Электронный компонент: HFA3765IA96

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1

�

PRELIMINARY

February 1998

HFA3765

AGC and Quadrature IF Demodulator

Features

DescriptionIF Operation10MHz to 250MHz

� I/Q Amplitude and Phase Balance . . 0.5dB, 2 Degrees

� Voltage Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>60dB

� AGC Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90dB

� Output P1dB With 20pF Load . . . . . . . . . . . . . . . 2.5V

PP

� Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . -10dBm

� Power Enable/Disable Control

� Single Supply Battery Operation . . . . . . . . . 2.7 to 3.3V

Applications

� IS-95A CDMA/AMPS Dual Mode Handsets

� Wideband CDMA Handsets

� Full Duplex Transceivers

� CDMA/TDMA Packet Protocol Radios

Description

The HFA3765 is a monolithic quadra-
ture demodulator and a gain control
amplifier stage with 90dB of dynamic

range for CDMA/AMPS cellular applications. Two amplifier
inputs are provided for interfacing different IF input filters. A
local oscillator input requires low drive levels and a divide by
two phase shifter with duty cycle compensation achieves
excellent phase and amplitude balance properties. The
HFA3765 is one of the four chips in the PRISMTM chip set
and is housed in a 28 lead SSOP package ideally suited to
cellular handset applications.

Pinout

HFA3765

(SSOP)

TOP VIEW

PRISMTM and the PRISMTM logo are trademarks of Intersil Corporation.

Simplified Block Diagram

Ordering Information

PART NUMBER

TEMP.

RANGE (

o

C)

PACKAGE

PKG. NO.

HFA3765IA

-40 to 85

28 Ld SSOP

M28.15

HFA3765IA96

-40 to 85

Tape and Reel

BYP+

BYP-

IF_CDMA+

IF_CDMA-

GND

IF_FM+

IF_FM-

AGC_CTRL

SEL

RX_PE

GND

GND_LO

LO_IN

V+_AGC

IF_OUT-

GND_AGC

GND

DEMOD+

V+_AMP

QOUT-

GND

IOUT+

GND_AMP

IF_OUT+

DEMOD-

QOUT+

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

V+_LO

IOUT-

LO_IN

�

2 0

o

/90

o

I O

U

T

P

UT

Q OU

T

P

U

T

CDM

A

F

M

IF

INP

U

T

AGC_CTRL

CDM

A

/F

M

IF

INP

U

T

BIAS

NETWORK

RX_PE

SEL

SW

IF

O

U

T

+

IF

O

U

T

-

DE

M

O

D-

DE

M

O

D+

File Number

4300.3

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143

|

Intersil (and design) is a registered trademark of Intersil Americas Inc.

Copyright � Intersil Americas Inc. 2002. All Rights Reserved

Pin Descriptions

PIN NUMBER

NAME

DESCRIPTION

1

BYP+

DC feedback pin for the AGC amplifier. Requires good RF decoupling to a solid ground.

2

IF_CDMA+

Non-inverting analog input of the AGC amplifier, CDMA channel.Requires a DC blocking
capacitor. A parallel differential DC coupled resistor setting the input impedance with its
complementary input is possible.

3

IF_CDMA-

Inverting analog input of the AGC amplifier, CDMA channel. Requires a DC blocking ca-
pacitor. A parallel differential DC coupled resistor setting the input impedance with its com-
plementary input is possible. AC couple to ground if the port is to be used single ended.

4

GND

Ground. Connect to a solid ground plane.

5

IF_FM+

Non-inverting analog input of the AGC amplifier, FM channel. Requires a DC blocking ca-
pacitor. A parallel differential DC coupled resistor setting the input impedance with its com-
plementary input is possible.

6

IF_FM-

Inverting analog input of the AGC amplifier, FM channel. Requires a DC blocking capacitor.
A parallel differential DC coupled resistor setting the input impedance with its complemen-
tary input is possible. AC couple to ground if the port is to be used single ended.

7

BYP -

DC feedback pin for the AGC amplifier. Require good RF decoupling to a solid ground.

8

AGC_CTRL

AGC current control input. Requires a 15K 1% series resistor.

