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WIRELESS COMMUNICATIONS DIVISION

For additional information and latest specifications, see our website: www.triquint.com

Package Pin-out:

Product Description:

The TQ5638 is a CDMA Rx Receiver designed for KPCS-Band, Dual-Mode operation.
The device supports KPCS CDMA and GPS. The IF range is from 80 MHz to 230MHz
with external tuning. The Low Noise Amplifiers have an adjustable third order intercept
(IP3) to minimize inter-modulation and cross-modulation effects. The mixers are
designed for differential IF outputs (single-ended or differential IF for GPS modes),

and

they feature excellent linearity and low noise figure.

This device is available in a 4X4 mm MLF package with 24 pins. The TQ5638 front-
end receiver is capable of meeting all electrical requirements in accordance with the
TIA/EIA 98-C Wireless Communication standard.

Selected Cascade Electrical Specifications:

Operating Mode (Cascade)

Cascade

Gain

(dB)

Cascade

(dB)

Cascade

IP3

(dBm)

Current

(mA)

PCS-Band, High-Gain, High Linearity

2.2

-2.0

A-GPS

1.7

-17.5

Note 1:

Test Conditions CDMA Mode: V

=2.75VDC, Tc=25°C, IS-95/98 Modulation, Data includes the

following image reject filters (PCS SAWTEK P/N 856080, GPS SAWTEK P/N 856135)

TQ5638

PRELIMINARY DATA SHEET

2.8V SiGe Dual-Mode CDMA
Rx Receiver

Features

KPCS-CDMA and GPS operation

Excellent Cross Modulation Performance

Low current consumption

9.0 dBm PCS LNA IIP3

11.0 dBm PCS Mixer IIP3

Excellent Noise and Gain performance

Adjustable third order intercept on LNA

stage

Flexible IF frequency range from 80 230

MHz

TX LO Buffer included

Small 4x4 Package

Full ESD Protection

Few external components

System Advantage

Most compact integrated receiver for KPCS

CDMA and A-GPS applications

IS-98 IMD requirements met with 2 gain

states simplifying calibration procedures

High mixer linearity eliminates potential call

drop issues associated with gain switching

Enhanced PCS linearity enables use of

FBAR or SAW PCS duplexers

Best I in class A-GPS cascade gain for

maximum takeover

Applications

KPCS band/A-GPS CDMA (IS-95/98) based

mobile phones

Iset

PLNA_IN

VDD_LNA

GLNA_IN

GPS_GND

VDD_LO

PLO_IN

GLO_IN

IX_IN

PLO_OUT

GM_OUT-

GM_OUT+

Vdd_MIX

MIX_GND

PM_OUT-

PM_OUT+

DD_

DIG

IX_IN

BUFFEN

LIN/GPS

S_ON

Logic Control

TQ5638

GND

Preliminary TQ5638

Data Sheet

For additional information and latest specifications, see our website: www.triquint.com

Pin Descriptions:

Pin Name

Pin #

Description and Usage

Iset_PCS

1 Bias resistor for PCS LNA.

PLNA_IN

2 PCS LNA input. Requires a blocking capacitor, which may be used as part of the

input-matching network.

Vdd_LNA

3 Power supply pin for PCS and GPS LNAs. Bypass with a capacitor as close to the

pin as possible.

GLNA_IN

4 GPS LNA input. Requires LC match.

GPS_GND

5 GPS Ground.

Vdd_LO

6 Supply voltage for LO buffers.

GPS_LNA_OUT

7 GPS LNA output.

PLO_IN

8 PCS LO input.

GLO_IN

9 GPS LO input.

GND

10 Ground.

GPS_Mix_IN

11 GPS Mixer input.

PLO_OUT

12 PCS LO buffer output. Does not require a blocking capacitor.

GPS_Mix_OUT-

13 Negative GPS IF output.

GPS_Mix_OUT+

14 Positive GPS IF output.

Vcc_Mix

15 Supply voltage for all mixers.

MIX_GND

16 Mixer Ground.

PCDMA_OUT-

17 Negative CDMA output.

PCDMA_OUT+

18 Positive CDMA output.

Vdd_DIG

19 Supply voltage for Logic Control Circuits.

PM_IN

20 PCS Mixer RF input.

BUFFEN

21 LO output buffer enable. Set BUFFEN pin HIGH to power up the PCS LO buffer

output.

