ST TS4962M User Manual
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.
Pin connections
IN+ |
GND |
OUT- |
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1/A1 |
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2/A2 |
3/A3 |
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VDD |
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VDD |
GND |
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4/B1 |
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5/B2 |
6/B3 |
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IN- |
STBY |
OUT+ |
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7/C1 |
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8/C2 |
9/C3 |
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IN+: positive differential input
IN-: negative differential input
VDD: analog power supply
GND: power supply ground
STBY: standby pin (active low)
OUT+: positive differential output
OUT-: negative differential output
Block diagram
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B1 |
B2 |
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Stdby |
Vcc |
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C2 |
Internal |
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300k |
Bias |
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150k |
Out+ |
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C3 |
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C1 |
- |
Output |
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In- |
PWM |
H |
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In+ + |
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A1 |
Bridge |
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150k |
A3 |
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Out- |
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Oscillator |
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GND |
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A2 |
B3 |
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Applications
■Cellular phone
■PDA
■Notebook PC
January 2007 |
Rev 4 |
1/41 |
www.st.com
Contents |
TS4962M |
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Contents
1 |
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. 3 |
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2 |
Application component information . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
4 |
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3 |
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
5 |
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4 |
Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
16 |
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5 |
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
28 |
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5.1 |
Differential configuration principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
28 |
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5.2 |
Gain in typical application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
28 |
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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 (tSTBY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
6 |
Demoboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
35 |
7 |
Footprint recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
37 |
8 |
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
38 |
9 |
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
39 |
10 |
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
40 |
2/41
TS4962M |
Absolute maximum ratings |
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1 Absolute maximum ratings
Table 1. |
Absolute maximum ratings |
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Symbol |
Parameter |
Value |
Unit |
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VCC |
Supply voltage(1), (2) |
6 |
V |
Vin |
Input voltage (3) |
GND to VCC |
V |
Toper |
Operating free-air temperature range |
-40 to + 85 |
°C |
Tstg |
Storage temperature |
-65 to +150 |
°C |
Tj |
Maximum junction temperature |
150 |
°C |
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R |
Thermal resistance junction to ambient (4) |
200 |
°C/W |
thja |
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Pdiss |
Power dissipation |
Internally Limited(5) |
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ESD |
Human body model |
2 |
kV |
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ESD |
Machine model |
200 |
V |
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Latch-up |
Latch-up immunity |
200 |
mA |
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VSTBY |
Standby pin voltage maximum voltage (6) |
GND to VCC |
V |
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Lead temperature (soldering, 10sec) |
260 |
°C |
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1.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.
2.All voltage values are measured with respect to the ground pin.
3.The magnitude of the input signal must never exceed VCC + 0.3V / GND - 0.3V.
4.The device is protected in case of over temperature by a thermal shutdown active @ 150°C.
5.Exceeding the power derating curves during a long period causes abnormal operation.
6.The magnitude of the standby signal must never exceed VCC + 0.3V / GND - 0.3V.
Table 2. |
Operating conditions |
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Symbol |
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Parameter |
Value |
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Unit |
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VCC |
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Supply voltage(1) |
2.4 to 5.5 |
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V |
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VIC |
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Common mode input voltage range(2) |
0.5 to VCC - 0.8 |
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V |
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Standby voltage input: (3) |
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VSTBY |
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Device ON |
1.4 ≤ VSTBY |
≤ VCC |
V |
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Device OFF |
GND ≤VSTBY |
≤0.4 |
(4) |
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RL |
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Load resistor |
≥ 4 |
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Ω |
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R |
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Thermal resistance junction to ambient (5) |
90 |
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°C/W |
thja |
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1.For VCC from 2.4V to 2.5V, the operating temperature range is reduced to 0°C ≤Tamb ≤70°C.
2.For VCC from 2.4V to 2.5V, the common mode input range must be set at VCC/2.
3.Without any signal on VSTBY, the device will be in standby.
4.Minimum current consumption is obtained when VSTBY = GND.
