Ordering number : EN5709 Monolithic Linear IC LA70001, 70001M Record/Playback Amplifiers for VHS Format VCRs Overview Package Dimensions The LA70001 and LA70001M ICs provide record and playback amplifiers for VHS format VCRs. A system with an adjustment-free Y/C record current can be achieved by combining the LA70001/M with an LA71000M or LA71500M video signal processing IC. unit: mm 3067-DIP24S [LA70001] Features • Direct connection of the head to the playback amplifier input allows the number of external devices to be reduced. • A fixed-current drive technique that is strongly resistant to load fluctuations is adopted in the record amplifier for stable recording characteristics. The record amplifier includes a built-in AGC circuit. • These products have the same package dimensions as the LA70011 and LA70011M to allow a common PCB to be used. These products can also share the same PCB with the LA70020 by mounting the IC at the right end of the LA70020 socket. SANYO: DIP24S unit: mm 3112-MFP24S [LA70001M] Specifications SANYO: MFP24S Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Conditions VCC max Allowable power dissipation Pd max Ratings Unit 7.0 V Ta ≤ 65°C [LA70001] 600 mW Ta ≤ 65°C [LA70001M] (Using a 114.3 × 76.1 × 1.6 mm glass epoxy PCB) 500 mW Operating temperature Topr –10 to +65 °C Storage temperature Tstg –40 to +150 °C Ratings Unit Operating Conditions at Ta = 25°C Parameter Symbol Recommended supply voltage VCC Operating supply voltage range VCC op Conditions 5.0 V 4.8 to 5.5 V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN 13098RM (OT) No. 5709-1/8 LA70001, 70001M Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Ratings min typ Unit max [Playback Mode] Current drain Voltage gain ICCP The pin 13 inflow current. 23 29 35 CH1 GVP1 VIN = 38 m Vp-p, f = 1 MHz 56 59 62 dB CH2 GVP2 56 59 62 dB –1 0 +1 dB 1.0 1.5 µVrms ∆GVP1 GVP1—GVP2 VNIN1 VNIN2 With the same conditions as for the voltage gain, the ratio of the output passed through a 1.1-MHz low-pass filter and the output with no input signal. CH1 ∆Vfp1 The ratio of the output for VIN = 38 mVp-p, CH2 ∆Vfp2 f = 7 MHz and GVP1, 2, 3, and 4. Voltage gain difference 1 Equivalent input noise voltage Frequency characteristics CH1 CH2 Second harmonic distortion CH1 CH2 VHDP1 VHDP2 With VIN = 38 mVp-p, f = 4 MHz, the ratio of the 8-MHz output component (second harmonic) and the 4-MHz component (the fundamental). Maximum output level CH1 CH2 VOMP1 VOMP2 At f = 1 MHz, the output level when the ratio of the 3-MHz output (third harmonic) and the 1-MHz output (fundamental) is –30 dB. Crosstalk SP Output DC offset Envelope detector output pin voltage VCR1 ∆VODC1 1.0 dB –35 1.2 dB Vp-p –40 –35 dB –100 0 +100 mV 0 0.8 1.3 V The T6 DC level when there is no input signal. VENVSP1 With a f = 4 MHz input, the T6 DC level when the T7A output level becomes 175 mVp-p. 2.0 2.5 3.0 V VENVSP2 With a f = 4 MHz input, the T6 DC level when the T7A output level becomes 400 mVp-p. 3.5 4.0 4.5 V VENVEP1 With a f = 4 MHz input, the T6 DC level when the T7A output level becomes 125 mVp-p. 2.0 2.5 3.0 V VENVEP2 With a f = 4 MHz input, the T6 DC level when the T7A output level becomes 300 mVp-p. 4.0 4.5 5.0 V RPON18 Measure the difference in the DC levels with a 1-mA and a 2-mA inflow current. 4 6 Ω SW30-1 Lch → Hch *1 1.2 5.0 V SW30-2 Hch → Lch 0.0 0.8 V Envelope detector output pin voltage EP SW30 threshold level –40 The ratio of the VIN = 38 mVp-p, f = 4 MHz output and GVP1. CH1 – CH2 0 VENV Envelope detector output pin voltage SP1 Switch transistor on resistance in playback mode –2.5 mA [Record Mode] Current drain ICCR The pin 13 inflow current. Record AGC amplifier output level VRSP The output level when VIN = 400 mVp-p, f = 4 MHz. Record AGC amplifier control characteristics ∆VAGC1-SP At f = 4 MHz, when VIN = 700 mVp-p: the output level /VRSP, EP ∆VAGC2-SP At f = 4 MHz, when VIN = 100 mVp-p: the output level /VRSP, EP 43 50 57 mA 105 112 119 mVp-p 0.5 1.0 dB –1.0 –0.5 dB –1 0 +1 dB –45 –40 dB ∆VFRS At VIN = 400 mVp-p, the ratio of the outputs when f is 1 MHz and 7 MHz, i.e. the ratio of the 7-MHz value to the 1-MHz value.