MC33169 Просмотр технического описания (PDF) - Motorola => Freescale

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MC33169

GaAs Power Amplifier Support IC

Motorola => Freescale 

MC33169

PIN FUNCTION DESCRIPTION

Pin

Name

Description

1

C2 Input

This is the positive pin for the charge pump capacitor in the voltage doubler.

2

C1/C2

This is the negative pin for the charge pump capacitors.

3

C1 Input

This is the positive pin for the charge pump capacitor in the voltage tripler.

4

VO Output

It delivers a regulated negative voltage of –4.0 V or –2.5 V depending on the product version. It can

source an output current in excess of 5.0 mA.

5

VO Charge Pump This is the positive pin for the capacitor in the inverting charge pump.

Capacitor +

6

Gnd

This pin is Ground for both signal and power circuitry.

7

VO Charge Pump This is the negative pin for the capacitor in the inverting charge pump.

Capacitor –

8

Gate Drive Output This is the output of the gate amplifier which directly drives the gate of an N–Channel MOSFET. It can

sink and source peak currents up to 3.0 mA.

9

Tx Power Control The input signal applied on this pin controls the N–Channel switching MOSFET in follower mode and

Input

therefore, linearly controls the RF output voltage.

10

Sense Input Pin

It senses the negative voltage directly on the Power Amplifier. It is also the input pin of an internal

Undervoltage Lockout circuit which blocks the switching of the N–Channel MOSFET if the sensed

voltage is more positive than –3.0 V (–4.0 V version) or –2.0 V (–2.5 V version).

11

VBB Triple

This is the positive pin of the output filter capacitor in the voltage tripler. The triple voltage at that pin is

used internally to supply the inverting charge pump and the gate amplifier.

12

VBB Double

This is the positive pin of the output filter capacitor in the voltage doubler.

13

Idle Mode Input

This pin is used to set the circuit in Low Power Consumption Standby mode. It is CMOS compatible, i.e.

a voltage lower than 0.5 V applied on this pin makes the device go into Standby mode in which the

current consumption is lower than 1.0 µA. The MC33169 is then awakened by a voltage higher than

2.0 V applied on that pin.

14

VCC

This is the supply input pin for the MC33169, VCC voltage ranges from 2.7 V to 7.2 V.

VBB Double

12

Cd

Figure 1. MC33169 Representative Block Diagram

C2 C1

123

Positive

Charge Pump

VCC

14

Priority

Management

VBB Triple

11

Ct

Positive

Regulator

Standby

Circuit

Idle Mode

13 Input

+ VBattery

Oscillator

Voltage

Reference

Negative Regulator

(–4.0 or –2.5 V)

UVLO

Negative

Charge Pump

6 Gnd 7

5

VO 4 10 Vsense

Gate

Amplifier

VGout

8

RF In

9

Tx(on)

VDD

RF Out

GaAs

PA

Cp

Cn

MOTOROLA ANALOG IC DEVICE DATA

5

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