Maxim MAX2633EUK-T, MAX2631EUK-T, MAX2630EUS-T Datasheet

_______________General Description

The MAX2630/MAX2631/MAX2632/MAX2633 are low­voltage, low-noise amplifiers for use from VHF to
microwave frequencies. Operating from a single +2.7V
to +5.5V supply, these devices have a flat gain
response to 900MHz. Their low noise figure and low
supply current make them ideal for receive, buffer, and
transmit IF applications.

The MAX2630/MAX2631 are biased internally, eliminat­ing the need for external bias resistors or inductors. The
MAX2632/MAX2633 have a user-selectable supply cur­rent, which can be adjusted by adding a single external
resistor. This allows customized output power and gain
according to specific applications requirements. The
MAX2631/MAX2633 feature a shutdown pin that allows
them to be powered down to less than 1µA supply cur­rent. Aside from a single bias resistor required for the
MAX2632/MAX2633, the only external components
needed for this family of amplifiers are input and output
blocking capacitors and a VCCbypass capacitor.

The MAX2630 comes in a 4-pin SOT143 package, re­quiring minimal board space. The MAX2631/MAX2632
come in small 5-pin SOT23 packages. The MAX2633
comes in a 6-pin SOT23 package.

________________________Applications

Personal Communicating Systems Cordless Phones
Global Positioning Systems Cellular Phones
Wireless Local Area Networks ISM Radios
Wireless Local Loops TV Tuners
Land Mobile Radios Set-Top Boxes

____________________________Features

♦ Single +2.7V to +5.5V Operation
♦ Internally Biased (MAX2630/MAX2631)
♦ Adjustable Bias (MAX2632/MAX2633)
♦ 6.6mA Supply Current (insensitive to supply

voltage)

♦ 1µA Shutdown Current (MAX2631/MAX2633)
♦ 3.7dB Noise Figure
♦ 13.4dB Gain
♦ Ultra-Small SOT Packages

MAX2630–MAX2633

VHF-to-Microwave, +3V,

General-Purpose Amplifiers

________________________________________________________________

Maxim Integrated Products

1

OUT

V

CC

GND

3

4

21IN

SOT143

TOP VIEW

DG__

MAX2630

GND

V

CC

OUT

1

5

IN

BIAS

MAX2632

SOT23-5

2

3

4

GND

BIAS

V

CC

OUT

1

6

5

IN

SHDN

MAX2633

SOT23-6

2

3

4

GND

V

CC

OUT

1

5

IN

SHDN

MAX2631

SOT23-5

2

3

4

AAAA

AABL

AABK

_________________Pin Configurations

R

BIAS

OFF

ON

SHDN

GND

OUT

IN

BIAS

V

CC

C

BYP

C

BLOCK

V

CC

C

BLOCK

IN

OUT

BIAS

MAX2633

__________Typical Operating Circuit

PART

MAX2630EUS-T
MAX2631EUK-T
MAX2632EUK-T

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

4 SOT143

5 SOT23-5
5 SOT23-5

______________Ordering Information

MAX2633EUT-T

-40°C to +85°C 6 SOT23-6

19-1181; Rev 1; 7/97

SOT TOP

MARK*

DG__
AABK
AABL
AAAA

*

The first two letters in the SOT top mark identify the part,
while the remaining two letters are the lot-tracking code.

For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone].
For small orders, phone [phone] ext. 3468.

MAX2630–MAX2633

VHF-to-Microwave, +3V,
General-Purpose Amplifiers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +3V, Z0= 50Ω, fIN= 900MHz, R

BIAS

= 10kΩ (MAX2632/MAX2633), V

SHDN

= VCC(MAX2631/MAX2633), TA= +25°C, unless

otherwise noted.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: Guaranteed by design and characterization.