5.With heat sink surface = 125mm2.
3/41
Application component information |
TS4962M |
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2 Application component information
Table 3. |
Component information |
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Component |
Functional description |
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Cs |
Bypass supply capacitor. Install as close as possible to the TS4962M to |
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minimize high-frequency ripple. A 100nF ceramic capacitor should be |
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added to enhance the power supply filtering at high frequency. |
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Rin |
Input resistor to program the TS4962M differential gain (gain = 300kΩ/Rin |
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with Rin in kΩ). |
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Input |
Due to common mode feedback, these input capacitors are optional. |
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However, they can be added to form with Rin a 1st order high pass filter with |
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capacitor |
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-3dB cut-off frequency = 1/(2*π*Rin*Cin). |
Figure 1. Typical application schematics
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Vcc |
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Vcc |
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B1 |
B2 |
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Cs |
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In+ |
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Stdby |
Vcc |
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1u |
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C2 |
Internal |
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300k |
Bias |
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150k |
Out+ |
GND |
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GND |
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C3 |
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Rin |
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GND |
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+ |
C1 |
- |
Output |
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Differential |
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In- |
PWM |
H |
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Input |
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In+ + |
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A1 |
Bridge |
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- |
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SPEAKER |
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In- |
Rin |
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A3 |
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Input |
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150k |
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Out- |
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capacitors |
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are optional |
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Oscillator |
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GND |
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GND |
TS4962 |
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A2 |
B3 |
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GND |
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Vcc |
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Vcc |
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B1 |
B2 |
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Cs |
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In+ |
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Stdby |
Vcc |
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1u |
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C2 |
Internal |
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4 Ohms LC Output Filter |
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300k |
Bias |
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150k |
Out+ |
GND |
15µH |
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GND |
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C3 |
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Rin |
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GND |
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+ |
C1 |
- |
Output |
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Differential |
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2µF |
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In- |
PWM |
H |
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Input |
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In+ + |
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- |
A1 |
Bridge |
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GND |
Load |
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In- |
Rin |
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2µF |
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A3 |
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Input |
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150k |
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15µH |
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Out- |
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capacitors |
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are optional |
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Oscillator |
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GND |
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GND |
TS4962 |
30µH |
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A2 |
B3 |
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GND |
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1µF |
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GND |
