TS4962MEIJT Fast Delivery |IC PHOENIX CO.,LIMITED

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TS4962MEIJT
3 W filter-free class D audio power amplifier
January 2007 Rev 4 1/41
TS4962M
3W filter-free class D audio power amplifier
Features Operating from VCC= 2.4V to 5.5V Standby mode active low Output power: 3W into 4Ω and 1.75W into 8Ω
with 10% THD+N max and 5V power supply. Output power: 2.3W @5V or 0.75W @ 3.0V
into 4Ω with 1% THD+N max. Output power: 1.4W @5V or 0.45W @ 3.0V
into 8Ω with 1% THD+N max. Adjustable gain via external resistors Low current consumption 2mA @ 3V Efficiency: 88% typ. Signal to noise ratio: 85dB typ. PSRR: 63dB typ. @217Hz with 6dB gain PWM base frequency: 250kHz Low pop & click noise Thermal shutdown protection Available in flip-chip 9 x 300μm (Pb-free)
Description
The TS4962M is a differential Class-D BTL power
amplifier. It is able to drive up to 2.3W into a 4Ω
load and 1.4W into a 8Ω load at 5V. It achieves
outstanding efficiency (88%typ.) compared to
classical Class-AB audio amps.
The gain of the device can be controlled via two
external gain-setting resistors. Pop & click
reduction circuitry provides low on/off switch noise
while allowing the device to start within 5ms. A
standby function (active low) allows the reduction
of current consumption to 10nA typ.
Applications Cellular phone PDA Notebook PC
Contents TS4962M
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Contents Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Application component information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.1 Differential configuration principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2 Gain in typical application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.3 Common mode feedback loop limitations . . . . . . . . . . . . . . . . . . . . . . . . . 29
For example: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.4 Low frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.5 Decoupling of the circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.6 Wake-up time: (tWU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.7 Shutdown time (t STBY ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.8 Consumption in shutdown mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.9 Single-ended input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.10 Output filter considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.11 Different examples with summed inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Example 1: Dual differential inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Example 2: One differential input plus one single-ended input . . . . . . . . . . . . . . . 34 Demoboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Footprint recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
TS4962M Absolute maximum ratings
3/41 Absolute maximum ratings

Table 1. Absolute maximum ratings Caution: This device is not protected in the event of abnormal operating conditions, such as for example,
short-circuiting between any one output pin and ground, between any one output pin and VCC, and
between individual output pins. All voltage values are measured with respect to the ground pin. The magnitude of the input signal must never exceed VCC+ 0.3V / GND- 0.3V. The device is protected in case of over temperature by a thermal shutdown active @ 150°C. Exceeding the power derating curves during a long period causes abnormal operation. The magnitude of the standby signal must never exceed VCC+ 0.3V / GND- 0.3V.
Table 2. Operating conditions For VCC from 2.4V to 2.5V, the operating temperature range is reduced to 0°C≤ Tamb ≤70°C. For VCC from 2.4V to 2.5V, the common mode input range must be set at VCC/2. Without any signal on VSTBY, the device will be in standby. Minimum current consumption is obtained when VSTBY= GND. With heat sink surface= 125mm2.
Application component information TS4962M
4/41
2 Application component information

Figure 1. Typical application schematics
Table 3. Component information
TS4962M Electrical characteristics
5/41
3 Electrical characteristics
Table 4. VCC= +5V, GND= 0V , VIC =2.5V , tamb= 25°C (unless otherwise specified)

Partno	Mfg	Dc	Qty	Available	Descript
TS4962MEIJT	ST ?	N/a	20000	avai	3 W filter-free class D audio power amplifier