V

CC

to GND ................................................................-0.3V to 6V

Input Power.........................................................................5dBm

OUT Current .....................................................................±12mA

IN to GND Voltage...................................................-1.2V to 1.2V

Bias to GND Voltage....................................................0.0V to 3V

Voltage at SHDN Input

(MAX2631/MAX2633)............................-0.3V to (V

CC

+ 0.3V)

Current into SHDN Input (MAX2631/MAX2633).................100µA

Continuous Power Dissipation (T

A

= +70°C)

SOT143 (derate 4mW/°C above +70°C).....................320mW

SOT23-5 (derate 7.1mW/°C above +70°C).................571mW

SOT23-6 (derate 7.1mW/°C above +70°C).................571mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range.............................-65°C to +150°C

Lead Temperature (soldering, 10sec).............................+300°C

PARAMETERS

MIN TYP MAX UNITS

Output Voltage Standing-Wave Ratio 1.25:1

Input Voltage Standing-Wave Ratio 1.3:1

Output IP3 -1 dBm

Output 1dB Compression Point -11 dBm

1.3 1.5

5.5 6.5 8.0

Operating Temperature Range -40 85 degrees

Power Gain

11 13.4 16.5

dB

Noise Figure 3.8 dB

Shutdown Supply Current <0.1 1 µA
SHDN Input Low Voltage

0.45 V

SHDN Input High Voltage

2.0 V

SHDN Input Bias Current

30

1

µA

CONDITIONS

fIN= 800MHz to 1000MHz

fIN= 800MHz to 1000MHz

R

BIAS

=10kΩ

(Note 1)

TA= +25°C

MAX2631/MAX2633
MAX2631/MAX2633, VCC= 2.7V to 5.5V
MAX2631/MAX2633, VCC= 2.7V to 5.5V

MAX2631/
MAX2633

V

SHDN

= V

CC

V

SHDN

= GND

Supply Voltage 2.7 5.5 V

9.4 18.4TA= T

MIN

to T

MAX

(Note 1)

4.2 6.5 9.2

5.2 6.5 11.0

mASupply Current

15 17R

BIAS

= 500Ω

R

BIAS

= 40kΩ

VCC= 3V, TA= +25°C

VCC= 2.7V to 5.5V, TA= +25°C

VCC= 3V, TA= T

MIN

to T

MAX

(Note1)

MAX2630–MAX2633

VHF-to-Microwave, +3V,

General-Purpose Amplifiers

_______________________________________________________________________________________

3

__________________________________________Typical Operating Characteristics

(VCC= +3V, V

SHDN

= VCC(MAX2631/MAX2633), Z0= 50Ω, fIN= 900MHz, R

BIAS

= 10kΩ (MAX2632/MAX2633), TA= +25°C, unless

otherwise noted.)

10

8

6

4

2

0

2 3 4 5 6

SUPPLY CURRENT vs. SUPPLY VOLTAGE

MAX2630-1

VCC (V)

I

CC

(mA)

TA = +85°C

TA = -40°C

TA = +25°C

25

20

15

10

5

0

0 5.02.5 10.0 15.0

MAX2632/MAX2633

GAIN vs. SUPPLY CURRENT

MAX2630-2

ICC (mA)

GAIN (dB)

7.5 12.5

f = 0.1GHz

f = 0.9GHz

f = 1.5GHz

20

16

12

8

4

0

0.1 0.3 0.7 1.1 1.3 1.5

GAIN vs. FREQUENCY AND VOLTAGE

MAX2632-3

FREQUENCY (GHz)

GAIN (dB)

0.5 0.9

VCC = 5V

VCC = 3V

-5.0

-7.5

-10.0

-12.5

-15.0

0.1 0.3 0.7 1.1 1.3 1.5

OUTPUT 1dB COMPRESSION

POWER vs. FREQUENCY AND TEMPERATURE

MAX2630-6

FREQUENCY (GHz)

P

-1

(dBm)

0.5 0.9

TA = -40°C

T

A

= +85°C

20

16

12

8

4

0

0.1 0.3 0.7 1.1 1.3 1.5

GAIN vs. FREQUENCY

AND TEMPERATURE

MAX2630-4

FREQUENCY (GHz)

GAIN (dB)

0.5 0.9

TA = -40°C

TA = +85°C

TA = +25°C

-5.0

-7.5

-10.0

-12.5

-15.0

0.1 0.3 0.7 1.1 1.3 1.5

OUTPUT 1dB COMPRESSION

POWER vs. FREQUENCY AND VOLTAGE

MAX2630-5

FREQUENCY (GHz)

P

-1

(dBm)

0.5 0.9

V

CC

= 5V

V

CC

= 3V

0

-4

-8

-12

-16

-20
0 2.5 7.5 12.5 15.0

MAX2632/MAX2633

OUTPUT 1dB COMPRESSION

POWER vs. SUPPLY CURRENT

MAX2630-7

ICC (mA)

