MC13109A

8

MOTOROLA RF/IF DEVICE DATA

Speaker Amplifier/SP Mute

The Speaker Amplifier is an inverting rail–to–rail

operational amplifier. The non–inverting input terminal is

connected to the internal VB half supply reference. External

resistors and capacitors are used to set the gain and

frequency response. The “SA In” input is ac coupled.

(Test Conditions: VCC = 2.6 V, TA = 25°C, fin = 1.0 kHz, External Resistors Set for Gain of 1.)

Characteristic

Condition

Input

Pin

Measure

Pin

Symbol

Min

Typ

Max

Unit

Maximum Output Swing

VCC = 2.3 V,

RL = 130 Ω

SA In

SA Out

VOmax

–

0.8

–

Vpp

L

VCC = 2.3 V,

RL = 600 Ω

V3 4 V

–

2.0

30

–

VCC = 3.4 V,

RL = 600 Ω

–

3.0

–

SP Mute

Vin = –20 dBV

RL = 130 Ω

No popping detectable

during SP Mute

transitions

SA In

SA Out

Msp

–

–67

–

dB

Mic Amplifier

The Mic Amplifier is an inverting rail–to–rail output

operational amplifier with the non–inverting input terminal

connected to the internal VB half supply reference. External

resistors and capacitors are connected to set the gain and

frequency response. The “Tx In” input is ac coupled.

(Test Conditions: VCC = 2.6 V, TA = 25°C, fin = 1.0 kHz, External Resistors Set for Gain of 1.)

Characteristic

Condition

Input

Pin

Measure

Pin

Symbol

Min

Typ

Max

Unit

Open Loop Gain

–

Tx In

Amp Out

AVOL

–

60

–

dB

Gain Bandwidth

–

Tx In

Amp Out

GBW

–

100

–

kHz

Maximum Output Swing

RL = 10 kΩ

Tx In

Amp Out

VOmax

–

VCC – 0.3

–

Vpp