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1µF |
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30µH |
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8 Ohms LC Output Filter |
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4/41
TS4962M |
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Electrical characteristics |
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3 |
Electrical characteristics |
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Table 4. |
VCC = +5V, GND = 0V, VIC = 2.5V, tamb = 25°C (unless otherwise specified) |
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Symbol |
Parameter |
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Conditions |
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Min. |
Typ. |
Max. |
Unit |
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ICC |
Supply current |
No input signal, no load |
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2.3 |
3.3 |
mA |
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I |
Standby current (1) |
No input signal, V |
STBY |
= GND |
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10 |
1000 |
nA |
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STBY |
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VOO |
Output offset voltage |
No input signal, RL = 8Ω |
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3 |
25 |
mV |
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G=6dB |
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Pout |
Output power |
THD = 1% max, F = 1kHz, RL = 4Ω |
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2.3 |
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W |
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THD = 10% max, F = 1kHz, R |
= 4Ω |
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3 |
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L |
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THD = 1% max, F = 1kHz, RL = 8Ω |
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1.4 |
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THD = 10% max, F = 1kHz, RL = 8Ω |
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1.75 |
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Pout = 900mWRMS, G = 6dB, 20Hz < F < 20kHz |
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THD + N |
Total harmonic |
RL = 8Ω + 15µH, BW < 30kHz |
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1 |
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% |
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distortion + noise |
P = 1W |
, G = 6dB, F = 1kHz, |
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out |
RMS |
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RL = 8Ω + 15µH, BW < 30kHz |
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0.4 |
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Efficiency |
Efficiency |
Pout = 2WRMS, RL = 4Ω +≥ 15µH |
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78 |
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% |
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Pout =1.2WRMS, RL = 8Ω+≥ 15µH |
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88 |
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Power supply |
F = 217Hz, RL = 8Ω, G=6dB, |
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PSRR |
rejection ratio with |
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63 |
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dB |
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inputs grounded (2) |
Vripple = 200mVpp |
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CMRR |
Common mode |
F = 217Hz, RL = 8Ω, |
G = 6dB, |
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57 |
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dB |
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rejection ratio |
Vicm = 200mVpp |
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Rin in kΩ |
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273kΩ |
300kΩ |
327kΩ |
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Gain |
Gain value |
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----------------- |
----------------- |
----------------- |
V/V |
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R |
in |
R |
in |
R |
in |
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RSTBY |
Internal resistance |
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273 |
300 |
327 |
kΩ |
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from Standby to GND |
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FPWM |
Pulse width modulator |
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180 |
250 |
320 |
kHz |
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base frequency |
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SNR |
Signal to noise ratio |
A-weighting, Pout = 1.2W, RL = 8Ω |
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85 |
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dB |
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tWU |
Wake-up time |
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5 |
10 |
ms |
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tSTBY |
Standby time |
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5 |
10 |
ms |
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5/41
Electrical characteristics |
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TS4962M |
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Table 4. |
VCC = +5V, GND = 0V, VIC = 2.5V, tamb = 25°C (unless otherwise specified) (continued) |
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Symbol |
Parameter |
Conditions |
Min. |
Typ. |
Max. |
Unit |
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F = 20Hz to 20kHz, G = 6dB |
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Unweighted RL = 4Ω |
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85 |
