AN7198ZAN7198Z, Serwisówki TV, Układy Scalone
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ICs for Audio Common Use AN7198Z Dual 20 W BTL Power IC for Car Audio Overview The AN7198Z is an audio power IC developed for the sound output of car audio (Dual 20 W). A capacitor and a resistor between the output pin and GND to stop oscillation are built-in so that a space saving of set is possible. Also, it is incorporates an industry's first superior muting circuit which is free from shock noise, so that a shock noise design under the set transient condition can be made easily when the muting circuit is used together with its standby function. In addition, it is incorporating various protective cir- cuits to protect the IC from destruction by GND-open short circuit to GND and power supply surge which are the important subjects of power IC protection, and the IC will largely contribute to a high reliability design of equip- ment. Unit: mm 18.00±0.30 13.50±0.30 4.00±0.20 1.50±0.10 f 3.60±0.10 1 15 1.27 0.50 +0.20 –0.10 (0.61) R0.55 (1.80) (1.95) 0.25 +0.15 –0.05 (2.54) 19.00±0.30 19.30±0.30 HZIP015-P-0745A Features · Built-in various protection circuits (Realizing high breakdown voltage against destruction) Power supply surge breakdown voltage of 80 V or more Ground-open breakdown voltage of 16 V or more · Built-in standby function (Free from shock noise at STB-on/off) · Built-in muting function Free from shock noise at mute-on/off Adapting attenuator method, so that abnormal sound due to waveform deformation is not generated Attack time, recovery time of 50 ms or less · Reduction in external components No capacitors and resistors for oscillation stop are unnecessary It eliminates the need for NF and BS electrolytic capacitors Muting function is unnecessary Power supply choke coil is unnecessary · Provided with beep sound input pin · High sound quality design Applications · Car audio 1 n n n AN7198Z ICs for Audio Common Use n Block Diagram ch.1 GND 3 Ref. 14 ch.2 GND ch.1 Out (-) 4 13 ch.2 Out (-) Att Protection Cct. Att ch.1 Out (+) 2 Att.Con. 15 ch.2 Out (+) Att Att n Pin Description Pin No. Description Pin No. Description 1 Power supply 9 Grounding (input) 2 Ch.1 output (+) 10 Beep sound input 3 Grounding (output ch.1) 11 Ch.2 input 4 Ch.1 output (-) 12 Ripple filter 5 Standby 13 Ch.2 output (-) 6 Ch.1 input 14 Grounding (output ch.2) 7 Muting 15 Ch.2 output (+) 8 Grounding (board) n Absolute Maximum Ratings Parameter Symbol Ratings Unit Supply voltage * 2 V CC 25 V Peak supply voltage * 3 V surge 60 V Supply current I CC 9.0 A Power dissipation * 4 P D 59 W Operating ambient temperature * 1 T opr - 30 to + 85 °C Storage temperature *1 T stg - 55 to + 150 °C Note) * 1: T a = 25°C except operating ambient temperature and storage temperature. * 2: Without signal * 3: Time = 0.2 s * 4: T a = 85°C 2 ICs for Audio Common Use AN7198Z n Recommended Operating Range Parameter Symbol Ratings Unit Supply voltage V CC 8.0 to 18.0 V n Electrical Characteristics at V CC = 13.2 V, f = 1 kHz, T a = 