Ordering number : EN5660 Monolithic Linear IC LA4168M Record/Playback System for Microcassette and Compact Cassette Recorders Overview Features The LA4168M is a record/playback system IC for microcassette and compact cassette recorders. The LA4168M is an extremely high-functionality IC that includes a motor control governor circuit, a voice sensor circuit that detects sounds and turns motor on or off, a power switch control circuit that receives an electrical signal from a photosensor and turns all of the IC function blocks on or off, and a circuit that increases the speed of the motor during playback. • Includes a voice switch that can turn the governor on or off. • Includes a power switch circuit that can turn all the IC function blocks on or off from a photosensor signal. During record, the IC can automatically turn the governor on or off according to the microphone input level, and furthermore, the governor on/off level can be continuously adjusted from an external control knob. (The control used for volume adjustment during playback.) • Continuously variable microphone monitor level. • Includes a drive pin for an LED that lights only when the governor is on in record mode. Functions • • • • • • • • • Microphone and playback preamplifiers Record amplifier Power amplifier (BTL, 4 Ω) Automatic stop circuit (power switch) Governor circuit Motor speed and high-speed switching circuit Microphone power supply LED drive circuit Voice sensor circuit Package Dimensions unit: mm 3073A-MFP30SD [LA4168M] SANYO: MFP30SD Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Conditions Ratings Unit VCC max 4.5 V Pd max 800 mW Allowable power dissipation Operating temperature Topr –10 to +50 °C Storage temperature Tstg –55 to +150 °C Ratings Unit Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Operating voltage range Load resistance Symbol VCC Conditions 3.0 V VCCop 1.8 to 3.6 V (power block) RLpwr 4 Ω (preamplifier block) RLpre 10 kΩ SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 73097HA(OT) No. 5660-1/6 LA4168M Operating Characteristics at Ta = 25°C, VCC = 3.0 V, RL = 4 Ω (power amplifier), RL = 10 kΩ (preamplifier), f = 1 kHz, 0 dBm = 0.775 V Parameter Symbol Conditions Ratings min typ Unit max [PRE + POWER + GVN] Standby current ISTB With pin 9 connected to VCC through a 100-kΩ resistor 25 170 250 µA 6 12 71.5 12 18 74 18 25 76.5 mA mA dB 80 50 0.5 85 52 0.75 0.2 1.0 60 [PRE + POWER] Quiescent current Voltage gain [EQ AMP] Voltage gain (open loop) Voltage gain (closed loop) Maximum output voltage Total harmonic distortion Equivalent input noise voltage Ripple rejection ratio [MIC AMP] VOL MIN, ALC OFF Voltage gain (closed loop) Maximum output voltage Total harmonic distortion Equivalent input noise voltage Ripple rejection ratio Input resistance [MIC + REC] VOL MIN Voltage gain (closed loop) Maximum output voltage Output noise voltage Ripple rejection ratio [POWER AMP] Voltage gain (closed loop) Voltage gain (closed loop) Output power Total harmonic distortion Output noise voltage Ripple rejection ratio Output DC offset Input resistance [ALC] ALC width ALC harmonic distortion ALC output ALC start input [Voice Sensor (VOX)] Operation start input voltage Input hysteresis [Auto-Stop] Operation voltage ICC-R ICC-P VGTP VGOP VGP VOP max THDP VNIP Rrp REC MODE, Vi = 0 V PLAY MODE, Vi = 0 V, VOL MIN PLAY MODE, VO = –5 dBm CNF = 100 µF THD = 1 % VO = 0.3 V Rg = 2.2 kΩ, DIN audio Rg = 2.2 kΩ, fR = 1 kHz filter 45 VGM1 VOmaxM THDM VNIM SVRR RIM ALC OFF THD = 1 %, RL = 10 kΩ VO = 0.3 V Rg = 3 kΩ, DIN audio Rg = 3 kΩ, fR = 1 kHz filter VGRT VOmaxR VNORT RrRT ALC OFF THD = 5 % MIC Input, Rg = 3 kΩ, DIN audio Rg = 3 kΩ, fR = 1 kHz , 1 kHz filter 63.5 0.6 VGBTL VGSIN POBTL POSIN THDBTL VNOBTL RrBTL VDCOFF RINBTL BTL ON, VO = –10 dBm Single, VO = –10 dBm THD = 10 %, BTL ON THD = 10 %, Single BTL ON, VO = 0.25 V BTL ON, Rg = 0 kΩ BTL ON, Rg = 0 kΩ, fR = 1 kHz , 1 kHz filter BTL ON, Rg = 0 kΩ 21.5 20.5 200 50 0.1 ALCW ALCTHD ALC VO ALC VIN VOP min VO HL VI ATS 43 0.5 40 24 45 0.75 0.6 2.0 53 32 54 0.6 2.0 47 1.0 4.0 40 dB dB V % µV dB dB V % µV dB kΩ 65.5 1.0 3.5 32 67.5 26.5 25.5 50 0 21 24 23 350 120 0.8 20 70 10 30 40 67 0.33 –79 1.0 0.43 –74 2.0 0.53 –69 % V dBm –90 3 –85 6 –80 9 dBm dB 0.65 0.7 8 15 22 1.1 45 0.1 0.35 1.25 50 0.2 0.41 1.4 55 0.5 0.47 V VCC = 1.8 to 4.5 V, Im = 100 mA 0 0.2 0.6 %/V VCC = 2.0 to 4.5 V, Im = 50 – 100 mA 0 0.3 0.7 %/V Im = 50 – 200 mA 0 0.002 0.03 %/mA –0.07 0.03 +0.07 %/mA The input level width from the point the ALC circuit operates to the point the harmonic distortion reaches 5% Vim = –40 dBm Vim = –40 dBm Vim = –40 dBm VOLUME (10 kΩ) max The pin 9 voltage at the point the auto-stop circuit operates 20 8.0 2 50 50 39 dB V mV dB dB dB mW mW % µV dB mV kΩ dB V [LED] LED drive current [GVN] Reference voltage Current division ratio Residual voltage The CONT pin voltage in speed up mode Reference voltage/voltage characteristics Current division ratio/voltage characteristics Reference voltage/current characteristics Current division ratio/current characteristics ILED Vref K Vsat Vcont ∆Vref /∆VCC Vref ∆K /∆VCC K ∆Vref /∆Im Vref ∆K /∆Im Vref The input current when shorted through a 300-Ω resistor Im = 100 mA Im = 50 – 100 mA VREF = CONT, Im = 200mA Im = 50 – 100 mA to 150 – 200 mA mA V V No. 5660-2/6 Allowable power dissipation, Pd max – mW LA4168M Ambient temperature, Ta – °C Block Diagram No. 5660-3/6 LA4168M Speed Test Circuit Diagram No. 5660-4/6 LA4168M Speed Sample Application Circuit For the record/playback switch described above, during playback the power supply ripple may be output from the REC OUT pin (pin 4) and influence the EQIN pin (pin 29). This problem can be minimized by adding a 5.6-kΩ resistor between pin 4 and pin 27. No. 5660-5/6 LA4168M ■ 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 July, 1997. Specifications and information herein are subject to change without notice. No. 5660-6/6