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Micro Technology

CM8601 Datasheet Preview

CM8601 Datasheet

3 Watt Audio Power Amplifier

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CM8601 pdf
深圳市天罡微科技有限公司
CM8601
3 Watt Audio Power Amplifier with Selectable Shutdown Logic Level
General Description
The CM8601 is an audio power amplifier primarily designed for demanding applications in mobile phones and other por-
table communication device applications. It is capable of delivering 1.25 watts of continuous average power to an 8 BTL
load and 2 watts of continuous average power (LD and MH only) to a 4ΩBTL load with less than 1% distortion
(THD+N+N) from a 5.5VDC power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount
of external components. The CM8601 does not require output coupling capacitors or bootstrap capacitors, and therefore is
ideally suited for mobile phone and other low voltage appli- cations where minimal power consumption is a primary re-
quirement.
The CM8601 features a low-power consumption shutdown mode. To facilitate this, Shutdown may be enabled by either
logic high or low depending on mode selection. Driving the shutdown mode pin either high or low enables the shutdown
pin to be driven in a likewise manner to enable shutdown.
The CM8601 contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-
on and turn-off transitions.
The CM8601 is unity-gain stable and can be configured by external gain-setting resistors.
Key Specifications
Ø Improved PSRR at 217Hz & 1KHz
62dB
Ø Power Output at 5.0V,
1% THD+N,
4Ω (LD and MH only)
3W (typ)
Ø Power Output at 5.0V, 1% THD+N, 8Ω 1.25W (typ)
Features
Available in space-saving packages:SOP-8
Ø Ultra low current shutdown mode
Ø Improved pop & click circuitry eliminates noise
during turn-on and turn-off transitions
Ø 1.8 - 8.0V operation
Applications
Ø Mobile Phones
Ø PDAs
Ø Power Output at 3.0V, 1% THD+N, 4Ω 600mW (typ)
Ø Power Output at 3.0V, 1% THD+N, 8Ω 425mW (typ)
Ø Shutdown Current
0.1µA (typ)
Ø No output coupling capacitors, snubber
networks or bootstrap capacitors required
Ø Unity-gain stable
Ø External gain configuration capability
Ø User selectable shutdown High or Low logic Level
Ø Portable electronic device
Connection Diagrams
SOP-8
1 页 共 16



Micro Technology
Micro Technology

CM8601 Datasheet Preview

CM8601 Datasheet

3 Watt Audio Power Amplifier

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CM8601 pdf
深圳市天罡微科技有限公司
CM8601
Package
LD MH MM ITL
Shutdown Mode
Selectable
Selectable
Low
Low
Typical Power Output at
5V,1% THD+N
3W
(RL = 4Ω)
3W
(RL = 4Ω)
1.25W
(RL = 8Ω)
1.25W
(RL = 8Ω)
. A SD_MODE select pin determines the Shutdown Mode for the LD and MH packages, whether it is an Asserted High
or an Asserted Low device, to activate shutdown.
. The SD_MODE select pin is not available with the MM and ITL packaged devices. Shutdown occurs only with a low
assertion.
Typical Application
Note: MM and ITL packaged devices are active low only; Shutdown Mode pin is internally tied to GND.
FIGURE 1. Typical Audio Amplifier Application Circuit (LD and MH)
Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (Note 11)
Storage Temperature
Input Voltage
6.0V
65°C to +150°C
0.3V to VDD +0.3V
Power Dissipation (Notes 3, 12)
Internally Limited
ESD Susceptibility (Note 4)
2000V
ESD Susceptibility (Note 5)
Junction Temperature
200V
150°C
Thermal Resistance
θJC (MSOP)
θJA (MSOP)
θJA (9 Bump micro SMD) (Note 15)
56°C/W
190°C/W
180°C/W
2 页 共 16


Part Number CM8601
Description 3 Watt Audio Power Amplifier
Maker Micro Technology
Total Page 16 Pages
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