25 ° C Parameter Symbol Conditions Min Typ Max Unit Quiescent current I CQ V IN = 0 mV, R L = 4 W ¾ 150 250 mA Standby current I STB V IN = 0 mV, R L = 4 W ¾ 1 10 mA Output noise voltage * 1 V NO R g = 10 k W , R L = 4 W ¾ 0.18 0.5 mV[rms] Voltage gain 1 G V1 V IN = 40 mV, R L = 4 W 32 34 36 dB Total harmonic distortion 1 THD 1 V IN = 40 mV, R L = 4 W ¾ 0.05 0.4 % Maximum output power 1 P O1 THD = 10%, R L = 4 W 16 18.5 ¾ W V CC = 14.4 V, R L = 4 W ¾ 22.0 ¾ W Ripple rejection ratio * 1 RR R L = 4 W, R g = 10 kW, V r = 1 V[rms] 60 65 ¾ dB f r = 1 kHz Channel balance CB V IN = 40 mV, R L = 4 W ¾ 0 1 dB Cross-talk * 1 CT V IN = 40 mV, R L = 4 W, R g = 10 kW 60 79 ¾ dB Output offset voltage V Off R g = 10 kW, R L = 4 W -250 0 250 mV Muting effect * 1 MT V O = 1 W, R L = 4 W 70 86 ¾ dB Input impedance Z i V IN = ± 0.3 V DC 24 30 36 kW Voltage gain 2 G V2 V IN = 40 mV, R L = 2 W 32 34 36 dB Total harmonic distortion 2 THD 2 V IN = 40 mV, R L = 2 W ¾ 0.08 0.5 % Maximum output power 2 P O2 THD = 10%, R L = 2 W 16 28 ¾ W Shock noise * 2 V S R L = 4 W, R g = 10 kW, V MUTE = 5 V -100 0 100 mV[p-0] V STB = on/off, 50 Hz HPF-on Total harmonics distortion 3 THD 3 V IN = 20 mV, f IN = 20 kHz ¾ 0.10 0.5 % R g = 10 kW, R L = ¥ Note) * 1: Measurement using a bandwidth 15 Hz to 30 kHz (12 dB/OCT) filter. * 2 : For V STB = on/off change over the standby terminal by the voltage of 0 V and 5 V at the time shown below. Standby terminal voltage 5 V 0 V 500 ms 500 ms 3 AN7198Z ICs for Audio Common Use n Terminal Equivalent Circuits Pin No. Equivalent circuits Description DC voltage 1 ¾ Supply voltage connection pin 13.2 V Power supply connection pin 2 Ch.1 output pin ( + ) 6.3 V 1 Pre-amp. Drive Circuit Ch.1 positive-phase output pin 2 Drive Circuit V REF = 6.3 V 3 15 kW AN7198Z: 600 W AN7199Z: 300 W 3 ¾ GND (Output) 0 V Grounding pin for ch.1 output 4 1 Ch.1 output pin ( - ) 6.3 V Pre-amp. Drive Circuit Ch.1 inverted-phase output pin 4 Drive Circuit V REF = 6.3 V 3 15 k W ɹ AN7198Z: 600 W AN7199Z: 300 W 5 Standby control pin 5 10 kW Standby changeover pin Threshold voltage approx. 2.1 V 2 kW 6 Ch.1 input pin 0 mV to 10 mV 6 200 W approx. 15 mA approx. 15 mA Ch.1 input signal applied pin Input impedance 30 k W 600 W 30 kW 4 ICs for Audio Common Use AN7198Z n Terminal Equivalent Circuits (continued) Pin No. Equivalent circuits Description DC voltage 7 Mute control pin ¾ 7 Mute changeover pin Threshold voltage approx. 2.1 V 200 W 8 ¾ GND (substrate) 0 V Substrate 9 ¾ GND (input) 0 V Grounding pin for input 10 R nf 15 kW Beep sound input pin 2.1 V V REF = 6.3 V R nf 2 Beep sound signal input pin Input impedance 15.3 kW 15 kW 7.8 kW 15 kW 10 R nf R nf 15 V REF = 6.3 V 15 kW R nf AN7198Z: 600W AN7199Z: 300W 11 Ch.2 input pin 0 mV to 10 mV 11 200 W approx. 15 mA approx. 15 mA Ch.2 input signal applied pin Input impedance 30 kW 600 W 30 kW 12 Ripple filter pin 13.0 V V CC 15 kW Output current 3 mA to 10 mA 12 350 mA 1.7 mA 20 k W 5 [ Pobierz całość w formacie PDF ] |
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