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A-weighted RL = 4Ω |
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60 |
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Unweighted RL = 8Ω |
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86 |
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A-weighted RL = 8Ω |
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62 |
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Unweighted RL = 4Ω + 15µH |
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83 |
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A-weighted RL = 4Ω + 15µH |
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60 |
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VN |
Output voltage noise |
Unweighted RL = 4Ω + 30µH |
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88 |
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μVRMS |
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A-weighted RL = 4Ω + 30µH |
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64 |
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Unweighted RL = 8Ω + 30µH |
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78 |
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A-weighted RL = 8Ω + 30µH |
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57 |
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Unweighted RL = 4Ω + Filter |
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87 |
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A-weighted RL = 4Ω + Filter |
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65 |
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Unweighted RL = 4Ω + Filter |
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82 |
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A-weighted RL = 4Ω + Filter |
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59 |
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1.Standby mode is active when VSTBY is tied to GND.
2.Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to VCC @ F = 217Hz.
6/41
TS4962M |
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Electrical characteristics |
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Table 5. |
V |
CC |
= +4.2V, GND = 0V, V |
IC |
= 2.5V, T |
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= 25°C (unless otherwise specified)(1) |
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amb |
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Symbol |
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Parameter |
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Conditions |
Min. |
Typ. |
Max. |
Unit |
|
|||||||
|
|
|
|
|
|
|
|
|
|
||||||||
ICC |
Supply current |
No input signal, no load |
|
|
|
2.1 |
3 |
mA |
|
||||||||
I |
Standby current (2) |
No input signal, V |
|
= GND |
|
|
10 |
1000 |
nA |
|
|||||||
STBY |
|
|
|
|
|
STBY |
|
|
|
|
|
|
|
|
|
|
|
VOO |
Output offset voltage |
No input signal, RL = 8Ω |
|
|
|
3 |
25 |
mV |
|
||||||||
|
|
|
|
G=6dB |
|
|
|
|
|
|
|
|
|
|
|
|
|
Pout |
Output power |
THD = 1% max, F = 1kHz, RL = 4Ω |
|
|
1.6 |
|
|
W |
|
||||||||
THD = 10% max, F = 1kHz, RL = 4Ω |
|
|
2 |
|
|
|
|||||||||||
|
|
|
|
THD = 1% max, F = 1kHz, RL = 8Ω |
|
|
0.95 |
|
|
|
|
||||||
|
|
|
|
THD = 10% max, F = 1kHz, RL = 8Ω |
|
|
1.2 |
|
|
|
|
||||||
|
|
|
|
Pout = 600mWRMS, G = 6dB, 20Hz < F < 20kHz |
|
|
|
|
|
|
|
|
|||||
THD + N |
Total harmonic |
RL = 8Ω + 15µH, BW < 30kHz |
|
|
1 |
|
|
% |
|
||||||||
distortion + noise |
P = 700mW , G = 6dB, F = 1kHz, |
|
|
|
|
|
|
|
|||||||||
|
|
|
|
out |
|
RMS |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RL = 8Ω + 15µH, BW < 30kHz |
|
|
0.35 |
|
|
|
|
||||||
Efficiency |
Efficiency |
Pout = 1.45WRMS, RL = 4Ω +≥ 15µH |
|
|
78 |
|
|
% |
|
||||||||
|
|
|
|
Pout =0.9WRMS, RL = 8Ω+≥ 15µH |
|
|
88 |
|
|
|
|
||||||
|
Power supply |
F = 217Hz, RL = 8Ω, G=6dB, |
|
|
|
|
|
|
|
|
|||||||
PSRR |
rejection ratio with |
|
|
63 |
|
|
dB |
|
|||||||||
|
inputs grounded (3) |
Vripple = 200mVpp |
|
|
|
|
|
|
|
|
|
|
|
||||
CMRR |
Common mode |
F = 217Hz, RL = 8Ω, |
G = 6dB, |
|
|
57 |
|
|
dB |
|
|||||||
|
rejection ratio |
Vicm = 200mVpp |
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
Rin in kΩ |
|
|
|
|
273kΩ |
300kΩ |
327kΩ |
|
|
||||
Gain |
Gain value |
|
|
|
|
----------------- |
----------------- |
----------------- |
V/V |
|
|||||||
|
|
|
|
R |
in |
R |
in |
R |
in |
|
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
RSTBY |
Internal resistance |
|
|
|
|
|
|
273 |
300 |
327 |
kΩ |
|
|||||
from Standby to GND |
|
|
|
|
|
|
|
||||||||||
FPWM |
Pulse width modulator |
|
|
|
|
|
|
180 |
250 |
320 |
kHz |
|
|||||
base frequency |
|
|
|
|
|
|
|
||||||||||
SNR |
Signal to noise ratio |
A-weighting, Pout = 0.9W, RL = 8Ω |
|
|
85 |
|
|
dB |
|
||||||||
tWU |
Wake-uptime |
|
|
|
|
|
|
|
|
5 |
10 |
ms |
|
||||
tSTBY |
Standby time |
|
|
|
|
|
|
|
|
5 |
10 |
ms |
|
||||
7/41
Electrical characteristics |
|
|
|
TS4962M |
|
||
|
|
|
|
|
|
|
|
Table 5. |
VCC = +4.2V, GND = 0V, VIC = 2.5V, Tamb = 25°C (unless otherwise specified)(1) |
|
|||||
Symbol |
Parameter |
Conditions |
Min. |
Typ. |
Max. |
Unit |
|
|
|
|
|
|
|
|
|
|
|
F = 20Hz to 20kHz, G = 6dB |
|
|
|
|
|
|
|
Unweighted RL = 4Ω |
|
85 |
|
|
|
|
|
A-weighted RL = 4Ω |
|
60 |
|
|
|
|
|
Unweighted RL = 8Ω |
|
86 |
|
|
|
|
|
A-weighted RL = 8Ω |
|
62 |
|
|
|
|
|
Unweighted RL = 4Ω + 15µH |
|
83 |
|
|
|
|
|
A-weighted RL = 4Ω + 15µH |
|
60 |
|
|
|
VN |
Output voltage noise |
Unweighted R = 4Ω + 30µH |
|
88 |
|
μVRMS |
|
|
|
L |
|
|
|
|
|
|
|
A-weighted RL = 4Ω + 30µH |
|
64 |
|
|
|
|
|
Unweighted RL = 8Ω + 30µH |
|
78 |
|
|
|
|
|
A-weighted RL = 8Ω + 30µH |
|
57 |
|
|
|
|
|
Unweighted RL = 4Ω + Filter |
|
87 |
|
|
|
|
|
A-weighted RL = 4Ω + Filter |
|
65 |
|
|
|
|
|
Unweighted RL = 4Ω + Filter |
|
82 |
|
|
|
|
|
A-weighted RL = 4Ω + Filter |
|
59 |
|
|
|
1.All electrical values are guaranteed with correlation measurements at 2.5V and 5V.