9

SEL

Selects the CDMA or FM AGC Amplifier differential input. HIGH selects the CDMA input;
LOW selects the FM input.

10

RX_PE

Power enable control input. HIGH for normal operation. LOW for power down.

11

GND

Ground. Connect to a solid ground plane.

12

GND_LO

LO_IN input ground return. Ground to Local Oscillator ground plane or transmission line.

13

V+_LO

LO divider network Power Supply. Use high quality RF decoupling capacitors at the pin.

14

LO_IN

Current input from the Local Oscillator. Use a 50

power to current converter. See appli-

cations diagram. Requires a DC blocking capacitor.

15

GND_AMP

IF output amplifiers ground return.

16

IOUT-

Negative I channel baseband output. Requires a DC blocking capacitor.

17

IOUT+

Positive I channel baseband output. Requires a DC blocking capacitor.

18

GND

Ground. Connect to a solid ground plane.

19

QOUT-

Negative Q channel baseband output. Requires a DC blocking capacitor.

20

QOUT+

Positive Q channel baseband output. Requires a DC blocking capacitor.

21

V+_AMP

IF output amplifier Power Supply. Use high quality RF decoupling capacitors at the pin.

22

DEMOD+

Positive input of the quadrature demodulator. Requires a DC blocking capacitor.

23

DEMOD -

Negative input of the quadrature demodulator. Requires a DC blocking capacitor.

24

GND_AGC

AGC amplifier main ground return.

25

GND

Ground. Connect to a solid ground plane.

26

IF_OUT-

Negative output from the AGC amplifier. Requires a DC blocking capacitor.

27

IF_OUT+

Positive output from the AGC amplifier. Requires a DC blocking capacitor.

28

V+_AGC

AGC amplifier Power Supply. Use high quality RF decoupling capacitors at the pin.

HFA3765

Absolute Maximum Ratings

Thermal Information

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +3.6V
Voltage on Any Other Pin . . . . . . . . . . . . . . . . . . -0.3V to V

CC

+0.3V

Operating Conditions

Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7 to 3.3V
Temperature Range . . . . . . . . . . . . . . . . . . . . . . -40

o

C

T

A

85

o

C

Thermal Resistance (Typical, Note 1)

JA

(

o

C/W)

SSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .

88

Maximum Junction Temperature (Plastic Package) . . . . . . . . 150

o

C

Maximum Storage Temperature Range . . . . . . -65

o

C

T

A

150

o

C

Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . . 300

o

C

(Lead Tips Only)

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTE:

1.

JA

is measured with the component mounted on an evaluation PC board in free air.

Electrical Specifications

PARAMETER

TEST CONDITIONS

(NOTE

2)

TEST

LEVEL

TEMP

(

o

C)

MIN

TYP

MAX

UNITS

OVERALL CASCADED SPECIFICATIONS, V

CC

= 2.7V, IF_IN = Differential - 60dBm or higher at 85MHz

IF Frequency Range

B

Full

10

85

250

MHz

Baseband Frequency Range

B

Full

0

-

1

MHz

LO Frequency Range

B

Full

20

170

500

MHz

AGC Gain Control Voltage Range

A

Full

0.5

-

2.4

V

AGC Gain Control Sensitivity

A

25

-

60

-

dB/V

AGC Gain Control Slope Change

A

25

-

1.2:1

3:1

-

Insertion Phase vs AGC

B

25

-

0.1

-

deg/dB

Gain Switching Speed, Full Scale

To

�1dB Settling

B

25

-

TBD

10

�s

Amplitude Balance (Note 3)

A

Full

-0.5

0

0.5

dB

Phase Balance (Note 3)

A

Full

-2

0

+2

Degrees

Power Gain

500

in, 5000

Differential load.
AGC_CTRL set for
48

�0.2dB of powergain

(CDMA and FM mode)

A

Full

-

48

-

dB

Voltage Gain

A

Full

-

58

-

dB

Noise Figure (CDMA, SEL = HIGH)

B

Full

-

6.6

7.5

dB

Noise Figure (FM, SEL = LOW)

B

Full

-

6.9

8.0

dB

IP3, Output

A

Full

0.5

4.8

-

dBm

P1dB Output

A

Full

-10

-5

-

dBm

Voltage Gain

500

in, 5000 load

AGC_CTRL set for
38

�0.2dB of powergain

(CDMA and FM mode)

