3W Mono BTL Amplifier
www.fairchildsemi.com
FAN7040
3W Mono BTL Amplifier with DC Volume Control
Features
• • • • • • • • • • DC Volume Cont...
Description
www.fairchildsemi.com
FAN7040
3W Mono BTL Amplifier with DC Volume Control
Features
DC Volume Control : +37dB ~ -52dB Few External Components Mute Mode Thermal Protection Short-Circuit Proof No Switch-On or Switch-Off Clicks Good Overall Stability Low Power Consumption Low HF Radiation ESD Protected On All Pins
Description
The FAN7040 is a mono Bridge-Tied Load(BTL) output amplifier with DC volume control. It is designed for use in TVs and monitors, but is also suitable for battery-fed portable recorders and radios. The device is contained in a 20-lead small outline package. 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 130mA. This level of 130mA allows for Single-Ended(SE) headphone applications.
20SOP
Applications
TVs and Monitors Portable Computers Desktop computers Low Voltage Audio Systems
1
Internal Block Diagram
VCC
4
FAN7040
IN
5
Power Amp
14
OUT+
VGA
17
OUT-
VC
7
Missing current protection DC Gain Bandgap Control Reference Over-Temperature Protection
1-3, 8-13, 16, 18 and 20 6
Power Amp
15
NC
SGND
PGND
Rev. 1.1.0
©2004 Fairchild Semiconductor Corporation
FAN7040
Pin Assignments
1
20
FAN7040
10
11
Pin Description
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol N.C. N.C. N.C. VCC IN SGND VC N.C. N.C. N.C. N.C. N.C. N.C. OUT+ PGND N.C. OUTN.C. N.C. N.C. O O I I I I/O No Connection No Conne...
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