2.Standby mode is active when VSTBY is tied to GND.
3.Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to VCC @ F = 217Hz.
8/41
TS4962M |
|
|
|
|
|
|
|
|
|
|
Electrical characteristics |
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
Table 6. |
V |
CC |
= +3.6V, GND = 0V, V |
IC |
= 2.5V, T |
|
|
= 25°C (unless otherwise specified)(1) |
|
|||||||
|
|
|
|
amb |
|
|
|
|
|
|
|
|
||||
Symbol |
|
Parameter |
|
|
Conditions |
Min. |
Typ. |
Max. |
Unit |
|||||||
|
|
|
|
|
|
|
|
|
||||||||
ICC |
Supply current |
No input signal, no load |
|
|
|
2 |
2.8 |
mA |
||||||||
I |
Standby current (2) |
No input signal, V |
|
= GND |
|
|
10 |
1000 |
nA |
|||||||
STBY |
|
|
|
|
|
STBY |
|
|
|
|
|
|
|
|
|
|
VOO |
Output offset voltage |
No input signal, RL = 8Ω |
|
|
|
3 |
25 |
mV |
||||||||
|
|
|
|
G=6dB |
|
|
|
|
|
|
|
|
|
|
|
|
Pout |
Output power |
THD = 1% max, F = 1kHz, RL = 4Ω |
|
|
1.15 |
|
|
W |
||||||||
THD = 10% max, F = 1kHz, RL = 4Ω |
|
|
1.51 |
|
|
|||||||||||
|
|
|
|
THD = 1% max, F = 1kHz, RL = 8Ω |
|
|
0.7 |
|
|
|
||||||
|
|
|
|
THD = 10% max, F = 1kHz, RL = 8Ω |
|
|
0.9 |
|
|
|
||||||
|
|
|
|
Pout = 500mWRMS, G = 6dB, 20Hz < F< 20kHz |
|
|
|
|
|
|
|
|||||
THD + N |
Total harmonic |
RL = 8Ω + 15µH, BW < 30kHz |
|
|
1 |
|
|
% |
||||||||
distortion + noise |
P = 500mW , G = 6dB, F = 1kHz, |
|
|
|
|
|
|
|||||||||
|
|
|
|
out |
|
RMS |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RL = 8Ω + 15µH, BW < 30kHz |
|
|
0.27 |
|
|
|
||||||
Efficiency |
Efficiency |
Pout = 1WRMS, RL = 4Ω +≥ 15µH |
|
|
78 |
|
|
% |
||||||||
|
|
|
|
Pout =0.65WRMS, RL = 8Ω+≥ 15µH |
|
|
88 |
|
|
|
||||||
|
Power supply |
F = 217Hz, RL = 8Ω, G=6dB, |
|
|
|
|
|
|
|
|||||||
PSRR |
rejection ratio with |
|
|
62 |
|
|
dB |
|||||||||
|
inputs grounded (3) |
Vripple = 200mVpp |
|
|
|
|
|
|
|
|
|
|
||||
CMRR |
Common mode |
F = 217Hz, RL = 8Ω, |
G = 6dB, |
|
|
56 |
|
|
dB |
|||||||