B

Full

-

48

-

dB

Noise Figure

B

Full

-

8.4

-

dB

IP3, Output

B

Full

-

4.4

-

dBm

P1dB Output

B

Full

-

-6

-

dBm

Voltage Gain

500

in, 5000 load

AGC_CTRL set for
28

�0.2dB of powergain

(CDMA and FM mode)

B

Full

-

38

-

dB

Noise Figure

B

Full

-

11

-

dB

IP3, Output

B

Full

-

3.2

-

dBm

P1dB Output

B

Full

-

-8

-

dBm

Voltage Gain

500

in, 5000 load

AGC_CTRL set for
18

�0.2dB of powergain

(CDMA and FM mode)

B

Full

-

28

-

dB

Noise Figure

B

Full

-

14

-

dB

IP3, Output

B

Full

-

-1.0

-

dBm

P1dB Output

B

Full

-

-11

-

dBm

HFA3765

Voltage Gain

500

in, 5000 load

AGC_CTRL set for
8

�0.2dB of powergain

(CDMA and FM mode)

B

Full

-

18

-

dB

Noise Figure

B

Full

-

20

-

dB

IP3, Output

B

Full

-

-7.2

-

dBm

P1dB Output

B

Full

-

-17

-

dBm

Voltage Gain

500

in, 5000 load

AGC_CTRL set for
-2

�0.2dB of powergain

(CDMA and FM mode)

B

Full

-

8

-

dB

Noise Figure

B

Full

-

28

-

dB

IP3, Output

B

Full

-

-15.2

-

dBm

P1dB Output

B

Full

-

-25

-

dBm

Voltage Gain

500

in, 5000 load

AGC_CTRL set for
-12

�0.2dB of powergain

(CDMA and FM mode)

A

Full

-

-2

-

dB

Noise Figure

B

Full

-

37

-

dB

IP3, Output

A

Full

-26

-24.2

-

dBm

P1dB Output

A

Full

-36

-33

-

dBm

Voltage Gain

500

in, 5000 load

AGC_CTRL set for
-25

�0.2dB of powergain

(CDMA and FM mode)

A

Full

-

-15

-

dB

Noise Figure

B

Full

48

-

dB

IP3, Output

A

Full

-38

-35.2

-

dBm

P1dB Output

A

Full

-48

-46

-

dBm

LO Current Input Impedance

Single end

C

25

-

130

-

LO Drive Level

Applications diagram

A

25

-

-10

-

dBm

LO Drive Optimal Current Range

B

25

50

200

300

�A

Baseband Differential Load Resistance

B

Full

-

5000

-

Baseband Single ended Load Capacitance

B

Full

-

-

20

pF

Baseband Differential Load Capacitance

B

Full

-

-

10

pF

Single end Input Impedance CDMA or FM Measured single end

B

25

-

1500

-

Differential Input Impedance CDMA or FM Measured differential

B

25

-

3300

-

AGC Gain Control Input Impedance

Set externally

C

25

15K

-

-

AGC Amp Output Differential Impedance

C

25

-

80

-

POWER SUPPLY AND LOGIC SPECIFICATIONS

Supply Voltage Range

A

Full

2.7

-

3.3

V

Total Supply Current

V

CC

= 3.3V

A

Full

-

28

-

mA

Power Down Supply Current

V

CC

= 3.3V

A

Full

-

1

100

�A

Power Up/Down Speed

B

25

-

-

10

�s

RX_PE and SEL V

IL

A

Full

-

-

0.2*V

CC

V

RX_PE and SEL V

IH

A

Full

2.0

-

-

V

RXPE and SEL Input Bias Current

V

IH

= 2.0V, V

CC

= 3.3V

A

Full

-50

-

+50

�A

V

IL

= 0.66V, V

CC

= 2.7V

A

Full

-50

-

+50

�A

NOTES:

2. A = Production Tested, B = Based on Characterization, C = By Design
3. A positive frequency offset from the carrier produces the I channel leading the Q channel by 90 degrees.

