FAN7031MTFX Fairchild Semiconductor, FAN7031MTFX Datasheet

Audio Amplifiers 2W Power amplifier CMOS Stereo

FAN7031MTFX

Manufacturer Part Number

FAN7031MTFX

Description

Audio Amplifiers 2W Power amplifier CMOS Stereo

Manufacturer

Fairchild Semiconductor

Datasheet

1.FAN7031MTFX.pdf (20 pages)

Specifications of FAN7031MTFX

Product

Class-AB

Output Power

2.45 W

Available Set Gain

21.3 dB

Thd Plus Noise

0.2 %

Operating Supply Voltage

3 V, 5 V

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Audio Load Resistance

4 Ohms

Input Signal Type

Differential

Minimum Operating Temperature

- 40 C

Output Signal Type

Differential, Single

Supply Type

Single

Supply Voltage (max)

5.5 V

Supply Voltage (min)

2.7 V

Output Type

2-Channel Stereo

Package / Case

TSSOP-20 EP

Operational Class

Class-AB

Audio Amplifier Output Configuration

2-Channel Stereo

Output Power (typ)

2.45x2@4OhmW

Audio Amplifier Function

Headphone/Speaker

Total Harmonic Distortion

0.2@4Ohm@1W%

Single Supply Voltage (typ)

3/5V

Dual Supply Voltage (typ)

Not RequiredV

Power Supply Requirement

Single

Rail/rail I/o Type

Power Supply Rejection Ratio

70dB

Single Supply Voltage (min)

2.7V

Single Supply Voltage (max)

5.5V

Dual Supply Voltage (min)

Not RequiredV

Dual Supply Voltage (max)

Not RequiredV

Operating Temp Range

-40C to 85C

Operating Temperature Classification

Industrial

Mounting

Surface Mount

Pin Count

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

FAN7031MTFX

Manufacturer:

FAIRCHILD/仙童

Quantity:

20 000

Current page: 1 of 20
Download datasheet (471Kb)

Features

• 1.85W

• Selectable Gain Via Internal Gain Control Circuit Which

• Low Quiescent Current : Typical 5.5mA@5V

• Low Shutdown Current : Typical 0.04µA@5V

• Fully Differential Input, Which Immunes the Common

• Stereo Headphone Drive

• Active Low Shutdown Logic

• Guaranteed Stability Under No Load Condition

• Thermally Enhanced Surface-Mount 20TSSOP-EP

FAN7031

2W Stereo Power Amplifier with Four Selectable

Gain Setting and Headphone Drive

4Ω Load With Less Than 1% and 10% THD+N,

Respectively

Eliminates External Gain Setting Resistors : 6dB, 10.3dB,

15.6dB, 21.6dB(Select)

Mode Noise

Package

RMS

and 2.45W

RMS

Power Per Each Channel Into

Description

The FAN7031 is a dual fully differential power amplifier in a

20-pin TSSOP-EP thermally enhanced package. When

delivering 1.85W of continuous RMS power into 4Ω speaker

at 5V supply, the FAN7031 has less than 1% of THD+N over

the entire audible frequency range, 20Hz to 20kHz. To save

power consumption in the portable applications, the

FAN7031 provides shutdown function. Setting the shutdown

pin to ground level, the FAN7031 falls into shutdown mode

and consumes less than 4µA over all supply voltage range,

2.7V to 5.5V. Two gain setting pins(G0 and G1) control the

gain of the FAN7031. The gain is selectable to 6dB, 10dB,

15.6dB and 21.6dB. The FAN7031 provides the single-

ended(SE) operation by setting SE/BTL pin to above V

Using SE/BTL pin and a mechanical switch which provides

at the headphone jack, SE mode and BTL mode are automat-

ically determined. Additional components such as resistors

for gain setting and bootstrap capacitors are not needed,

making the FAN7031 well suited for portable sound systems

and other hand-held sound equipment. Target applications

include notebook and desktop computers and portable audio

equipment.

20-TSSOP-EP

www.fairchildsemi.com

Rev. 1.0.3

/2.

Related parts for FAN7031MTFX

FAN7031MTFX Summary of contents

Page 1

... Stereo Headphone Drive • Active Low Shutdown Logic • Guaranteed Stability Under No Load Condition • Thermally Enhanced Surface-Mount 20TSSOP-EP Package ©2004 Fairchild Semiconductor Corporation www.fairchildsemi.com Description The FAN7031 is a dual fully differential power amplifier in a 20-pin TSSOP-EP thermally enhanced package. When delivering 1.85W of continuous RMS power into 4Ω ...

Page 2

FAN7031 Internal Block Diagram RIN- RIN SE/BTL SD LIN- LIN+ 2 CONTROL BIAS TSD Gain Control VDD/2 SE/BTL Current Control Source ROUT+ ROUT- BYPASS LOUT+ LOUT- ...

Page 3

Pin Assignments GND G0 G1 LOUT+ LIN- PVDD2 RIN+ LOUT- LIN+ BYPASS Pin Description Pin No Symbol 1* GND LOUT+ 5 LIN- 6** PVDD2 7 RIN+ 8 LOUT- 9 LIN+ 10 BYPASS 11* GND 12 ...