|
rejection ratio |
Vicm = 200mVpp |
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
Rin in kΩ |
|
|
|
|
273kΩ |
300kΩ |
327kΩ |
|
||||
Gain |
Gain value |
|
|
|
|
----------------- |
----------------- |
----------------- |
V/V |
|||||||
|
|
|
|
R |
in |
R |
in |
R |
in |
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
RSTBY |
Internal resistance |
|
|
|
|
|
|
273 |
300 |
327 |
kΩ |
|||||
from Standby to GND |
|
|
|
|
|
|
||||||||||
FPWM |
Pulse width modulator |
|
|
|
|
|
|
180 |
250 |
320 |
kHz |
|||||
base frequency |
|
|
|
|
|
|
||||||||||
SNR |
Signal to noise ratio |
A-weighting, Pout = 0.6W, RL = 8Ω |
|
|
83 |
|
|
dB |
||||||||
tWU |
Wake-uptime |
|
|
|
|
|
|
|
|
5 |
10 |
ms |
||||
tSTBY |
Standby time |
|
|
|
|
|
|
|
|
5 |
10 |
ms |
||||
9/41
Electrical characteristics |
|
|
|
TS4962M |
||
|
|
|
|
|
|
|
Table 6. |
VCC = +3.6V, GND = 0V, VIC = 2.5V, Tamb = 25°C (unless otherwise specified)(1) |
|||||
Symbol |
Parameter |
Conditions |
Min. |
Typ. |
Max. |
Unit |
|
|
|
|
|
|
|
|
|
F = 20Hz to 20kHz, G = 6dB |
|
|
|
|
|
|
Unweighted RL = 4Ω |
|
83 |
|
|
|
|
A-weighted RL = 4Ω |
|
57 |
|
|
|
|
Unweighted RL = 8Ω |
|
83 |
|
|
|
|
A-weighted RL = 8Ω |
|
61 |
|
|
|
|
Unweighted RL = 4Ω + 15µH |
|
81 |
|
|
|
|
A-weighted RL = 4Ω + 15µH |
|
58 |
|
|
VN |
Output voltage noise |
Unweighted R = 4Ω + 30µH |
|
87 |
|
μVRMS |
|
|
L |
|
|
|
|
|
|
A-weighted RL = 4Ω + 30µH |
|
62 |
|
|
|
|
Unweighted RL = 8Ω + 30µH |
|
77 |
|
|
|
|
A-weighted RL = 8Ω + 30µH |
|
56 |
|
|
|
|
Unweighted RL = 4Ω + Filter |
|
85 |
|
|
|
|
A-weighted RL = 4Ω + Filter |
|
63 |
|
|
|
|
Unweighted RL = 4Ω + Filter |
|
80 |
|
|
|
|
A-weighted RL = 4Ω + Filter |
|
57 |
|
|
1.All electrical values are guaranteed with correlation measurements at 2.5V and 5V.
2.Standby mode is active when VSTBY is tied to GND.
3.Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to VCC @ F = 217Hz.