Electrical Specifications

(Continued)

PARAMETER

TEST CONDITIONS

(NOTE

2)

TEST

LEVEL

TEMP

(

o

C)

MIN

TYP

MAX

UNITS

HFA3765

Typical Applications Diagram

0

o

/90

o

�

2

1

220

1000p

56

IF_LO_INPUT

V+_AGC

BYP+

GND_AGC

IFOUT+

IFOUT-

IF_CDMA

IF_FM

+

-

+

-

BYP-

1000p

0.1

1000p

0.03

100p

1000p

1000p

10

00

p

10

00p

GND_AMP

QOUT

+

-

IOUT

+

-

GND

GND

DEMOD

GND

GND

SEL

RX_PE

GND_LO

V+_LO
LO_IN

HFA3765

0.01

10p

SEL

PE

V

CC

15K

BEAD

0.01

0.1

+

-

CDMA IF

FM IF

I+

Q+

I-

Q-

AGC_CTRL

0.1

0.1

0.1

0.1

560

680

1000p

220n

220n

22.7p

SAWTEK

855292

220n

MURATA

SX0439A

820n

4.1p

AGC_CTRL

V+_AMP

Document Outline

• 1. Symbols are defined in the �MO Series Symbol List� in Section 2.2 of Publication Number 95.
  • 2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
  • 3. Dimension �D� does not include mold flash, protrusions or gate burrs. Mold flash, protrusion ...
  • 4. Dimension �E� does not include interlead flash or protrusions. Interlead flash and protrusion...
  • 5. The chamfer on the body is optional. If it is not present, a visual index feature must be loc...
  • 6. �L� is the length of terminal for soldering to a substrate.
  • 7. �N� is the number of terminal positions.
  • 8. Terminal numbers are shown for reference only.
  • 9. Dimension �B� does not include dambar protrusion. Allowable dambar protrusion shall be 0.10mm...
  • 10. Controlling dimension:INCHES. Converted millimeter dimensions are not necessarily exact.
• HFA3765
• HFA3765
• HFA3765
  • 1
  • BYP+
  • 2
  • IF_CDMA+
  • 3
  • IF_CDMA-
  • 4
  • GND
  • 5
  • IF_FM+
  • 6
  • IF_FM-
  • 7
  • BYP -
  • 8
  • AGC_CTRL
  • 9
  • SEL
  • 10
  • RX_PE
  • 11
  • GND
  • 12
  • GND_LO
  • 13
  • V+_LO
  • 14
  • LO_IN
  • 15
  • GND_AMP
  • 16
  • IOUT-
  • 17
  • IOUT+
  • 18
  • GND
  • 19
  • QOUT-
  • 20
  • QOUT+
  • 21
  • V+_AMP
  • 22
  • DEMOD+
  • 23
  • DEMOD -
  • 24
  • GND_AGC
  • 25
  • GND
  • 26
  • IF_OUT-
  • 27
  • IF_OUT+
  • 28
  • V+_AGC
    • 1. qJA is measured with the component mounted on an evaluation PC board in free air.
  • B
  • Full
  • 10
  • 85
  • 250
  • MHz
  • B
  • Full
  • 0
  • -
  • 1
  • MHz
  • B
  • Full
  • 20
  • 170
  • 500
  • MHz
  • A
  • Full
  • 0.5
  • -
  • 2.4
  • V
  • A
  • 25
  • -
  • 60
  • -
  • dB/V
  • A
  • 25
  • -
  • 1.2:1
  • 3:1
  • -
  • B
  • 25
  • -
  • 0.1
  • -
  • deg/dB
  • B
  • 25
  • -
  • TBD
  • 10
  • ms
  • A
  • Full
  • -0.5
  • 0
  • 0.5
  • dB
  • A
  • Full
  • -2
  • 0
  • +2
  • Degrees
  • A
  • Full
  • -
  • 48
  • -
  • dB
  • A
  • Full
  • -
  • 58
  • -
  • dB
  • B
  • Full
  • -
  • 6.6
  • 7.5
  • dB
