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TEA5705
ADVANCED 4-HEAD PLAY-BACK AND RECORD AMPLIFIER FOR VCR
. . . . . . . . . .
PLAY-BACK MODE LOW NOISE AND WIDE BAND AMPLIFIERS FOR 4 HEADS AUTOMATIC OFFSET CANCELLATION BETWEEN THE 2 SELECTED HEADS ONE PLAY-BACK OUTPUT WITHOUT AGC ONE PLAY-BACK OUTPUT INCLUDING AGC RECORD AMPLIFIER INHIBITION AND RECORD OUTPUTS GROUNDED OUTPUT FOR TRACKING VIDEO INFORMATION (TRIV) WITH ADJUSTABLE GAIN SHORT PLAY/LONG PLAY ENVELOPE COMPARATOR WITH SCHMIDT TRIGGER OUTPUT RECORD MODE TWO INTEGRATED I/I CONVERTERS WITH ACCURATE CONTROL OF TRANSCONDUCTANCE AUTOMATIC PLAY-BACK/RECORD SWITCHING BY SCANNING OF RECORD SUPPLY PLAY-BACK LOOP INHIBITION
SO28 LARGE (Plastic Micropackage) ORDER CODE : TEA5705
PIN DESCRIPTION
CASC C2-SP C1-SP H1-SP GND1 H2-SP I OUT -SP I OUT -LP H1-LP GND2 H2-LP C2-LP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 V REC V IN -SP V MES V IN -LP GND3 TRIVADJ CSPLP SW-M SW-H CHROMA VSPLP LUMAV CC TRIV
5705-01.EPS
DESCRIPTION The TEA5705 is an advancedfour head record and play-back amplifier for VCR.
November 1992
C1-LP CAGC
1/10
TEA5705
BLOCK DIAGRAM
CHROMA TRIVADJ V IN SP V IN LP SW M SW H GND3 LUMA CSPLP VSPLP
V REC
V MES
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Detector
Detector
TRIVADJ
1 CASC
2 C2 SP
3 C1 SP
4 H1 SP
5 GND1
6 H2 SP
7 I OUT SP
8 I OUT LP
9 H1 LP
10 GND2
11 H2 LP
12 C2 LP
13 C1 LP
14 CAGC
5705-02.EPS
FUNCTIONAL DESCRIPTION TEA5705 is intended for 4 heads VCR applications. It includes all the electrical functions necessary to achieve play-back and record processing for VHS and S-VHS applications (10MHz bandwidth). High performancetechnologyallows very low noise levels (current and voltage), which are frequency independant in all the frequency range. In playback mode a special feature suppresses the DC offset when switching two channels. Optimized play-back output stage gives to the TEA5705 large capability to drive directly a coaxial cable in order to reduce number of external components. Two play-back outputs are availabe : one, dedicated to Chroma processing, is a 60dB voltage amplifier output, the other, dedicatedto Luma processing, is phase opposite signal with a constant AC output level of 200mVPP at 3.8MHz signal. A tracking information for video signal (TRIV) is Luma amplitude proportional and allows automatic phase correction. The transfer function has a gain of 2.5dB higher when a LP channel is selected. Adding to this, a gain control bloc allows to modify the gain ( 6dB) of the TRIV function for all the channels by applying a bias on pin TRIVADJ. An automatic scanning of record supply voltage permits TEA5705 automatically switching either in play-back or in record mode. The switching threshold voltage is fixed to a value which forbids high current peaking through the heads. During play-back mode, record output is grounded via an internal transistor and during record mode preamplifiers are turned off. There is one output current for two recording heads, the DC current and the AC characteristics can be very precisely controlled with accurate external resistors. If recommended resistances are used, a 3% transconductanceaccuracy is guaranteed. Feedback loop gains of SP channel and LP channel can be different. A particular feature is the SP/LP envelope comparator and detector. This system can be used in search mode, still mode, slow mode... The output signal is an output current feeding a capacitor (CSPLP) which is bufferised through a schmidt trigger circuit to VSPLP. This output is high in record mode. By varying the capacitance on CSPLP a good compromise can be found between short delay time and spike free signal. TEA5705 is fully protected against ESD.