10/41
TS4962M |
|
|
|
|
|
|
|
|
|
|
Electrical characteristics |
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
Table 7. |
V |
CC |
= +3V, GND = 0V, V |
IC |
= 2.5V, T |
|
= 25°C (unless otherwise specified)(1) |
|
||||||||
|
|
|
|
|
amb |
|
|
|
|
|
|
|
|
|||
Symbol |
|
Parameter |
|
|
|
Conditions |
Min. |
Typ. |
Max. |
Unit |
||||||
|
|
|
|
|
|
|
|
|||||||||
ICC |
Supply current |
No input signal, no load |
|
|
1.9 |
2.7 |
mA |
|||||||||
I |
Standby current (2) |
No input signal, V |
|
= GND |
|
|
10 |
1000 |
nA |
|||||||
STBY |
|
|
|
|
|
|
STBY |
|
|
|
|
|
|
|
|
|
VOO |
Output offset voltage |
No input signal, RL = 8Ω |
|
|
3 |
25 |
mV |
|||||||||
|
|
|
|
G=6dB |
|
|
|
|
|
|
|
|
|
|
|
|
Pout |
Output power |
THD = 1% max, F = 1kHz, RL = 4Ω |
|
|
0.75 |
|
|
W |
||||||||
THD = 10% max, F = 1kHz, RL = 4Ω |
|
|
1 |
|
|
|||||||||||
|
|
|
|
THD = 1% max, F = 1kHz, RL = 8Ω |
|
|
0.5 |
|
|
|
||||||
|
|
|
|
THD = 10% max, F = 1kHz, RL = 8Ω |
|
|
0.6 |
|
|
|
||||||
|
|
|
|
Pout = 350mWRMS, G = 6dB, 20Hz < F < 20kHz |
|
|
|
|
|
|
|
|||||
THD + N |
Total harmonic |
RL = 8Ω + 15µH, BW < 30kHz |
|
|
1 |
|
|
% |
||||||||
distortion + noise |
P = 350mW |
, G = 6dB, F = 1kHz, |
|
|
|
|
|
|
||||||||
|
|
|
|
out |
|
|
RMS |
|
|
|
|
|
|
|
|
|
|
|
|
|
RL = 8Ω + 15µH, BW < 30kHz |
|
|
0.21 |
|
|
|
||||||
Efficiency |
Efficiency |
Pout = 0.7WRMS, RL = 4Ω +≥ 15µH |
|
|
78 |
|
|
% |
||||||||
|
|
|
|
Pout = 0.45WRMS, RL = 8Ω+≥ 15µH |
|
|
88 |
|
|
|
||||||
|
Power supply |
F = 217Hz, RL = 8Ω, G=6dB, |
|
|
|
|
|
|
|
|||||||
PSRR |
rejection ratio with |
|
|
60 |
|
|
dB |
|||||||||
|
inputs grounded (3) |
Vripple = 200mVpp |
|
|
|
|
|
|
|
|
|
|||||
CMRR |
Common mode |
F = 217Hz, RL = 8Ω, |
G = 6dB, |
|
|
54 |
|
|
dB |
|||||||
|
rejection ratio |
Vicm = 200mVpp |
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
Rin in kΩ |
|
|
|
273kΩ |
300kΩ |
327kΩ |
|
|||||
Gain |
Gain value |
|
|
|
----------------- |
----------------- |
----------------- |
V/V |
||||||||
|
|
|
R |
in |
R |
in |
R |
in |
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
RSTBY |
Internal resistance |
|
|
|
|
|
|
273 |
300 |
327 |
kΩ |
|||||
from Standby to GND |
|
|
|
|
|
|
||||||||||
FPWM |
Pulse width modulator |
|
|
|
|
|
|
180 |
250 |
320 |
kHz |
|||||
base frequency |
|
|
|
|
|
|
||||||||||
SNR |
Signal to noise ratio |
A-weighting, Pout = 0.4W, RL = 8Ω |
|
|
82 |
|
|
dB |
||||||||
tWU |
Wake-up time |
|
|
|
|
|
|
|
|
5 |
10 |
ms |
||||
tSTBY |
Standby time |
|
|
|
|
|
|
|
|
5 |
10 |
ms |
||||
11/41
Electrical characteristics |
|
|
|
TS4962M |
||
|
|
|
|
|
|
|
Table 7. |
VCC = +3V, GND = 0V, VIC = 2.5V, Tamb = 25°C (unless otherwise specified)(1) |
|||||
Symbol |
Parameter |
Conditions |
Min. |
Typ. |
Max. |
Unit |
|
|
|
|
|
|
|
|
|
f = 20Hz to 20kHz, G = 6dB |
|
|
|
|
|
|
Unweighted RL = 4Ω |
|
83 |
|
|
|
|
A-weighted RL = 4Ω |
|
57 |
|
|
|
|
Unweighted RL = 8Ω |
|
83 |
|
|
|
|
A-weighted RL = 8Ω |
|
61 |
|
|
|
|
Unweighted RL = 4Ω + 15µH |
|
81 |
|
|
|
|
A-weighted RL = 4Ω + 15µH |
|
58 |
|
|
VN |
Output Voltage Noise |
Unweighted R = 4Ω + 30µH |
|
87 |
|
μVRMS |
|
|
L |
|
|
|
|
|
|
A-weighted RL = 4Ω + 30µH |
|
62 |
|
|
|
|
Unweighted RL = 8Ω + 30µH |
|
77 |
|
|
|
|
A-weighted RL = 8Ω + 30µH |
|
56 |
|
|
|
|
Unweighted RL = 4Ω + Filter |
|
85 |
|
|
|
|
A-weighted RL = 4Ω + Filter |
|
63 |
|
|
|
|
Unweighted RL = 4Ω + Filter |
|
80 |
|
|
|
|
A-weighted RL = 4Ω + Filter |
|
57 |
|
|
1.All electrical values are guaranteed with correlation measurements at 2.5V and 5V.