P

-1

(dBm)

5.0 10.0

f = 0.1GHz

f = 0.9GHz

f = 1.5GHz

5

4

3

2

1

0

0.1 0.3 0.5 0.9 1.1 1.5

NOISE FIGURE vs. FREQUENCY

MAX2630-8

FREQUENCY (GHz)

NOISE FIGURE (dB)

0.7 1.3

MAX2630–MAX2633

VHF-to-Microwave, +3V,
General-Purpose Amplifiers

4 _______________________________________________________________________________________

______________________________________________________________Pin Description

MAX2630

1

2

3

5

4

—

2

—

IN

GND

3 OUT

V

CC

4

SHDN

6

2

3

4

1

MAX2633

PIN

—

NAME

BIAS51

Amplifier Input. Use a series blocking capacitor with less than
3Ω reactance at your lowest operating frequency.

Ground Connection. For optimum performance, provide a low­inductance connection to the ground plane.

Amplifier Output. Use a series blocking capacitor with less than
3Ω reactance at your lowest operating frequency.

Supply Connection. Bypass directly at the supply pin. The value
of the bypass capacitor is determined by the lowest operating
frequency, and is typically the same as the blocking capacitor
value. Additional bypassing may be necessary for long V

CC

lines.
Shutdown Input. Driving SHDN with a logic low turns off the

amplifier.

FUNCTION

Bias Resistor Connection. Connect a resistor to GND to set the
bias current. See the Supply Current vs. R

BIAS

graph in the

Typical Operating Characteristics

.

—

MAX2632MAX2631

5

2

3

4

1

15

12

9

6

3

0

1 10 100

MAX2632/MAX2633

SUPPLY CURRENT vs. R

BIAS

MAX2630-9

R

BIAS

(kΩ)

I

CC

(mA)

VCC = 5V

VCC = 3V

VCC = 4V

0

0.01

0.03

0.02

0.04

0.05

-40 0-20 20 40 60 80

MAX2631/MAX2633

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

MAX2630 toc11

TEMPERATURE (°C)

SHUTDOWN I

CC

(µA)

VCC = 5.5V

V

CC

= 2.7V

VCC = 3.0V

5:1

4:1

3:1

2:1

1:1

0.1 0.3 0.7 1.1 1.3 1.5

VOLTAGE STANDING-WAVE

RATIO vs. FREQUENCY

MAX2630-10

FREQUENCY (GHz)

VSWR

0.5 0.9

OUT

IN

____________________________Typical Operating Characteristics (continued)

(VCC= +3V, V

SHDN

= VCC(MAX2631/MAX2633), Z0= 50Ω, fIN= 900MHz, R

BIAS

= 10kΩ (MAX2632/MAX2633), TA= +25°C, unless

otherwise noted.)

MAX2630–MAX2633

VHF-to-Microwave, +3V,

General-Purpose Amplifiers

_______________________________________________________________________________________ 5

Table 1a. Typical Scattering Parameters

(VCC= +3V, V

SHDN

= VCC, Z0= 50Ω, R

BIAS

= 10kΩ, TA= +25°C.)

4.30-190.62370.0120.05 -38.7464.3912.9-500.59

3.86-1060.271140.089-21.0121.292.2-1200.222.50

3.81-970.251160.086-21.351.362.6-1150.242.40

3.80-830.241160.077-22.3271.513.6-980.272.20

3.80-630.251170.069-23.3861.634.3-660.312.00

3.76-340.261200.065-23.71441.734.8-260.301.80

3.51-70.261220.066-23.6-1621.915.6-310.241.60

2.90-120.261130.065-23.7-1102.487.9-600.111.40

K

4.07

3.93

3.74

3.61

3.45

3.38

3.27

3.16

3.05

2.87

2.59

S22

(ang)

-29

-49

-71

-94

-118

-109

-96

-82

-68

-53

-25

S22

(mag)

0.57

0.54

0.53

0.51

0.50

0.48

FREQUENCY

(GHz)

0.46

0.44

0.42

0.60

0.40

0.33

S12

(ang)

12

-13

-32

0.50

-51

-70

0.40

-89

-107

-124

0.70

-142

-161
153

0.80

S12

(mag)

