Ordering number: EN4158 Monolithic Linear IC LA2000M Audio Level Sensor Overview Package Dimensions LA2000M is an IC for detecting interprogram spaces to pick out the starting point of a program immediately preceding or following a musical program recorded on tape, and to detect end of tape. unit : mm 3032B-MFP8 [LA2000M] Used in . Radio-cassette recorders . Cassette decks . Car stereos Applications . Detection of spaces between programs recorded on tape . Detection of end of tape . Other SANYO : MFP8 Features . Has transistors capable of driving plungers with maximum . . . 50 mA, and a protective diode to prevent induced reverse voltages. Can provide designated time delays by externally connected capacitors and resistors. Has a comparator with stable hysteresis to handle variations in power supply voltage. Detects unrecorded portions of tape. Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Conditions Ratings Unit VCC max 15 V Allowable power dissipation Pd max 300 mW Flow-in current I6 max 50 mA Operating temperature Topr −20 to +75 °C Storage temperature Tstg −40 to +125 °C Note:1. The voltage at pin 7 must not exceed the supply voltage at pin 8. 2. The maximum current flowing into pin 7 should be no greater than 0.5 mA. SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 42896HA(II) No. 4158-1/7 LA2000M Operating Conditions at Ta = 25°C Parameter Symbol Operating supply voltage Conditions VCC op Ratings Unit 3.5 to 14 V Operating Characteristics at Ta = 25°C, VCC = 9.0 V, f = 1 kHz Symbol ICC Conditions f = 1 kHz, VIN = −45 dBm VCE (sat) typ 6 max 12 Unit mA I6 = 50 mA 0.5 1.8 V VF IF = 50 mA 0.7 1.5 V VIN f = 1 kHz −43 −50 −54 dBm 3.0 1.8 0.45 3.5 2.2 0.55 4.0 2.6 V V V IL-TR 100 µA IL-Di 100 µA VTH-H VTH-L V7 pin min Allowable power dissipation, Pd max − mW Parameter Circuit current Output transistor saturating voltage Output diode forward voltage Output-off level in input equivalent Comparator-on level Comparator-off level Pin 7 high level Output transistor leakage current Output diode leakage current Ambient temperature, Ta − °C Equivalent Circuit Block Diagram No.4158-2/7 LA2000M Test Circuit Unit (resistance: Ω, capacitance: F) Test Conditions Test items Circuit current Output transistor saturation voltage Symbol SW-1 SW-2 SW-3 SW-4 Conditions ICC 1 1 1 3 Measure current flowing into pin 8 at VIN = −45 dB VCE (sat) 2 2 2 3 Measure VIN at pin 5 Output diode forward voltage VF 2 4 2 1 Measure VIN at pin 5 Output-off level in input equivalent VIN 1 1 1 3 Input level (v.v) when pin 5 turns over Comparator-on level VH 2 3 1 3 Measure V3 when pin 5 turns over Comparator-off level VL 2 3 1 3 Vp-7 2 4 1 3 Measure V3 when pin 5 turns over Measure V2 at pin 7 Output transistor leakage current ITL 2 4 3 3 Measure M3 Output diode leakage current IDL 2 4 4 2 Measure M2 Pin 7 high level Sample Application Circuit 1 Mechanism-coupled switch (OFF at play mode) Plunger Unit (resistance: Ω, capacitance: F) No.4158-3/7 LA2000M Sample Application Circuit 2 Use a mechanism for the plunger off while functioning for program selection Unit (resistance: Ω, capacitance: F) 1. Externally connected components C1 C2 Input coupling capacitor NF capacitor C3, R1 For designation of time delays C4, R3 R2 Power supply ripple filter Bias resistor 0.47 to 2.2 µF recommended. Capacitance is reduced, so the off level in input equivalent becomes lower in the bass frequency range. We recommend 1 to 10 µF. Any time delay can be obtained by adequate choice of C3 and R1. We recommend 150 kΩ to 500 kΩ for R1. For diode when pin 7 is used to drive external transistors. A 1 kΩ resistor is recommended. No.4158-4/7 LA2000M 2. Individual pins and their operations Input signal level, VIN − dBm As shown above, when input level is raised and the pin 2 voltage reaches the VTH-H level of the comparator, pins 5 and 7 turn over. (VIN = −45 dBm). . pin 5 is for driving plungers. When it is on the ‘‘L’’ side, pin 5 turns on and can draw current up to 50 mA maximum. . Pin 6 is a diode that prevents reverse voltages induced when the plunger is turned off from on. . Pin 7 functions in phase with pin 5 and can drive external transistors (such as for MUTE). 3. Time delays and obtaining CRs When input signals that have been applied at a level not less than −45 dBm are removed, discharging occurs through the CR connected at pin 2, lowering pin 2 potential. A time delay is provided before the hysteresis comparator turns over. E1 E0 =− t eτ E0 : Initial voltage E1 : Threshold voltage τ : Time constant Accordingly, t = −τIn E1 E0 E1/E0, within the IC, is 0.26. A desired time delay is obtained by an appropriate choice of τ (τ = C3R1). Therefore, the time delay is obtained by the following formula: t = 1.34 × C3R1 (sec) We recommend 150 kΩ to 500 kΩ for R when determining CR. IC usage notes .4. Maximum ratings When maximum ratings are surpassed, destruction or deterioration may result. . Interpin short circuits and reverse insertions cause destruction or deterioration of the IC: be careful when mounting on circuit board. . These Voltage applied to pin 7 should never exceed pin 8 voltage. . The current flowing into pin 7 is to be 0.5 mA maximum. No.4158-5/7 LA2000M V2 pin, VH, VL − VCC Quiescent Operating V2 pin, VH, VL − V Circuit current, ICC − mA ICC − VCC Supply voltage, VCC − V VIN − VCC Supply voltage, VCC − V VIN − f Off On Input level, VIN − dBm Input level, VIN − dBm Input level when pin 5 [L] → [H] Frequency, f − Hz V2 pin − VIN V2 pin − V V2 pin − V Supply voltage, VCC − V V2 pin − f Input level, VIN − dBm VCE (sat) − IC V2 pin − V Output transistor saturation voltage, VCE (sat) − V Frequency, f − Hz V2 pin − VCC Supply voltage, VCC − V Collector current, IC − mA No.4158-6/7 VF − Di V2 pin − Ta V2 pin − V Output diode forward voltage, VF − V LA2000M Diode forward current, Di − mA Ambient temperature, Ta − °C V2 pin − Ta V2 pin − mW Input level, VIN − dBm VIN − Ta On level Ambient temperature, Ta − °C Circuit current, ICC − mA Ambient termperature, Ta − °C ICC − Ta Off level Ambient temperature, Ta − °C 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: 1 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: 2 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 April, 1996. Specifications and information herein are subject to change without notice. No.4158-7/7