2/10
TRIV
VCC
TEA5705
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VREC TJ Toper Parameter Power Supply Voltage Power Supply Voltage Record Junction Temperature Operating Temperature Value 6 15 +150 0, +70 Unit V V o C o C
Symbol R th (j-a)
Parameter Junction-ambient Thermal Resistance
Typ.
Value 70
o
Unit C/W
RECOMMENDED OPERATING CONDITIONS (Tamb = 25oC)
Symbol VCC VREC CAGC CSPLP Parameter Power Supply Voltage Power Supply Voltage Record Capacitance at Pin CAGC Capacitance at Pin CSPLP Min. 4.5 4.75 4.7 Typ. 5 11.3 4.7 Max. 5.5 12.6 Unit V V nF nF
ELECTRICAL OPERATING CHARACTERISTICS (Tamb = 25oC unless otherwise specified) Power Consumption
Parameter VCC VREC VCC = 5V, V REC = 9V VCC = 5.5V, V REC = 9.45V Play-Back Typ. Max. 55mA 70mA 0mA 0mA 250mW 385mW Record (1) Typ. Max. 40mA 50mA 27mA 33mA 478mW 630mW
Total Consumption (2)
Notes : 1. 2.
R1 = 18 Taking in account only the consumption through the IC. A great care should be taken to the maximum power consumption : VREC can be increased to 12.6V if the DC current flowing through the head is reduced. This can be done by increasing R1 value. VREC can be reduced as long as voltage on Pins IOUT-SP, IOUT-LP is not going under 1V (to forbid output stage saturation).
Play-back Mode VCC = 5V, no load on Pins CHROMA,LUMASymbol Parameter ICC1 Supply Current CHROMA OUTPUT (no AGC) GPB Pre-amplification Gain Sinewave 600 kHz 400mVPP on output Input on Pin H1-SP or H2-SP, H1-LP or H2-LP Sinewave 600kHz 0.4mV PP on inputs H1-SP and H2-SP Sinewave 600kHz 0.4mV PP on inputs H1-LP and H2-LP Input grounded via switching transistor on Pins H1-SP, H2-SP, H1-LP, H2-LP, F = 600kHz Pins H1-SP, H2-SP, H1-LP, H2-LP 57 60 63 dB Test Conditions Min. 45 Typ. Max. 55 70 Unit mA
GPB1 GPB2 eN iN
Equivalent Input Current Noise
1.7
pA Hz 3/10
5705-05.TBL
Difference of Output Signal on Pin CHROMA between Channel 1 and Channel 2 in SP Mode Difference of Output Signal on Pin CHROMA between Channel 1 and Channel 2 in LP Mode Equivalent Input Voltage Noise Level
-1.2
0
1.2
dB
-1.2
0
1.2
dB nV Hz
0.6
5705-04.TBL
5705-03.TBL
5705-02.TBL
THERMAL DATA
5705-01.TBL
TEA5705
ELECTRICAL OPERATING CHARACTERISTICS (Tamb = 25oC unless otherwise specified) (continued) Play-back Mode VCC = 5V, no load on Pins CHROMA,LUMASymbol CRT Crosstalk Parameter Test Conditions Sine wave 3.8MHz 400VPP on input, All the other inputs loaded with Rg = 15 I = 10mA -3dB attenuation 50 in parallel on the input, 0dB at 600kHz Low High At 5MHz At 3.8MHz DC 1.5 Min. Typ. Max. -45 -40 Unit dB MHz MHz pF V CHROMA OUTPUT (no AGC) (continued)
RPB FLCPB1 FHCPB1 CIN RIN ZCPB VDCPB1 VDCSP VDCLP SH PB1
Playback Switch-on Resistance Bandwidth Cut-off Frequency
2.0
5.0
0.1 8 13.5 30 600 24 1.9 40 900 50 2.3