0.015

0.016

0.90

0.018

0.019

0.021

1.00

0.022

0.025

0.027

0.10

0.031

0.035

0.20

0.051

S12

(dB)

-36.7

0.30

-35.8

-35.0

-34.4

1.20

-33.6

-33.0

-32.2

-31.3

-30.3

-29.0

-25.8

S21

(ang)

1

-49

-89

-125

-138

-127

-116

-104

-93

-82

-58

S21

(mag)

5.11

5.32

5.32

5.28

5.19

5.05

4.93

4.75

4.49

4.25

3.48

S21

(dB)

14.2

14.5

14.5

14.5

14.3

14.1

13.9

13.5

13.0

12.6

10.8

S11

(ang)

-70

-86

-100

-109

-99

-86

-68

-49

-31

-10
19

S11

(mag)

0.37

0.22

0.17

0.16

0.15

0.14

0.14

0.14

0.13

0.13

0.06

MAX2630–MAX2633

VHF-to-Microwave, +3V,
General-Purpose Amplifiers

6 _______________________________________________________________________________________

0.08

0.12

0.12

0.11

0.11

0.11

0.11

0.12

0.14

0.20

0.58

S11

(mag)

-54

21

-2

-22

-45

-66

-82

-94

-101

-97

-53

S11

(ang)

12.5

14.1

14.5

14.9

15.1

15.2

15.4

15.4

15.4

15.4

13.6

S21

(dB)

4.22

5.09

5.30

5.54

5.68

5.78

5.87

5.91

5.91

5.87

4.80

S21

(mag)

-59

-85

-96

-108

-119

-130

-141

-123

-87

-48

45

S21

(ang)

-25.2

-28.5

-30.0

-31.3

-32.3

-33.1

-33.8

1.20

-34.7

-35.2

-36.1

0.30

-39.2

S12

(dB)

0.055

0.20

0.038

0.032

0.05

0.027

0.024

0.022

1.00

0.020

0.018

0.017

0.90

0.016

0.011

S12

(mag)

0.80

153

-158

-139

0.70

-121

-104

-86

0.40

-68

-50

0.50

-31

-14

36

S12

(ang)

0.34

0.42

0.60

0.43

0.45

0.48

FREQUENCY

(GHz)

0.49

0.51

0.52

0.53

0.55

0.62

S22

(mag)

-18

-49

-65

-79

-94

-108

-119

-95

-72

-49

-22

S22

(ang)

2.01

2.28

2.51

2.73

2.87

3.02

3.14

3.35

3.48

3.75

4.26

K

1.40 0.10 -103 9.3 2.93 -112 -23.1 0.070 114 0.24 -4 2.36

1.60 0.22 -44 6.7 2.16 -163 -23.3 0.068 125 0.24 -7 3.07

1.80 0.29 -20 5.8 1.96 145 -23.7 0.065 124 0.24 -37 3.41

2.00 0.30 -60 5.3 1.85 89 -23.3 0.069 120 0.23 -65 3.41

2.20 0.26 -92 4.9 1.75 29 -22.2 0.078 117 0.21 -83 3.31

2.40 0.24 -110 3.9 1.57 2 -21.7 0.082 116 0.23 -95 3.48

2.50 0.23 -113 3.5 1.50 10 -20.9 0.090 115 0.25 -100 3.35

Table 1b. MAX2633 Typical Scattering Parameters

(VCC= +5V, V

SHDN

= VCC, Z0= 50Ω, R

BIAS

= 10k, TA= +25°C.)

0.35 -76 15.0 5.62 1 -36.90.10 0.014 13 0.57 -29 3.83

MAX2630–MAX2633

VHF-to-Microwave, +3V,

General-Purpose Amplifiers

_______________________________________________________________________________________ 7

_______________Detailed Description

The MAX2630–MAX2633 are broadband amplifiers with
3dB bandwidth greater than 1GHz. Their small size and
internal bias circuitry make them ideal for applications
where board space is limited. The MAX2632/MAX2633
have a user-selectable bias current that allows the user
to set both gain and output power for a particular appli­cation, and the MAX2631/MAX2633 incorporate shut­down capability.