LIN/GPS

22 Logic input for high or low linearity. Logic HIGH selects High Linearity.

PCS_ON

23 Power on for PCS. Logic HIGH selects PCS Band.

PLNA_OUT

24 PCS LNA output. Requires a pull-up inductor to Vcc and a series blocking capacitor,

which can be used as part of the output-matching network.

TQ5638-Preliminary

Data Sheet

For additional information and latest specifications, see our website: www.triquint.com

Absolute Maximum Ratings

Symbol

Parameter

Absolute Maximum

Value

Units

_LNA

CC_

LO_Tx

_MIX, V

_DIG

Power Supply Voltage

-0.5 to 4.0

VDC

PCS_ON, LIN/GPS, BUFFEN

Logic Control Lines

-0.5 to 4.0

VDC

_LNA

_LO_Tx

_MIX, I

_DIG

Supply Currents

PLO_IN, GLO_IN

LO Input Levels

+5.0

dBm

PLNA_IN, GPS_LNA_IN

LNA Input

+5.0

dBm

SET

_PCS

LNA IP3 Adjustment Input

Case Temperature, Survival

-40 to +100

°C

STG

Storage Temperature

-40 to +150

°C

Note: The part may not survive all maximums applied simultaneously.

General Electrical Characteristics

1,2,3

Parameter

Conditions

Min.

Typ/Nom

Max.

Units

PCS Band

1840

1855

1870

MHz

A-GPS Band

1575.42

MHz

Low

1620

1650

MHz

KPCS Band, IF=220.38MHz

High

2060

2090

MHz

Low

1355.04

MHz

LO Frequency Range

GPS Band, IF=220.38MHz

High

1795.80

MHz

IF Range

PCS, and GPS Bands

220.38

230

MHz

LO Input Power Level

PCS, and GPS Bands

-10

-5

dBm

LO Tx Buffer Output Power Level

PCS Band

-8

-3

dBm

Note 1: Test Conditions: V

=2.75VDC, T

= 25

C unless otherwise specified.

Note 2: Min./Max. limits are at +25

C case temperature unless otherwise specified.

Note 3: TriQuint Test Board.

Preliminary TQ5638

Data Sheet

For additional information and latest specifications, see our website: www.triquint.com

Cascade RF Electrical Characteristics (PCS Band, CDMA Modulation)

1,2

Parameter

Conditions

Min.

Typ/Nom

Max.

Units

High Gain, High-Linearity Mode

BAND_SEL = Low, Gain = High, LIN/GPS = High

Cascade Conversion Gain

26.3

Cascade Noise Figure

2.2

Cascade Input IP3

-2

dBm

Supply Current

High Gain, Low-Linearity Mode

BAND_SEL = Low, Gain = High, LIN/GPS = Low

Cascade Conversion Gain

25.3

Cascade Noise Figure

2.3

Cascade Input IP3

-5.5

dBm

Supply Current

20.5

Note 1: Test conditions (devices screened for Conversion Gain, Noise Figure and IIP3 to the above limits): Vcc=2.75V, RF=1855MHz, LO=1635MHz, IF=220MHz, LO
input = -5.0dBm, RF input = -35dBm (High Gain Mode), unless otherwise specified. TriQuint Test Board. Data includes image reject filter (SAWTEK P/N 856080), Note
2:

Min./Max. limits are at +25

C case temperature unless otherwise specified.

Cascade RF Electrical Characteristics (GPS Band)

1,2

Parameter

Conditions

Min.

Typ/Nom

Max.

Units

GPS Mode

BAND_SEL = Low, Gain = Low, LIN/GPS =

High

Cascade Conversion Gain

37.0

Cascade Noise Figure

1.7

Cascade Input IP3

-17.5

dBm

Supply Current

18.5

Note 1: Test conditions (devices screened for Conversion Gain, Noise Figure and IIP3 to the above limits): Vcc=2.75V, RF=1575.42MHz, LO=1355.04MHz,
IF=220.38MHz, LO input = -5.0dBm, RF input = -50dBm. TriQuint Test Board. Data includes image reject filter (SAWTEK P/N 856135)
Note 2:

Min./Max. limits are at +25

C case temperature unless otherwise specified.

DC Supply Electrical Characteristics (All-Modes)

1,2

Parameter

Conditions

Min.

Typ/Nom

Max.

Units

Supply Voltage

2.7

2.75

3.3

Control Voltage High

1.7

Control Voltage Low

0.5

LO Rx Buffer Supply Current

LO Tx Buffer Current

BUFFEN=High

Logic Current

Low, High

-5

100

µA

Power Down Supply Current

PCS_ON= Low, LIN/GPS = Low

µA

Part Number TQ5638