Page 4

FAN7031 Absolute Maximum Ratings Parameter Maximum Supply Voltage Power Dissipation Operating Temperature Storage Temperature Junction Temperature Thermal Resistance (Junction to Ambient) ESD Rating (Human Body Model) Note1 : Rthja was derived using a JEDEC multi layer and single layer. Operating ...

Page 5

Electrical Characteristics (V = 5.0V 25°C, unless otherwise specified) DD Parameter Offset Voltage Supply Current Shutdown Current Output Power BTL Mode Gain SE Mode Gain Total Harmonic Distortion + Noise Power Supply Rejection Ratio Electrical Characteristics (V = ...

Page 6

FAN7031 Performance Characteristics 0.5 0.5 0.2 0.2 1kHz 1kHz 0.1 0.1 0.05 0.05 20Hz 20Hz 0.02 0.02 0.01 0.01 BTL mode BTL mode VDD=5V VDD=5V 0.005 0.005 RL=4ohm RL=4ohm 0.002 0.002 Av=6dB ...

Page 7

Performance Characteristics 10 10 Single-ended mode Single-ended mode 5 5 VDD=5V VDD=5V RL=32ohm RL=32ohm 2 2 Av=4.3dB Av=4.3dB 1 1 0.5 0.5 0.2 0.2 20kHz 20kHz 0.1 0.1 1kHz 1kHz 0.05 0.05 0.02 0.02 0.01 0.01 100u 100u 200u 200u ...

Page 8

FAN7031 Performance Characteristics 10 10 VDD=2.7V VDD=2. Output power = 250mW Output power = 250mW 2 2 RL=4ohm RL=4ohm 1 1 0.5 0.5 0.2 0.2 0.1 0.1 0.05 0.05 0.02 0.02 0.01 0.01 0.005 0.005 0.002 0.002 0.001 ...

Page 9

Performance Characteristics +0 +0 -10 -10 VDD=3.3V+/-5% VDD=3.3V+/-5% RL=4ohm RL=4ohm -20 -20 -30 -30 -40 -40 -50 -50 -60 -60 -70 -70 -80 -80 -90 -90 -100 -100 -110 -110 -120 -120 100 100 200 200 ...

Page 10

FAN7031 Performance Characteristics G0=VDD, G1=VDD G0=VDD, G1=VDD +20 +20 +15 +15 G0=VDD, G1=GND G0=VDD, G1=GND +10 +10 G0=GND, G1=VDD G0=GND, G1=VDD +5 +5 G0=GND, G1=GND G0=GND, G1=GND VDD=5V VDD=5V No load No load Cin=0.47uF Cin=0.47uF + ...

Page 11

Performance Characteristics 5.5m 5.5m 5.0m 5.0m BTL mode BTL mode 4.5m 4.5m 4.0m 4.0m 3.5m 3.5m VDD=5V VDD=5V 3.0m 3. SE/BTL Pin Voltage [V] SE/BTL Pin Voltage [V] Figure 31. IDD vs. SE/BTL Pin ...

Page 12

FAN7031 Performance Characteristics 2.0 2.0 BTL mode BTL mode f=1kHz f=1kHz RL=8ohm RL=8ohm 1.5 1.5 10% THD+N 10% THD+N 1.0 1.0 0.5 0.5 0.0 0.0 2.5 2.5 3.0 3.0 3.5 3.5 4.0 4.0 Supply Voltage [V] Supply Voltage [V] Figure ...

Page 13

Performance Characteristics 0.20 0.20 0.15 0.15 0.10 0.10 10% THD+N 10% THD+N 0.05 0.05 1% THD+N 1% THD+N 0.00 0. RL-Load Resistance [Ω] RL-Load Resistance [Ω] Figure 43. Output Power ...

Page 14

FAN7031 Typical Application Circuits Single-Ended Inputs 0.47µF Right channel Single ended Input 0.47µF VDD SD 10kΩ 10kΩ 0.47µF Left channel Single ended Input 0.47µF 14 VDD VDD 6,15,16 RIN- 17 RIN BIAS G0 2 & CONTROL ...

Page 15

Typical Application Circuits Differential Inputs 0.47µF Right channel Differential Input 0.47µF VDD SD 10kΩ 10kΩ 0.47µF Left channel Differential Input 0.47µF (Continued) VDD VDD 6,15,16 RIN- 17 RIN BIAS & 3 CONTROL 10kΩ LIN+ 9 ...

Page 16

FAN7031 Functional Description The FAN7031 is a stereo 2W amplifier capable of delivering 1.85W continuous RMS power into a 4-ohm load. This device has less than 0.75% THD+N across the entire frequency range at an output power of 1W. A ...

Page 17

BLT Mode of Operation vs. Single Ended Mode of Operation The FAN7031 offers both BTL (Bridge-Tied Load) and SE (Single Ended) operation. When SE/BTL pin is low, BTL operation is selected. In BTL operation, maximum output power is increased 4 ...

Page 18

FAN7031 Mechanical Dimensions Package 18 20TSSOP-EP Dimensions in millimeters ...

Page 19

Ordering Information Device FAN7031MTF Package Operating Temperature 20TSSOP-EP FAN7031 -40°C ~ +85°C 19 ...

Page 20

... FAN7031 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...

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