__________Applications Information

External Components

The MAX2630–MAX2633 are easy to use, as shown in the

Typical Operating Circuit

and Figures 1, 2 and 3. Input
and output series capacitors may be necessary to block
DC bias voltages generated by the amplifiers from inter­acting with adjacent circuitry. These capacitors must be
large enough to contribute negligible reactance in a 50Ω
system at the minimum operating frequency. Use the fol­lowing equation to calculate their minimum value:

where f (in megahertz) is the minimum operating
frequency.

The VCCpin must be RF bypassed for correct opera­tion. To accomplish this, connect a capacitor between
the VCCpin and ground, as close to the package as is
practical. Use the same equation given above (for DC­blocking capacitor values) to calculate the minimum
capacitor value. If the PC board has long VCClines,
additional bypassing may be necessary. This can be
done farther away from the package, if needed.

Proper grounding of the GND pin is essential. If the PC
board uses a topside RF ground, connect it directly to
the GND pin. For a board where the ground plane is not
on the component side, the best technique is to con­nect the GND pin to it with a plated through-hole close
to the package.

An on-chip buffer at the MAX2631/MAX2633’s SHDN
pin makes bypassing this pin unnecessary except in
very noisy applications. When RF filtering is needed,
use a bypass capacitor similar to the one used on VCC.
Since negligible current flows into this pin, additional
RF filtering may be done with a series resistor.

To set the MAX2632/MAX2633’s supply current,
connect a resistor from the BIAS pin to ground. To
estimate the value of this resistor, refer to the graph
Supply Current vs. R

BIAS

in the

Typical Operating

Characteristics

.

C

BLOCK

=

53,000

f

(pF)

R

BIAS

BIAS

GND

OUT

IN

V

CC

C

BYP

C

BLOCK

V

CC

C

BLOCK

IN

OUT

BIAS

MAX2632

Figure 3. MAX2632 Typical Operating Circuit

OUT

OUT

V

CC

IN

GND

C

BYP

V

CC

C

BLOCK

C

BLOCK

IN

MAX2630

OFF

ON

SHDN

GND

OUT

IN

V

CC

C

BYP

C

BLOCK

V

CC

C

BLOCK

IN

OUT

BIAS

MAX2631

Figure 1. MAX2630 Typical Operating Circuit

Figure 2. MAX2631 Typical Operating Circuit

MAX2630–MAX2633

VHF-to-Microwave, +3V,
General-Purpose Amplifiers

8 _______________________________________________________________________________________

Figure 4. MAX2630 Example PC Board Layout

Figure 5. MAX2631 Example PC Board Layout

Figure 7. MAX2633 Example PC Board LayoutFigure 6. MAX2632 Example PC Board Layout

PC Board Layout Example

Example PC board layouts are given in Figures 4 to 7.
They use FR-4 with a 31mil layer thickness between the
RF lines and the ground plane. The boards satisfy all of
the above recommendations.

MAX2630–MAX2633

VHF-to-Microwave, +3V,

General-Purpose Amplifiers

_______________________________________________________________________________________ 9

P

D

E

F

W

P

2

P

0

D

1

A

0

B

0

K

0

t

W
P
E

F

D

D

1

P

0

P010
P

2

A0
B0

K0
t

8.001

3.988

1.753

3.505

1.499

0.991

3.988

40.005

2.007

3.200

3.099

1.397

0.254

+0.305

-0.102

+0.102
+0.000

+0.254
+0.000

±0.102

±0.102
±0.203

±0.102
±0.051

±0.051
±0.102
±0.102
±0.102

±0.127

NOTE: DIMENSIONS ARE IN MM.
AND FOLLOW EIA481-1 STANDARD.

__________________________________________________Tape-and-Reel Information

___________________Chip Information

TRANSISTOR COUNT: 199

MAX2630–MAX2633

VHF-to-Microwave, +3V,
General-Purpose Amplifiers

10 ______________________________________________________________________________________

________________________________________________________Package Information

SOT1434.EPS

MAX2630–MAX2633

VHF-to-Microwave, +3V,

General-Purpose Amplifiers

______________________________________________________________________________________ 11

___________________________________________Package Information (continued)

SOT5L.EPS

MAX2630–MAX2633

VHF-to-Microwave, +3V,
General-Purpose Amplifiers

6LSOT.EPS

___________________________________________Package Information (continued)

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

12

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