Input Capacitance Pins H1-SP, H2-SP, H1-LP, H2-LP Pre-amplifier Input Resistance Pins H1-SP, H2-SP, H1-LP, H2-LP Output ImpedancePin CHROMA DC Level at Play-back Output on Pin CHROMA Head Switch Offset Pin CHROMA
400
-100 -100 Second Harmonic Play-back Output Pin CHROMA Output Impedance DC Level Bandwidth Cut-off Frequency Sinus wave 3.8MHz 400VPP on input DC 1.1
0 0 -45
100 100 -40
mV mV dB
LUMA- OUTPUT (with AGC) ZLPB VDCPB2 30 1.5 50 2.1 V
FLCPB2 FHCPB2 VLPB VLPB SH PB2 CAGC I+ ITRIV ITRIV VTRIV1 VTRIV2 VTRIV3 VTRIV4 VTRIV5 VTRIV6
-3dB attenuation 50 in parallel on the input, AGC locked, 0dB at 3.8MHz Low High Output Amplitude Input signal 200VPP at 3.8MHz on Pins H1-SP, H2-SP, H1-LP, H2-LP AGC Control Sensitivity Input signal 200VPP at +6dB or -5dB on Pins H1-SP, H2-SP, H1-LP, H2-LP Second Harmonic Play-back Output Input Signal 3.8MHz 400VPP on Pins H1-SP, H2-SP, H1-LP, H2-LP Positive Output Current Negative Output Current Downloading Current Output Level (1) Output Level (2) Output Level (3) Output Level (4) Output Level (5) Output Level (6) Input Signal 3.8MHz 200VPP on H1-SP Input Signal 3.8MHz 200VPP on H1-SP
0.1 10 140 -2 -44 12.5 200 270 +1 -40
MHz MHz mVPP dB dB
15 -50
30 -30
50 -15
A A A V V V V V V
5705-06.TBL
200 300 400 With no signal, VTRIVADJ = 2.5V 0.3 0.6 1 Mode LP (SW-M = high) 1.91 2.31 2.71 VCHROMA = 100mVPP at 4MHz VTRIVADJ = 2.5V, Mode LP (SW-M = high) 3.525 3.725 3.925 VCHROMA = 400mVPP at 4MHz VTRIVADJ = 2.5V, Mode LP (SW-M = high) 1.11 1.61 2.11 VCHROMA = 100mVPP at 4MHz VTRIVADJ = 1V, Mode LP (SW-M = high) 2.875 3.075 3.275 VCHROMA = 100mVPP at 4MHz VTRIVADJ = 4V, Mode LP (SW-M = high) 3.215 3.415 3.615 VCHROMA = 400mVPP at 4MHz VTRIVADJ = 2.5V, Mode SP (SW-M = low)
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TEA5705
ELECTRICAL OPERATING CHARACTERISTICS (Tamb = 25oC unless otherwise specified) (continued) Play-back Mode VCC = 5V, no load on Pins CHROMA,LUMASymbol TRIV (continued) VTRIV7 fTRIV1 fTRIV2 GTRIV Output Level (7) Response Lower Frequency Response Higher Frequency High Level Input VCHROMA = 100mVPP at 4MHz VTRIVADJ = 2.5V, Mode SP (SW-M = low) VCHROMA = 360mVPP at 4MHz and 1MHz VTRIVADJ = 2.5V, Mode LP (SW-M = high) VCHROMA = 360mVPP at 8MHz and 4MHz VTRIVADJ = 2.5V, Mode LP (SW-M = high) LP : VCHROMA = 100mVPP, 300mVPP at 4MHz, VTRIVADJ = 2.5V 200VPP on Pins H1-SP or H2-SP 200VPP on Pins H1-LP or H2-LP 50VPP to 600VPP on SP, LP short circuited 50VPP to 600VPP on LP, SP short circuited Scanning through Pin CSPLP Scanning through Pin CSPLP Output high Output low 7.5 1.5 1.65 -10 -2.5 4 2.05 -6 -1 5.5 2.45 -3 -0 7 V dB dB V/V Parameter Test Conditions Min. Typ. Max. Unit
