STLC1512

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Table 4. Power Amplifier Performance Specifications

Unless otherwise specified nom specs apply to the nom conditions in attribute and the max and min conditions are

defined by the process and other spec limits that give these worst case corners.

Description

min

nom

max

Goal

Units

Comments

Quiescent current at PAOP/

10

15

18

mA

The spec is measured as the

sum of the currents at

POAP1+PAOP2 or

PAON1+PAON2.

Total quiescent current at

20

30

36

mA

Measured at the center tap of

the transformer.

15

µA

Measured at pin PAIP/PAIN.

This parameter cannot be

measured very accurately.

Minimum Voltage at PAOP/

High Current Drive

0.85

Vpeak

Measured at pin PAOP1,2/

PAON1,2

Minimum Voltage at PAOP/

Low Current Drive

0.70

Vpeak

Measured at pin PAOP1,2/

PAON1,2

Common mode input

1.6

VCC-

0.5

V

Measured at pin PAIP/PAIN

Peak output sink

current on pin PAOP and

600

1000

mA

This is the sum of the current

from PAOP1 and PAOP2 or

the sum of the currents from

PAON1 and PAON2

Power supply rejection

See Figure 3.

35

V/

µS

Measured across the 100

Ohm line impedance

Output referred noise

78

120

nV/÷

√Hz

measured at f=120kHz

Simulated to be good from

30kHz to 540kHz.

Signal to distortion ratio

Im2 @ 200 kHz

Im3 @ 100 kHz

Two tone B<Superscript>10

Im3 @ 550 kHz

28kHz < f < 121kHz

151kHz < f < 541kHz

78

78

59

78

59

85

66

86

86

59

86

59

dB

dB

dB

dB

dB

Measured at the line

impedance. The 4 to 1

transformer must have total

harmonic distortion better

than 50dB over 30kHz < f <

550kHz.

The multi-tone spec is the

important spec. The two tone

specs exist because the test

equipment may not be able to

create a good enough multi-

tone input signal.