*2. Record AGC amplifier second harmonic distortion ∆VHDRS With VIN = 400 mVp-p, f = 4 MHz, the ratio of the 8-MHz output component (second harmonic) and the 4-MHz component (the fundamental). Record AGC amplifier maximum output level ∆VMOSP At f = 4 MHz, the output level at which the second harmonic goes to –35 dB. *3 Record AGC amplifier muting attenuation ∆VMRS When VIN = 400 mVp-p and f = 4 MHz, the output level/VRSP, EP –45 –40 dB Record AGC amplifier cross modulation relative level ∆VCYS T9A: VIN = 400 mVp-p, f = 4 MHz T10A: VIN = 2.4 Vp-p, f = 629 kHz The ratio of the (4 MHz ± 629 kHz) and the 4-MHz outputs. –45 –40 dB V Record AGC amplifier frequency characteristics Record muting threshold level Record mode to playback mode threshold level 20 22 mAp-p MUTE-1 MUTE OFF → MUTE ON *1 1.2 2.8 MUTE-2 MUTE ON → MUTE OFF 3.2 5.0 V PB-REC PB → REC *1 1.2 5.0 V REC-PB REC → PB 0.0 0.8 V Notes:Use a resistor with an accuracy of 1.0% for the resistor between pins 13 and 14. *1. This is the voltage application point *2. Here, fix the AGC amplifier gain by applying a 1.8-V DC level to the AGC detector filter pin (pin 15). *3. Here, adjust the output level by applying a DC voltage to the REC-CUR-Adj pin (pin 12). No. 5709-2/8 LA70001, 70001M Pin Functions Pin No. Pin name 1 N.C 2 N.C Standard DC voltage (V) Equivalent circuit Notes EP 3 HA (EP/SP) 1.5 V SP Hch 4 SW30 1.0 V Lch SYNC H 5 H-SYNC 1.5 V L 6 7 8 20 PB Provided in a separate document. REC 0 PB 1.7 REC 2.1 ENVDET-OUT PB-OUT GND Continued on next page. No. 5709-3/8 LA70001, 70001M Continued from preceding page. Pin No. 9 10 Pin name Standard DC voltage (V) PB 4.0 REC 3.7 PB 4.0 REC 3.7 Equivalent circuit Notes REC-Y-IN REC-C-IN REC 3.0 V 11 REC MUTE REC/MUTE/PB 1.0 V PB 12 13 14 PB 2.5 V REC 2.5 V PB 5.0 REC 4.5 REC-CURRENT-ADJ2 VCC REC-CURRENT-ADJ1 Continued on next page. No. 5709-4/8 LA70001, 70001M Continued from preceding page. Pin No. 15 16 19 17 18 21 22 23 24 Pin name Standard DC voltage (V) PB 0 REC 1.6 PB 2.1 REC 4.1 PB 2.1 V REC 4.1 V PB 0 REC 2.5 Equivalent circuit Notes REC-AGC-FILT L IN H IN REC_SP_OUT PB FILT N.C No. 5709-5/8 LA70001, 70001M Usage Notes Control Pin Logic • HA-SW (EP/SP mode switching): pin 3 GND < the pin 3 DC level < 1.5 V: SP mode 1.5 V < the pin 3 DC level < 5 V: EP mode • H.SYNC input: pin 5 The pin 5 DC level > 1.5 V: The horizontal synchronization period In record mode: Used as the REC-AGC-AMP synchronization block gate pulse. • REC/REC-MUTE/PB switching: pin 11 GND < the pin 11 DC level < 1.0 V: Playback mode 1.0 V < the pin 11 DC level < 3.0 V: Record mode with recording muted. 3.0 V < the pin 11 DC level < 5.0 V: Record mode Envelope detection characteristics: pin 6 The LA70001 provides a built-in playback signal envelope detection circuit so that the tracking adjustment can be made automatic. Envelope Detection Voltage Characteristics The pin 6 detected DC level (V) EP when an 18 kΩ resistor is connected at pin 6. SP when an 18 kΩ resistor is connected at pin 6. The pin 7 playback output level (mVp-p) No. 5709-6/8 LA70001, 70001M Record Amplifier Gain Control The LA70001 achieves an adjustment-free record current by adding an AGC circuit in the record amplifier block. The record current can be modified using the following method. • Record current adjustment 2: When left open. Pin 12 DC level is set to 1/2 VCC (approximately 2.5 V) by an internal bias, and the record current is determined by Ro1. Design value: When Ro1 is 1.5 kΩ, the record current will be 12.7 mA per channel. • Record current adjustment 2: When used. The gain can be varied by –6.0 dB to +3.5 dB relative to the value set by Ro1 by applying a control DC voltage of between 1 and 4 V to pin 12. Record current (mAp-p) design value Note: The technique shown in the figure below can be used to apply a DC level to pin 12. This allows a control voltage of between 1 and 4 V to be applied. No. 5709-7/8 LA70001, 70001M Block Diagram ■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. ■ Anyone purchasing any products described or contained herein for an above-mentioned use shall: ➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. ■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of January, 1998. Specifications and information herein are subject to change without notice. PS No. 5709-8/8