  • B
  • Full
  • -
  • 6.9
  • 8.0
  • dB
  • A
  • Full
  • 0.5
  • 4.8
  • -
  • dBm
  • A
  • Full
  • -10
  • -5
  • -
  • dBm
  • B
  • Full
  • -
  • 48
  • -
  • dB
  • B
  • Full
  • -
  • 8.4
  • -
  • dB
  • B
  • Full
  • -
  • 4.4
  • -
  • dBm
  • B
  • Full
  • -
  • -6
  • -
  • dBm
  • B
  • Full
  • -
  • 38
  • -
  • dB
  • B
  • Full
  • -
  • 11
  • -
  • dB
  • B
  • Full
  • -
  • 3.2
  • -
  • dBm
  • B
  • Full
  • -
  • -8
  • -
  • dBm
  • B
  • Full
  • -
  • 28
  • -
  • dB
  • B
  • Full
  • -
  • 14
  • -
  • dB
  • B
  • Full
  • -
  • -1.0
  • -
  • dBm
  • B
  • Full
  • -
  • -11
  • -
  • dBm
  • B
  • Full
  • -
  • 18
  • -
  • dB
  • B
  • Full
  • -
  • 20
  • -
  • dB
  • B
  • Full
  • -
  • -7.2
  • -
  • dBm
  • B
  • Full
  • -
  • -17
  • -
  • dBm
  • B
  • Full
  • -
  • 8
  • -
  • dB
  • B
  • Full
  • -
  • 28
  • -
  • dB
  • B
  • Full
  • -
  • -15.2
  • -
  • dBm
  • B
  • Full
  • -
  • -25
  • -
  • dBm
  • A
  • Full
  • -
  • -2
  • -
  • dB
  • B
  • Full
  • -
  • 37
  • -
  • dB
  • A
  • Full
  • -26
  • -24.2
  • -
  • dBm
  • A
  • Full
  • -36
  • -33
  • -
  • dBm
  • A
  • Full
  • -
  • -15
  • -
  • dB
  • B
  • Full
  • 48
  • -
  • dB
  • A
  • Full
  • -38
  • -35.2
  • -
  • dBm
  • A
  • Full
  • -48
  • -46
  • -
  • dBm
  • C
  • 25
  • -
  • 130
  • -
  • W
  • A
  • 25
  • -
  • -10
  • -
  • dBm
  • B
  • 25
  • 50
  • 200
  • 300
  • mA
  • B
  • Full
  • -
  • 5000
  • -
  • W
  • B
  • Full
  • -
  • -
  • 20
  • pF
  • B
  • Full
  • -
  • -
  • 10
  • pF
  • B
  • 25
  • -
  • 1500
  • -
  • W
  • B
  • 25
  • -
  • 3300
  • -
  • W
  • C
  • 25
  • 15K
  • -
  • -
  • W
  • C
  • 25
  • -
  • 80
  • -
  • W
  • A
  • Full
  • 2.7
  • -
  • 3.3
  • V
  • A
  • Full
  • -
  • 28
  • -
  • mA
  • A
  • Full
  • -
  • 1
  • 100
  • mA
  • B
  • 25
  • -
  • -
  • 10
  • ms
  • A
  • Full
  • -
  • -
  • 0.2*VCC
  • V
  • A
  • Full
  • 2.0
  • -
  • -
  • V
  • A
  • Full
  • -50
  • -
  • +50
  • mA
  • A
  • Full
  • -50
  • -
  • +50
  • mA
    • 2. A = Production Tested, B = Based on Characterization, C = By Design
    • 3. A positive frequency offset from the carrier produces the I channel leading the Q channel by ...
• HFA3765
  • A
  • -
  • A1
  • -
  • A2
  • -
  • -
  • 1.54
  • -
  • B
  • 9
  • C
  • -
  • D
  • 3
  • E
  • 4
  • e
  • 0.025 BSC
  • 0.635 BSC
  • -
  • H
  • -
  • h
  • 5
  • L
  • 6
  • N
  • 28
  • 28
  • 7
  • a
  • 0o
  • 8o
  • 0o
  • 8o
  • -
    • PRELIMINARY
• HFA3765
  • AGC and Quadrature IF Demodulator
  • -40 to 85
  • -40 to 85
  • HFA3765 (SSOP)
    • TOP VIEW
  • PRISM� and the PRISM� logo are trademarks of Intersil Corporation.