RFSA4033PCK-410 datasheet, PDF

RFSA4033

Programmable Temperature Compensating Attenuator

5MHz to 6000MHz

The RFSA4033 is a fully monolithic linear-in-dB analog temperature

compensating attenuator (TCA) featuring exceptional linearity over its entire

gain control range. It is designed to offset the gain reduction of an RF

component over temperature without the need for closed loop feedback.

Eight customer selectable scaled attenuation slopes and eight selectable

nominal attenuation values at 25°C creates a total combination of 64

possible temperature coefficients which make it a flexible solution for RF

lineups. It incorporates revolutionary new circuit architecture to solve a long

standing industry problem with regards to attenuator architecture: high IP3,

low DC current and broad bandwidth. Traditional approaches for solving

this problem require expensive co-fired ceramics with temperature sensitive

materials or current hungry PIN diodes with elaborate area consuming

control circuits. This temperature compensating attenuator requires only a

single supply voltage and 6 logic bits to set the temperature coefficient. The

RFSA4033 is packaged in a small 3mm x 3mm QFN. This attenuator is

matched to 50Ω over its rated control range and frequency with no external

matching components required.

ATTN2

ATTN1

ATTN0

VDD

RFSA4033

Package: QFN, 16-pin,

3.0mm x 3.0mm x 0.85mm

Features

■

Patent Pending Circuit Architecture

Broadband 5MHz to 6000MHz

Frequency Range

64 Selectable Attenuation versus

Temperature Linear-in-dB Slopes

+52dBm Input IP3 Typical

+80dBm Input IP2 Typical

High 1dB Compression Point

>+30dBm

Low Residual Phase Noise

<-140dBc/Hz

at 10kHz offset

3V to 5V Power Supply

3V Logic Compatible

Class 2 ESD (2000V HBM)

16

15

14

13

Applications

12

GND

RFOUT

GND

RFIN

GND

1

2

3

ATTENUATOR

4

CONTROL

SYSTEM

■

Cellular, 3G, LTE Infrastructure

WiBro, LTE

Microwave Radio

High Linearity RF Power Control

Cable Modems

CATV

Test Equipment

11

10

9

5

SLP2

6

SLP1

7

SLP0

8

GND

Functional Block Diagram

Ordering Information

RFSA4033SQ

RFSA4033SR

RFSA4033TR7

RFSA4033PCK-410

Sample bag with 25 pieces

7" Reel with 100 pieces

7" Reel with 2500 pieces

5MHz to 6GHz PCBA with 5-piece sample bag

DS150225

RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421

For sales or technical support, contact RFMD at +1.336.678.5570 or

customerservice@rfmd.com.

RF MICRO DEVICES

®

and RFMD

®

are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names,

1 of 17

RFSA4033

Absolute Maximum Ratings

Parameter

Supply Voltage (V

DD

)

Logic Control Voltage

Maximum CW Input Power

Storage Temperature Range

ESD Rating - Human Body Model (HBM)

Moisture Sensitivity Level

Rating

-0.5 to 6.0

-0.5 to V

DD

30

-65 to +150

2000

MSL2

Unit

V

dBm

°C

V

Caution!

ESD sensitive device.

RFMD Green: RoHS status based on EU

Directive 2011/65/EU (at time of this

document revision), halogen free per IEC

61249-2-21, < 1000ppm each of antimony

trioxide in polymeric materials and red

phosphorus as a flame retardant, and

<2% antimony in solder.

Exceeding any one or a combination of the Absolute

Maximum Rating conditions may cause permanent

damage to the device. Extended application of Absolute

Maximum Rating conditions to the device may reduce

device reliability. Specified typical performance or

functional operation of the device under Absolute

Maximum Rating conditions is not implied.

Recommended Operating Condition

Parameter

Min

Operating Temperature Range

Operating Junction Temperature

Supply Voltage (V

DD

)

3.0

-40

Specification

Typ

Max

+105

+125

5.5

Unit

°C

V

Nominal Operating Parameters

Specification

Parameter

Min

Supply and Interface

Requirements

Supply Current (I

DD

)

Attenuation Bits (ATTN)

Slope Bits (SLP)

Control Pins Logic Low

Control Pins Logic High

Thermal Resistance

RF Input Power

2.0

45

27

7

3

0.8

V

°C/W

dBm

10

mA

8 Nominal insertion loss states at 25°C

8 (Insertion loss versus temperature) slope states

Unit

Typ

Max

Condition

General Performance

Frequency Range

Nominal Attenuation

Nominal Attenuation Accuracy

(See Table Below)

Temperature Coefficient

3

5

3

See Table

10

6000

10

MHz

dB

mdB/°C

Typical Performance: V

DD

= 5V, Temp = 25°C, RF

Frequency = 2000MHz

At +25°C, selectable in 1dB steps

At +25°C

Selectable in 1mdB/°C increments

RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421

For sales or technical support, contact RFMD at +1.336.678.5570 or

customerservice@rfmd.com.

DS150225

RF MICRO DEVICES

®

and RFMD

®

are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names,

2 of 17

RFSA4033

Specification

Parameter

Min

General Performance -

Continued

Temperature Coefficient Accuracy

Nominal Impedance

Input Return Loss

Output Return Loss

Input P1dB

Input IP2

Input IP3

Input IH2

Input IH3

45

±1

50

18

30

80

52

86

58

mdB/°C

Ω

dB

dBm

2F input intercept point, Pin + (P

OUT

– F2)

3F input intercept point, Pin + (P

OUT

– F3) /2

F1 + F2 input intercept point, Pin + (P

OUT

– IM2)

Unit

Typ

Max

Condition

Typical Performance: V

DD

= 5V, Temp = 25°C, RF

Frequency = 2000MHz

Per dB of nominal attenuation

Nominal Attenuation Accuracy Table

Nominal Attenuation Accuracy

3

4

5

6

7

8

9

10

Typical

2.7

3.6

4.6

5.7

6.8

7.9

9.0

10.1

Unit

dB

RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421

For sales or technical support, contact RFMD at +1.336.678.5570 or

customerservice@rfmd.com.

DS150225

The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of

third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended

application circuitry and specifications at any time without prior notice.

3 of 17

RFSA4033

Typical Application Schematic

RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421

For sales or technical support, contact RFMD at +1.336.678.5570 or

customerservice@rfmd.com.

DS150225

The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of

third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended

application circuitry and specifications at any time without prior notice.

4 of 17

RFSA4033

Typical Performance: T = 25°C, V

DD

= 5V unless otherwise noted

RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421

For sales or technical support, contact RFMD at +1.336.678.5570 or

customerservice@rfmd.com.

DS150225

The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of

third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended

application circuitry and specifications at any time without prior notice.

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RFSA4033PCK-410

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