2.Standby mode is active when VSTBY is tied to GND.
3.Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to VCC @ F = 217Hz.
12/41
TS4962M |
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Electrical characteristics |
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Table 8. |
VCC = +2.5V, GND = 0V, VIC = 2.5V, Tamb = 25°C (unless otherwise specified) |
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Symbol |
Parameter |
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Conditions |
Min. |
Typ. |
Max. |
Unit |
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ICC |
Supply current |
No input signal, no load |
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1.7 |
2.4 |
mA |
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I |
Standby current (1) |
No input signal, V |
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= GND |
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10 |
1000 |
nA |
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STBY |
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STBY |
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VOO |
Output offset voltage |
No input signal, RL = 8Ω |
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3 |
25 |
mV |
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G=6dB |
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Pout |
Output power |
THD = 1% max, F = 1kHz, RL = 4Ω |
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0.52 |
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W |
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THD = 10% max, F = 1kHz, RL = 4Ω |
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0.71 |
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THD = 1% max, F = 1kHz, RL = 8Ω |
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0.33 |
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THD = 10% max, F = 1kHz, RL = 8Ω |
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0.42 |
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Pout = 200mWRMS, G = 6dB, 20Hz < F< 20kHz |
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THD + N |
Total harmonic |
RL = 8Ω + 15µH, BW < 30kHz |
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1 |
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% |
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distortion + noise |
P = 200W |
, G = 6dB, F = 1kHz, |
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out |
RMS |
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RL = 8Ω + 15µH, BW < 30kHz |
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0.19 |
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Efficiency |
Efficiency |
Pout = 0.47WRMS, RL = 4Ω +≥ 15µH |
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78 |
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% |
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Pout = 0.3WRMS, RL = 8Ω+≥ 15µH |
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88 |
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Power supply |
F = 217Hz, RL = 8Ω, G=6dB, |
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PSRR |
rejection ratio with |
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60 |
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dB |
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inputs grounded (2) |
Vripple = 200mVpp |
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CMRR |
Common mode |
F = 217Hz, RL = 8Ω, |
G = 6dB, |
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54 |
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dB |
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rejection ratio |
Vicm = 200mVpp |
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Rin in kΩ |
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273kΩ |
300kΩ |
327kΩ |
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Gain |
Gain value |
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----------------- |
----------------- |
----------------- |
V/V |
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R |
in |
R |
in |
R |
in |
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RSTBY |
Internal resistance |
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273 |
300 |
327 |
kΩ |
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from Standby to GND |
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FPWM |
Pulse width modulator |
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180 |
250 |
320 |
kHz |
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base frequency |
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SNR |
Signal to noise ratio |
A-weighting, Pout = 1.2W, RL = 8Ω |
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80 |
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dB |
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tWU |
Wake-up time |
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5 |
10 |
ms |
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tSTBY |
Standby time |
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5 |
10 |
ms |
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13/41
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