SP/LP ENVELOPE DETECTOR IDET+ IDETVDETH VDETL VTH VTL ROH R OL Current Output on Pin CSPLP Current Output on Pin CSPLP Sensitivity 1 on Pin CSPLP Sensitivity 2 on Pin CSPLP Upper Threshold on Pin VSPLP Lower Threshold on Pin VSPLP Output Resistance on Pin VSPLP 25 -85 4 0 55 -55 4.5 0.5 3.33 1.66 12.5 2.5 17.5 3.5 85 -25 5 1 A A V V V V k k
Record Mode VREC = 11.3V, VCC = 5V, Load resistor 50 on Pin IOUT-SP, IOUT-LP Transconductance network defined by : R1 = 18, 1% Pins GND/VMES R2-SP = 2k, 1% Pins VMES/VIN-SP R2-LP = 1.5k, 1% Pins VMES/VIN-SP R3-SP = 1.5k, 1% Pin VIN- SP R3-LP = 1.5k, 1% Pin VIN- LP
Symbol Parameter IREC Current Supply ICC2 Imax Max. Record Current on SP or LP Current Amplifier TR Transconductance SHREC Second Harmonic Test Conditions VREC = 11.3V VCC = 5V 3.8MHz VIN -SP = 300mVPP VIN -LP = 300mVPP Output Current, 30mAPP at 3.8MHz at Pin IOUT-SP at Pin IOUT-LP -3dB attenuation, 0dB at 3.8MHz Output current 30mAPP Low High -3dB attenuation, 0dB at 3.8MHz Output current 30mAPP Low High Equivalent value of R3 resistor Min. 17 30 35 55 45 Typ. Max. 25 33 43 56 Unit mA mA mAPP mA/V mA/V dB dB
74 55 -54 -54
85 65 -38 -38
Bandwidth Cut-off Frequency Pin IOUT-SP FLCRSP FHCRSP VSPLPV
0.1 10 4
DC Level at Pin VSPLP Bandwidth Cut-off Frequency Pin IOUT-LP Input Resistance on Pins VIN-LP, VIN-SP
MHz MHz V
700
900
5/10
5705-07.TBL
FLCRLP FHCRLP RVIN-SP R VIN-LP
0.1 10 500
MHz MHz
TEA5705
ELECTRICAL OPERATING CHARACTERISTICS (Tamb = 25oC unless otherwise specified) (continued) Switching Levels
Symbol VSWHH VSWHL ISWHH ISWHL VSWMH VSWML ISWMH ISWML Parameter Test Conditions Head number 1 in SP mode, 2 in LP mode Head number 2 in SP mode, 1 in LP mode Input current (5V) Output current (0V) LP Mode SP mode Input current (5V) Output current (0V) Output signal appears on Pin CHROMA Delay time selection ON Delay time selection OFF VCC = 5V Min. 2.4 0 5 -50 2.4 0 5 -50 15 -20 Typ. Max. VCC 1.5 50 0 5 1.5 50 0 Unit V V A A V V A A ns
Head Selection Pin SW-H
Mode Selection Pin SW-M (Record mode and play-back mode) Selection Pin SW-H or SW-M Transient Response
15 -20
tON tOFF VTH1
VTH2
Inhibition Threshold Hysteresis for Switching from Play-back to record on Pin VREC Inhibition Threshold Hysteresis for Switching from Record to Play-back on Pin VREC
0.15
100 100 0.3
500 500 0.5
V
VCC = 5V
80
mV s ms ms ms
5705-08.TBL 5705-04.EPS
t1 t2 t3 t4 Transient Response of Record Scanning on Pin VREC
Delay from play-back to record (signal disappears on Pin CHROMA) Delay from record to play-back (signal appears on Pin CHROMA) Delay from play-back to record (signal appears on Pin IOUT-SP, I OUT-LP) Delay from record to play-back (signal disappears on Pin IOUT-SP, IOUT-LP)
10 32* 0.2 11*
* Depending on capacitance on Pin VREC ; above values are according to the application diagram at page 9.
