RFSA2624SR datasheet, PDF - EEWORLD Datasheet

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RFSA2624SR: DescriptionVariable Attenuator, 50MHz Min, 4000MHz Max, 2.8dB Insertion Loss-Max, 4.20 X 4.20 MM, MCM, QFN-24; CategoryWireless rf/communication Radio frequency and microwave; File Size915KB，9 Pages; ManufacturerQorvo; Websitehttps://www.qorvo.com; Environmental Compliance

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RFSA2624SR Overview

Variable Attenuator, 50MHz Min, 4000MHz Max, 2.8dB Insertion Loss-Max, 4.20 X 4.20 MM, MCM, QFN-24

RFSA2624SR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Qorvo
package instruction	LCC24,.16SQ,20
Reach Compliance Code	compliant
ECCN code	5A991.G
Nominal attenuation	31.5 dB
structure	COMPONENT
Maximum input power (CW)	26.99 dBm
Maximum insertion loss	2.8 dB
Installation features	SURFACE MOUNT
Number of terminals	24
Maximum operating frequency	4000 MHz
Minimum operating frequency	50 MHz
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
Encapsulate equivalent code	LCC24,.16SQ,20
power supply	5 V
RF/Microwave Device Types	VARIABLE ATTENUATOR
surface mount	YES

RFSA2624SR Preview

RFSA2624

Serial Con-

trolled Digital

Step Attenua-

toR 50MHz to

4000MHz, 6-

Bit, 0.5dB LSB

RFSA2624

SERIAL CONTROLLED DIGITAL STEP

ATTENUATOR 50MHz to 4000MHz, 6-BIT, 0.5dB

Package: MCM, 24-Pin, 4.2mm x 4.2mm

Features



Frequency Range 50MHz to

4000MHz

6-Bits, 31.5dB Range, 0.5dB

Step

High Linearity, OIP3 >48dBm

through over 700MHz to

2700MHz

3V and 5V Logic Compatible

Serial-to-Parallel Controller

Serial Programming Interface

Power-up Programming Modes

On-chip ESD Protection >500V

HBM

Single Supply, 3V to 5V Operation

Footprint compatible with most

24-pin, 4mm QFNs

Functional Block Diagram



Product Description

RFMD’s RFSA2624 is a 6-bit digital step attenuator (DSA) that features high linear-

ity over the entire 31.5dB gain control range with excellent step accuracy in 0.5dB

steps. The RFSA2624 is programmed via a serial mode control interface that is

both 3V and 5V compatible. The RFSA2624 also offers a rugged Class 1B HBM ESD

rating via on-chip ESD circuitry. The MCM package is footprint compatible with most

24-pin, 4mm, QFN packages.



Applications



Transceiver IF Applications

Cellular, PCS, GSM, UMTS, LTE,

WiMax/WiFi

Wireless Data, Satellite

Terminals

Test Equipment



Ordering Information

RFSA2624SR

RFSA2624SQ

RFSA2624TR7

RFSA2624TR13

RFSA2624PCK-410

7” Reel with 100 pieces

Sample bag with 25 pieces

7” Reel with 750 pieces

13” Reel with 2500 pieces

50MHz to 4000MHz PCBA with 5-piece sample bag

Optimum Technology Matching

®

Applied

GaAs HBT

GaAs MESFET

InGaP HBT

SiGe BiCMOS

Si BiCMOS

SiGe HBT



GaAs pHEMT



Si CMOS

Si BJT

GaN HEMT

BiFET HBT

RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-

mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2012, RF Micro Devices, Inc.

DS110706

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.

1 of 9

RFSA2624

Absolute Maximum Ratings

Parameter

Supply Voltage

DC Supply Current

Power Dissipation

Max RF Input Power

Operating Temperature (T

CASE

)

Storage Temperature

Junction Temperature

ESD Rating (HBM)

Moisture Sensitivity Level

Rating

+5.5

15

83

27

-40 to +85

-40 to +150

150

Class 1B

MSL3

Unit

V

mA

mW

dBm

°C

Caution! ESD sensitive device.

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 perfor-

mance or functional operation of the device under Absolute Maximum Rating condi-

tions is not implied.

The information in this publication is believed to be accurate and reliable. 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 appli-

cation circuitry and specifications at any time without prior notice.

RFMD Green: RoHS compliant per EU Directive 2002/95/EC, 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.

Parameter

Frequency Range

Insertion Loss

Min.

50

Specification

Typ.

1.5

1.7

2.3

2.5

Max.

4000

1.9

2.8

Unit

MHz

dB

dBm

dB

bit

nS

Condition

150MHz, 0dB attenuation

850MHz, 0dB attenuation

2700MHz, 0dB attenuation

3800MHz, 0dB attenuation

0.5dB step size

700MHz to 2700MHz, all states

Serial Interface

t

RISE

, t

FALL

(10%/90% RF)

t

ON

, t

OFF

(50% CTL to 10%/90% RF)

Gain Control Range

Step Accuracy

Input IP3 (0 - 15.5dB states)

Input P1dB

Return Loss

Control Interface

Settling Time

Switching Speed

Supply Voltage (V

DD

)

Supply Current

Control Voltage (V

CTL

)

0

2.0

4.75

31.5

±(0.15 + 5.0% attenuation setting)

48

27

13

6

250

5.0

5

0.8

V

DD

5.25

V

mA

V

Low

High

Notes:

1. V

DD

= 5V, V

CTL

= 3V, T = 25°C

2. Broadband Application Circuit (with ACG capacitors)

3. IIP3 measured with P

IN

= +10dBm/tone, 1MHz spacing

2 of 9

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.

