LM4675, LM4675SDBD, LM4675TLBD

www.ti.com

SNAS353C – AUGUST 2006 – REVISED MAY 2013

Electrical Characteristics

(1)(2) (continued)

The following specifications apply for AV = 2V/V (RI = 150kΩ), RL = 15µH + 8Ω + 15µH unless otherwise specified. Limits

apply for TA = 25°C.

LM4675

Units

Symbol

Parameter

Conditions

(Limits)

Typical(3)

Limit(4)(5)

VRipple = 200mVPP Sine,

fRipple = 217Hz, VDD = 3.6, 5V

82

dB

Inputs to AC GND, CI = 2μF

Power Supply Rejection Ratio

PSRR

(Input Referred)

VRipple = 200mVPP Sine,

fRipple = 1kHz, VDD = 3.6, 5V

80

dB

Inputs to AC GND, CI = 2μF

SNR

Signal to Noise Ratio

VDD = 5V, PO = 1WRMS

97

dB

VDD = 3.6V, f = 20Hz – 20kHz

Inputs to AC GND, CI = 2μF

28

μVRMS

Output Noise

No Weighting

εOUT

(Input Referred)

VDD = 3.6V, Inputs to AC GND

22

μVRMS

CI = 2μF, A Weighted

Common Mode Rejection

VDD = 3.6V, VRipple = 1VPP Sine

CMRR

Ratio

fRipple = 217Hz

80

dB

(Input Referred)

TWU

Wake-up Time

VDD = 3.6V

17

μs

TSD

Shutdown Time

140

μs

VDD = 3.6V, POUT = 400mW

89

%

RL = 8Ω

η

Efficiency

VDD = 5V, POUT = 1W

89

%

RL = 8Ω

External Components Description

(Figure 2)

Components

Functional Description

1.

CS

Supply bypass capacitor which provides power supply filtering. Refer to the POWER SUPPLY BYPASSING section

for information concerning proper placement and selection of the supply bypass capacitor.

2.

CI

Input AC coupling capacitor which blocks the DC voltage at the amplifier's input terminals.

Copyright © 2006–2013, Texas Instruments Incorporated

Submit Documentation Feedback

5

Product Folder Links: LM4675 LM4675SDBD LM4675TLBD