INPUT/OUTPUTS EQUIVALENT INTERNAL DIAGRAM Pins : C1-SP, C2-SP, C1-LP, C2-LP Pins : SW-H, SW-M
V CC
VCC 7.5k
10k
15k
47k
10k
400
6/10
5705-03.EPS
1k
TEA5705
INPUT/OUTPUTS EQUIVALENT INTERNAL DIAGRAM (continued) Pins : Chroma, LumaV CC 4k 5pF
Pin : VMES
V REC
800
1.5pF 500
0.5pF
6pF
5705-05.EPS 5705-06.EPS
75
18
Pin : VIN-SP, VIN-LP
Pin : CAGC
V CC
VCC
V CC
750
750 6pF
2.4V
5705-07.EPS 5705-08.EPS
Pin : TRIV
V CC
Pin : TRIVADJ
V CC
9k 2.5V
300A
5705-09.EPS 5705-10.EPS
7/10
TEA5705
INPUT/OUTPUTS EQUIVALENT INTERNAL DIAGRAM (continued) Pin : VCC Pin : VREC
1mA
5705-11.EPS
Pin : IOUT-SP, IOUT-LP
V CC 5V
Pins : CCAS, H1-SP, H2-SP, H1-LP, H2-LP
VCC 240k 1.5k 10pF
800
ESD protection
80k
2.1V 36k
CCAS
2.8mA in play-back
5705-13.EPS
H1-SP H2-SP H1-LP H2-LP
V MES
Pin : CSPLP
V CC
Pin : VSPLP
VCC
10k 2.5k
8/10
5705-15.EPS
5705-16.EPS
5705-14.EPS
5705-12.EPS
TEA5705
APPLICATION DIAGRAM
CHROMA CSPLP VIN C VSPLP SW M R5 1k R3 1k LUMA
H L1 22
R6 4.5k
VIN L
R3-L 1.5k
R1 18
C18 4.7nF R2-L 1.5k 0V R2-S 2k C17 1n F C16 1nF
C19 22n F R7 4.5k R3-S 1.5k C20 22nF
SW H
VP
C2 22 nF 0V VSPLP LUMA -
C1 22F
CHROMA
TRIVADJ
VIN SP
VIN LP
GND3
CSPLP
TRIV TRIV 16 15 13 C1 LP 14 CAGC C13 22nF C14 22nF VCC C12 22n F 0V R9 1k C22 22 nF
5705-17.EPS
SW M 21
VR
L2 22 H C3 22F 0V 0V C4 22nF
28
27
26
25
24
23
SW H 20
VREC
VMES
22
19
18
17
Detector
Detector
TRIVADJ
1 C2 SP CASC
2 C1 SP
3 H1 SP
4
5 H2 SP GND1
6
7 IOUT SP IOUT LP
8 H1 LP
9
10 GND2
11 H2 LP
12 C2 LP
C5 22nF
C6 22nF
C7 22 nF
C8 22nF H2 SP
0V
C9 22nF H1 SP
C10 0V 22 nF H2 LP
C11 22nF H1 LP D4 1N414 8
0V R8 1k C23 22nF
D1 1N4148
D2 1N4148
D3 1N414 8
9/10
TEA5705
PACKAGE MECHANICAL DATA 28 PINS - PLASTIC MICROPACKAGE
L C c1
A
e3
E
D
28
15
Dimensions A a1 b b1 C D E e e3 F L S
Millimeters Min. 0.05 0.31 0.15 0.33 18.13 10.11 10.31 1.27 16.51 7.42 0.48 7.52 0.58 7.62 0.68 8o (max.) 0.292 0.019 10.51 0.399 0.41 Typ. Max. 2.59 0.20 0.51 0.25 0.002 0.012 0.006 Min.
Inches Typ. Max. 0.102 0.008 0.016 0.013 0.714 0.406 0.050 0.65 0.296 0.023 0.300 0.027
SO28B.TBL
0.020 0.010
0.414
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without noti ce. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
10/10
PM-SO8.EPS
1
14
F
a1
b
e
s
b1

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