max(sink)

maximum AC and DC output sink current

1.6 −− mA

21 max(source)

maximum AC and DC output source current

2.9 −− mA

−1

−1 dB video bandwidth B/G and L standard;

CL< 50 pF; RL> 1kΩ; AC load

56− MHz

−3

−3 dB video bandwidth B/G and L standard;

CL< 50 pF; RL> 1kΩ; AC load

78− MHz

H(sup)

suppression of video signal harmonics

CL< 50 pF; RL> 1kΩ; AC load; note 8a

35 40 − dB

PSRR power supply ripple rejection

at pin 21

video signal; grey level; see Fig.11

B/G standard 32 35 − dB L standard 26 30 − dB

CVBS buffer ampliﬁer (only) and noise clipper (pins 10 and 22)

i,22

input resistance note 2 2.6 3.3 4.0 kΩ

i,22

input capacitance note 2 1.4 2 3.0 pF

I,22

DC input voltage 1.4 1.7 2.0 V

voltage gain B/G and L standard; note 9 6.5 7 7.5 dB

10(clu)

upper video clipping voltage level

3.9 4.0 − V

10(cll)

lower video clipping voltage level

− 1.0 1.1 V

o,10

output resistance note 2 −−10 Ω

int 10

DC internal bias current for emitter-follower

2.0 2.5 − mA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1998 Feb 09 11

Philips Semiconductors Product speciﬁcation

Multistandard VIF-PLL with QSS-IF and AM demodulator

TDA9811

o,10 max(sink)

maximum AC and DC output sink current

1.4 −− mA

o,10 max(source)

maximum AC and DC output source current

2.4 −− mA

−1

−1 dB video bandwidth B/G and L standard;

CL< 20 pF; RL> 1kΩ; AC load

8.4 11 − MHz

−3

−3 dB video bandwidth B/G and L standard;

CL< 20 pF; RL> 1kΩ; AC load

11 14 − MHz

Measurements from IF input to CVBS output (pin 10; 330 Ω between pins 21 and 22, sound carrier off)

o CVBS(p-p)

CVBS output signal voltage on pin 10 (peak-to-peak value)

note 9 1.7 2.0 2.3 V

o CVBS(sync)

sync voltage level B/G standard − 1.35 − V

L standard − 1.35 − V

∆V

deviation of CVBS output signal voltage at B/G

50 dB gain control −−0.5 dB 30 dB gain control −−0.1 dB

∆V

o(blB/G)

black level tilt in B/G standard

gain variation; note 10 −−1%

∆V

o(blL)

black level tilt for worst case in L standard

picture carrier modulated by test line (VITS) only; gain variation; note 10

−−1.9 %

diff

differential gain

“CCIR, line 330”

− 25 %

diff

differential phase

“CCIR, line 330”

− 1 2 deg

−1

−1 dB video bandwidth CL< 20 pF; RL> 1kΩ;

AC load; B/G and L standard

56− MHz

−3

−3 dB video bandwidth CL< 20 pF; RL> 1kΩ;

AC load; B/G and L standard

78− MHz

S/N (W) weighted signal-to-noise

ratio

see Fig.5 and note 11 56 60 − dB

S/N unweighted signal-to-noise

ratio

see Fig.5 and note 11 49 53 − dB

IMα

1.1

intermodulation attenuation at ‘blue’

f = 1.1 MHz; see Fig.6 and note 12

58 64 − dB

intermodulation attenuation at ‘yellow’

f = 1.1 MHz; see Fig.6 and note 12

60 66 − dB

IMα

3.3

intermodulation attenuation at ‘blue’

f = 3.3 MHz; see Fig.6 and note 12

58 64 − dB

intermodulation attenuation at ‘yellow’

f = 3.3 MHz; see Fig.6 and note 12

59 65 − dB

pc(rms)

residual picture carrier (RMS value)

fundamental wave and harmonics; B/G and L standard

− 25 mV

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

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