MAX4473ESA datasheet(3/6 Pages) MAXIM

3 / 6 page

Low-Cost, Low-Voltage, PA Power Control

Amplifier for GSM Applications in 8-Pin µMAX

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VCC = +2.7V to +6.5V, SHDN > +2.4V, MAX4473 test circuit, RG1 = RG2 = 1kΩ ±1%, RG3 = 2.5kΩ ±1%, RSENSE = 100Ω ±1%, RL

= 10k

Ω, CL = 300pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +6.0V, VPC = +1.0V, TA = +25°C.)

(Note 1)

Note 1: Limits over temperature are guaranteed by design.

Note 2: No output phase-reversal for input common-mode voltage range from GND to VCC. Common-mode range limited by voltage

drop across Q1 and RG3.

Note 3: Guaranteed by design.

Note 4: Error dependent on tolerance of RG1, RG2, and RG3. Specified with 0.1% tolerance resistors.

VPC = 2.55V, SR1 = SR2 = VCC

GND < VPC < VCC - 0.15V

No sustained oscillations (Note 3)

Measure voltage across RG1, 0.3V < VPC < 2.55V (Note 4)

Bandwidth from VPC to VRG1

CONDITIONS

0.750

SR3 Output Current Limit

µA

±0.04

±1

300

Capacitive Load Stability

PC Input Bias Current

V/V

0.095

0.1

0.105

VPC to VRG1 Ratio

MHz

PC Input Bandwidth

UNITS

MIN

TYP

MAX

PARAMETER

Typical Operating Characteristics

(See

Test Circuit, TA = +25°C, unless otherwise noted.)

0.4

0.6

1.0

0.8

1.2

1.4

2.5

3.5

4.0

3.0

4.5

5.0

5.5

6.0

6.5

SUPPLY CURRENT vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

TA = -40°C

TA = +25°C

TA = +85°C

SHDN = VCC

PC = GND

0.0900

0.0925

0.0950

0.0975

0.1000

0.1025

0.1050

0.1075

0.1100

3456

VRG1 / VPC RATIO vs. VPC RESPONSE

VPC (V)

VCC = 6.0V

-30

100

10k

100k

10M

ERROR-AMPLIFIER RESPONSE

-10

-20

MAX4473 toc03

FREQUENCY

-180

-144

-126

-162

-108

-90

-72

-54

-36

-18

PHASE

GAIN

AVCL = 1000

VCC = 6.5V

VCM = VCC / 2

VPC = 0

100k

ERROR

AMPLIFIER

100

Ω

10k

300pF

OUT

500mV/div

SHDN

2V/div

ENABLE/DISABLE TIME

500ns/div

VCC = 6.5V

VPC = 2V

GND

0.10

0.05

0.20

0.15

0.25

0.30

-40

-15

ERROR-AMPLIFIER

OUTPUT LOW VOLTAGE vs. TEMPERATURE

TEMPERATURE (

°C)

VCC = 6.5V, RL = 10kΩ to VCC / 2

VCC = 2.7V, RL = 10kΩ to VCC / 2

VCC = 6.5V, RL = 500Ω to VCC / 2

VCC = 2.7V, RL = 500Ω to VCC / 2

0.15

0.10

0.05

0.25

0.20

0.35

0.30

0.40

0.45

-40

-15

ERROR-AMPLIFIER

OUTPUT HIGH VOLTAGE vs. TEMPERATURE

TEMPERATURE (

°C)

VCC = 2.7V, RL = 10kΩ to VCC / 2

VCC = 6.5V, RL = 500Ω to VCC / 2

VCC = 6.5V, RL = 10kΩ to VCC / 2

VCC = 2.7V, RL = 500Ω to VCC / 2

From 50% of SHDN edge to VOUT = 1V, VPC = 2V

µs

0.9

1.5

Enable/Disable Time

GAIN CONTROL BUFFER AND V-TO-I CONVERTER

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