LM4985, LM4985TMEVAL

SNAS346B – MAY 2006 – REVISED MAY 2006

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(1) (2)

25°C.

Symbol

Parameter

Conditions

LM4985

Units

(Limits)

Single-Channel no load OCL

1.8

3.1

Quiescent Power Supply Current

Single-Channel no load C-CUPL

1.0

mA (max)

Dual-Channel no load OCL

2.1

4

Dual-Channel no load C-CUPL

2.3

3

Shutdown Current

0.1

1.0

µA (max)

Logic Voltage Input High

2.52

V (min)

Logic Voltage Input Low

1.08

V (max)

68

60

Output Power

70

mW (min)

38

34

41

0.06

0.03

THD+N

Total Harmonic Distortion + Noise

%

0.03

0.03

Output Noise Voltage

15

µV

(6)

55

OCL

77

C-CUPL

63

PSRR

Power Supply Rejection Ratio

dB (min)

OCL

76

57

C-CUPL

62

51

dB

56

Xtalk

Channel-to-Channel Crosstalk

58

dB

69

(1)

All voltages are measured with respect to the GND pin 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 but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical

specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the

Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, 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 specified to Texas Instruments' AOQL (Average Outgoing Quality Level).

(5)

Datasheet min/max specification limits are specified by design, test, or statistical analysis.

(6)

10

Ω terminated input.

6

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