Electrical Characteristics V

The following specifications apply for V

Ω load unless otherwise specified. Limits apply to T

Symbol

Parameter

Conditions

LM4926

Units

(Limits)

Typ

(Note 6)

Limit

(Notes 7, 8)

X

TALK

Crosstalk

R

Ω,P

f = 1kHz

60

dB

Z

OUT

Output Impedance

Input Terminated

Input not terminated

∞

60

k

Ω

I

L

Input Leakage

nA

V

IN THRESH

Input Voltage Threshold

2.8

mVp

Note 1: All voltages are measured with respect to the GND pin unless otherwise specified.

Note 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 guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions that

guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit

is given; however, the typical value is a good indication of device performance.

de-rating currents for more information.

Note 4: Human body model, 100pF discharged through a 1.5k

Ω resistor.

Note 5: Machine Model, 220pF - 240pF discharged through all pins.

Note 6: Typicals are measured at 25˚C and represent the parametric norm.

Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).

Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

performance will be curtailed or the part may be permanently damaged.

Note 10: Human body model, 100pF discharged through a 1.5k

Ω resistor.

Note 11:

External Components Description (Figure 1)

Components

Functional Description

1.

C

i

Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a

high-pass filter with R

πR

an explanation of how to determine the value of C

2.

C

1

Flying capacitor. Low ESR ceramic capacitor (

≤100mΩ)

3.

C

2

Output capacitor. Low ESR ceramic capacitor (

≤100mΩ)

4.

C

3

Tantalum capacitor. 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.

5.

C

4

Ceramic capacitor. 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.

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