DS110706

RFSA2624

Typical Performance - Broadband Application Circuit (25°C)

Insertion Loss (De-embedded)

0.0

-0.5

Insection Loss (dB)

-1.0

-1.5

-2.0

-2.5

-3.0

-3.5

-4.0

0.0

0.5

1.0

1.5

2.0

2.5

Frequency (GHz)

3.0

3.5

4.0

25C

-40C

85C

Normalized Attenuation, MajorStates

0

-5

-10

Attenuation (dB)

-15

-20

-25

-30

-35

-40

0.0

0.5

1.0

1.5

2.0

2.5

Frequency (GHz)

3.0

3.5

4.0

0.5

2

8

31.5

1

4

16

Return Loss of RF1, MajorStates

0

-5

Return Loss (dB)

-10

-15

-20

-25

-30

-35

-40

0

0.5

1

1.5

2

2.5

Frequency (GHz)

3

3.5

4

0

1

4

16

0.5

2

8

31.5

Return Loss of RF2, MajorStates

0

-5

Return Loss (dB)

-10

-15

-20

-25

-30

-35

-40

0

0.5

1

1.5

2

2.5

Frequency (GHz)

3

3.5

4

0

1

4

16

0.5

2

8

31.5

Step Error, MajorStates

0.8

0.6

0.8

0.6

Step Error vs. Attenuation State

Step Error (dB)

0.2

0.0

-0.2

-0.4

-0.6

-0.8

0

0.5

1

1.5

2

2.5

Frequency (GHz)

3

3.5

4

0.5

2

8

31.5

1

4

16

Step Error(dB)

0.4

0.2

0.0

-0.2

-0.4

-0.6

-0.8

0

4

8

12

16

20

24

28

32

50MHz

1GHz

3GHz

500MHz

2GHz

4GHz

Attenuation (dB)

DS110706

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.

3 of 9

RFSA2624

Typical Performance - Broadband Application Circuit (25°C)

(Continued)

Relative Phase, MajorStates

60

50

Relative Phase (deg)

40

30

20

10

0

-10

-20

0

0.5

1

1.5

2

2.5

Frequency (GHz)

3

3.5

4

0.5

2

8

31.5

1

4

16

0.8

0.6

0.4

Worst Case Successive Step Error

Error(dB)

0.2

0.0

-0.2

-0.4

-0.6

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Frequency(GHz)

4 of 9

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.

DS110706

RFSA2624

Truth Table

Control Bit

C16

1

0

C8

1

0

1

0

C4

1

0

1

0

C2

1

0

1

0

C1

1

0

1

0

C0.5

1

0

1

0

Relative Gain

Setting

Max gain

-0.5dB

-1dB

-2dB

-4dB

-8dB

-16dB

-31.5dB

Note: C 0.5 = D0, C1 = D1, ... C16 = D5 (for the purpose of the example below)

Serial Port Interface

t6

t1

t2

t4

t5

t3

t8

SPI Timing Diagram

Programming example – 6-bit

CLK

DATA

t7

CLK

DATA

LE

MSB

D5

D4

D3

D2

D1

LSB

D0

LE

t9

DOUT

t10

SPI Timing Diagram Specifications

Parameter

t1

t2

t3

t4

t5

t6

t7

t8

t9

t10

Limit

25

20

5

30

5

10

20

Unit

MHz max

ns min

Comment

CLK Frequency

CLK High

CLK Low

DATA to CLK Setup Time

DATA to CLK Hold Time

Data Valid

LE to CLK Setup Time

CLK to LE Setup Time

LE Pulse Width

Output Set

LOGIC Voltage Levels

State

Low

High

Logic

0V to 0.8V

2.0V to 5.0V

DS110706

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.

5 of 9

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RFSA2624SR Related Products

	RFSA2624SR	RFSA2624TR7	RFSA2624SQ
Description	Variable Attenuator, 50MHz Min, 4000MHz Max, 2.8dB Insertion Loss-Max, 4.20 X 4.20 MM, MCM, QFN-24	Variable Attenuator, 50MHz Min, 4000MHz Max, 2.8dB Insertion Loss-Max, 4.20 X 4.20 MM, MCM, QFN-24	Variable Attenuator, 50MHz Min, 4000MHz Max, 2.8dB Insertion Loss-Max, 4.20 X 4.20 MM, MCM, QFN-24
Is it Rohs certified?	conform to	conform to	conform to
Maker	Qorvo	Qorvo	Qorvo
package instruction	LCC24,.16SQ,20	LCC24,.16SQ,20	LCC24,.16SQ,20
Reach Compliance Code	compliant	compliant	compliant
ECCN code	5A991.G	5A991.G	5A991.G
Nominal attenuation	31.5 dB	31.5 dB	31.5 dB
structure	COMPONENT	COMPONENT	COMPONENT
Maximum input power (CW)	26.99 dBm	26.99 dBm	26.99 dBm
Maximum insertion loss	2.8 dB	2.8 dB	2.8 dB
Installation features	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT
Number of terminals	24	24	24
Maximum operating frequency	4000 MHz	4000 MHz	4000 MHz
Minimum operating frequency	50 MHz	50 MHz	50 MHz
Maximum operating temperature	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
Encapsulate equivalent code	LCC24,.16SQ,20	LCC24,.16SQ,20	LCC24,.16SQ,20
power supply	5 V	5 V	5 V
RF/Microwave Device Types	VARIABLE ATTENUATOR	VARIABLE ATTENUATOR	VARIABLE ATTENUATOR
surface mount	YES	YES	YES

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