LM3886TFSLASHNOPB datasheet(4/31 Pages) TI1

4 / 31 page

LM3886

SNAS091C – MAY 1999 – REVISED MARCH 2013

www.ti.com

Electrical Characteristics

(1) (2)

The following specifications apply for V

+ = +28V, V− = −28V, I

MUTE = −0.5 mA with RL = 4Ω unless otherwise specified. Limits

apply for TA = 25°C.

LM3886

Units

Parameter

Test Conditions

(Limits)

Typical (3)

Limit (4)

|V+| + |V−|

Power Supply Voltage (5)

Vpin7 − V

− ≥ 9V

V (min)

V (max)

Mute Attenuation

Pin 8 Open or at 0V, Mute: On

Current out of Pin 8 > 0.5 mA,

115

dB (min)

Mute: Off

(6)

Output Power (Continuous Average)

THD + N = 0.1% (max)

f = 1 kHz; f = 20 kHz

|V+| = |V−| = 28V, RL = 4Ω

W (min)

|V+| = |V−| = 28V, RL = 8Ω

W (min)

|V+| = |V−| = 35V, RL = 8Ω

Peak PO

Instantaneous Peak Output Power

135

THD + N

Total Harmonic Distortion Plus Noise

60W, RL = 4Ω,

30W, RL = 8Ω,

0.03

20 Hz

≤ f ≤ 20 kHz

0.03

AV = 26 dB

SR (6)

Slew Rate (7)

VIN = 2.0Vp-p, tRISE = 2 ns

μs (min)

I+(6)

Total Quiescent Power Supply Current

VCM = 0V, Vo = 0V, Io = 0A

mA (max)

VOS

(8)

Input Offset Voltage

VCM = 0V, Io = 0 mA

mV (max)

Input Bias Current

VCM = 0V, Io = 0 mA

0.2

μA (max)

IOS

Input Offset Current

VCM = 0V, Io = 0 mA

0.01

0.2

μA (max)

Output Current Limit

|V+| = |V−| = 20V, tON = 10 ms, VO = 0V

11.5

A (min)

Vod

(8)

Output Dropout Voltage (9)

|V+–VO|, V

+ = 28V, I

o = +100 mA

1.6

2.0

V (max)

|VO–V

−|, V− = −28V, I

o = −100 mA

2.5

3.0

V (max)

PSRR (8)

Power Supply Rejection Ratio

V+ = 40V to 20V, V− =

−40V,

120

dB (min)

VCM = 0V, Io = 0 mA

V+ = 40V, V− =

−40V to −20V,

105

dB (min)

VCM = 0V, Io = 0 mA

CMRR (8)

Common Mode Rejection Ratio

V+ = 60V to 20V, V− =

−20V to −60V,

110

dB (min)

VCM = 20V to −20V, Io = 0 mA

AVOL

(8)

Open Loop Voltage Gain

|V+| = |V−| = 28V, RL = 2 kΩ, ΔVO = 40V

115

dB (min)

GBWP

Gain-Bandwidth Product

|V+| = |V−| = 30V

MHz (min)

fO = 100 kHz, VIN = 50 mVrms

eIN

(6)

Input Noise

IHF—A Weighting Filter

2.0

μV (max)

RIN = 600Ω (Input Referred)

SNR

Signal-to-Noise Ratio

PO = 1W, A-Weighted,

92.5

Measured at 1 kHz, RS = 25Ω

PO = 60W, A-Weighted,

110

Measured at 1 kHz, RS = 25Ω

IMD

Intermodulation Distortion Test

60 Hz, 7 kHz, 4:1 (SMPTE)

0.004

60 Hz, 7 kHz, 1:1 (SMPTE)

0.009

(1)

All voltages are measured with respect to the GND pin (pin 7), unless otherwise specified.

(2)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is functional. Electrical Characteristics state DC and AC electrical specifications under particular test conditions and

specific performance limits. This assumes that the device is within the Operating Ratings. The typical value is a good indication of

device performance.

(3)

Typicals are measured at 25°C and represent the parametric norm.

(4)

Limits are speficied to AOQL (Average Outgoing Quality Level).

(5)

V− must have at least

−9V at its pin with reference to ground in order for the under-voltage protection circuitry to be disabled.

(6)

AC Electrical Test; refer to Test Circuit #2 -AC Electrical Test Circuit.

(7)

The feedback compensation network limits the bandwidth of the closed-loop response and so the slew rate will be reduced due to the

high frequency roll-off. Without feedback compensation, the slew rate is typically larger.

(8)

DC Electrical Test; refer to Test Circuit #1- DC Electrical Test Circuit.

(9)

The output dropout voltage is the supply voltage minus the clipping voltage. Refer to Figure 14 in Typical Performance Characteristics.

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