ILA7056B INTEGRAL | Alldatasheet
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Technical content
5 W MONO BTL AUDIO AMPLIFIER
The I LA7056B is a m ono Bridge-Tied Lo ad (BTL) output am plifier w ith DC volume control. It is designed for use in TV and monitors, but is also suitable for battery-fed p ortable recorders a nd radios. The de vice i s co ntained i n a 9 -pin medium power package.
ORDERING INFORMATION
(SOT110-1) TA = -40°C to 125° C A Missing Current Limiter (MCL) is built in. The MCL circuit is activated when the difference in current between the output terminal of each amplifier exceeds 100 mA (300 mA typ.). This level of 100 mA allows for headphone applications (single-ended).
FEATURES
- DC volume control
- Few external components
- Mute mode
- Thermal protection
- Short-circuit proof
- No switch-on and switch-off clicks
- Good overall stability
- Low power consumption
- Low HF radiation
- ESD protected on all pins
Figure 1. Pin connection Figure 2. Simplified Block Diagram
SYMBOL PARAMETER CONDITIONS MIN MAX UNIT VP supply voltage - 18 V V3, 5 input voltage pins 3 and 5 - 5 V IORM repetitive peak output current - 1.25 A IOSM non-repetitive peak output current - 1.5 A Ptot total power dissipation Tcase < 60ºC - 9 W Tamb operating ambient temperature -40 +85 °C Tstg storage temperature -55 +150 °C Tvj virtual junction temperature - +150 °C Tsc short-circuit time - 1 h
ELECTRICAL CHARACTERISTICS
VP = 12 V; VDC = 1.4 V; f = 1 kHz; RL = 16 Ω; Tamb = 25 °C; unless otherwise specified (see Fig.13). SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT Supply VP positive supply voltage 4.5 - 18 V Iq(tot) total quiescent current note 1; RL = ∞ - 9.2 13 mA Maximum gain (V5 ≥ 1.4 V) PO output power THD = 10%; RL = 16 Ω 3 3.5 - W THD total harmonic distortion PO = 0.5 W - 0.3 1 % Gv(max) maximum total voltage gain 39.5 40.5 41.5 dB VI input signal handling (RMS value) Gv(max) = 0 dB; THD <1% 1.0 - - V Vno noise output voltage (RMS value) note 2; f = 500 kHz - 210 - µV B bandwidth at –1dB - 0.02 to 300 - kHz SVRR supply voltage ripple rejection note 3 34 38 - dB ⏐∆VO⏐ DC output offset voltage ⏐V8 – V6⏐ - 0 200 mV ZI input impedance (pin 3) 15 20 25 kHz Mute position VO output voltage in mute position note 4; V5 = 0.4 V ±30 mV VI = 1.0 V - 30 40 µV DC volume control; note 5 Φ gain control 68 73.5 dB I5 control current V5 = 0 V 20 25 30 µA Notes 1. With a load connected to the outputs the quiescent current will increase, the maximum value of this increase being equal to the DC output offset voltage divided by RL. 2. The noise output voltage (RMS value) at f = 500 kHz is measured with RS = 0 Ω and B = 5 kHz. 3. The ripple rejection is measured with RS = 0 Ω and f = 100 Hz to 10 kHz. The ripple voltage VR of 200 mV (RMS value) is applied to the positive supply rail. 4. The noise output voltage (RMS value) is measured with RS = 5 kΩ unweighted. 5. The DC volume control can be configured in several ways. Two possible circuits are shown in Figs 14 and 15. The circuits at the volume control pin will influence the switch-on and switch-off behaviour and the maximum voltage gain.
Test and application diagram Fig.13 Application with potentiometer as volume controm Maximum gain = 34dB Fig.14 Application with potentiometer as volume controm Maximum gain = 40dB
- 9-Pin Plastic Power Single-in-Line (SIL-9MPF, SOT 110-1)