Datasheet CXA3221AN Datasheet (Sony)

RX Gain Control Amplifier

Description

CXA3221AN is an RX gain control amplifier suitable

for CDMA cellular/PCS phone.

Features

• Wide gain control range

• Linear gain slope

• Wideband operation (50MHz to 300MHz)

• Very small package (8 Pin SSOP)

• Low voltage operation

• Power save function included

Absolute Maximum Ratings

• Supply voltage VCC 6V

•Operating temperature Topr –55 to +125 °C

• Storage temperature Tstg –65 to +150 °C

• Supply voltage range –0.3 to 6 V

• Logic input voltage –0.3 to VCC + 0.3V

• Signal input voltage –0.3 to VCC + 0.3V

•

Differential signal input voltage

0 to 2.5 V

Operating Condition

Supply voltage VCC 2.7 to 3.8 V

Applications

CDMA cellular/PCS phone

Structure

Bipolar silicon monolithic IC

– 1 –

E98910A8Y

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

CXA3221AN

8 pin SSOP (Plastic)

– 2 –

CXA3221AN

Block Diagram

Pin Configuration

OUT

OUTX

IF Output

GCTL

VCC

GND

PSV

Gain control

Supply Voltage

Ground

Power Save

CDMA IN

CDMA INX

IF Input for CDMA

Bias Driver

3

CDMA INX

6

OUTX

1

GND

GCTL

8

4

PSV

5

OUT

2

CDMA IN

V

CC

7

– 3 –

CXA3221AN

Pin No.

Symbol

Pin voltage

TYP (V)

Equivalent circuit Description

2k

GND

2k

VCC

2

3

2 CDMA IN

Differential input pins for received CDMA IF signal.

Ground.

3

CDMA INX

1.15

1

GND

0

Positive power supply.

7

VCC

3.0

1.15

Pin Description

4 PSV

Power save function pin. High: Active Low: Power save

—

GND

VCC

135k

4

GND

VCC

12.3k

460460

6

5

5 OUT

Differential output pins for received CDMA IF signal. Open collector output.

6

OUTX

8 GCTL

Gain control pin.

—

GND

V

CC

6k6k

8

8k8k

200

– 4 –

CXA3221AN

∗1

Adjust GCTL voltage, and set the overall gain to 40dB.

Electrical Characteristics

DC Characteristics

Current consumption 1 Current consumption 2 Input current pin 8H Input current pin 8L Input current pin 16H Input current pin 16L PSV high voltage PSV low voltage

ICC1 ICC2 IpsvH IpsvL IgctlH IgctlL VpsH VpsL

mA

µA

V

Parameter Symbol Conditions Min. Unit

Vpsv = 3.0V, Vgctl = 1.5V, Pin 7 Vpsv = 0 V, Vgctl = 1.5V, Pin 7 Vpsv = 3.0V Vpsv = 0 V Vgctl = 3.0V Vgctl = 0.5V Pin 4 Pin 4

7 5

–15

–1

2.5

Typ.

10.2 18

Max.

15 40

1

0.5

(VCC = 3.0V, Ta = 27°C)

AC Characteristics

Operating frequency range

Gain 2.4 Gain 1.5 Gain 0.6 Gain slope

Input level 3rd order intercept point

Noise Figure

Fr G2.4

G1.5 G0.6 GCLIN

IIP3

NF

MHz

dB

dB/V

dBm

dB

Parameter Symbol Conditions Min.

Unit

f = 210.38MHz, Vgctl = 2.4V Vgctl = 1.5V Vgctl = 0.6V Gain at Vgctl = 2.0V – Gain at Vgctl = 1.0V G = 40dB

∗1

f1 = 209.38MHz, f2 = 211.38MHz Measure of 210.38MHz

G = 40dB

∗1

Measure of 210.38MHz

50 42

–7

–59

58

–42

Typ.

46 –3

–55

61

–38

5

Max.

300

50

1

–51

64

8

(VCC = 3.0V, Ta = 27°C)

– 5 –

CXA3221AN

Measurement Circuit

1000p

180n

A7

0.01µ

A4

A8

10k

0.01µ

V8

1.6k

∗1

OUTPUT

1

GND

2

CDMA IN

3

CDMA INX

4

PSV

OUT

5

OUTX

6

V

CC

7

GCTL

8

∗1

CDMA INPUT

∗

2

150n

∗

3

150n

∗

3

∗

1

TOKO, Inc. B5FL 616DS-1135

∗

2

Coilcraft, Inc. 0805HS-181TKBC

∗

3

Coilcraft, Inc. 0805HS-151TKBC

Application Circuit

∗

1000p

∗

1k

0.01µ Gain Control

Voltage

0.01µ

Active

Sleep

1000p

∗

8

GCTL

7

V

CC

6

OUTX

5

OUT

1

GND

2

CDMA IN

3

CDMA INX

4

PSV

VCC

100p

RX IF OUTPUT

RX IF INPUT

Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.

∗

Must be adjusting values to result a best impedance matching between BPF filter and this IC.

– 6 –

CXA3221AN

Design Reference Values

Single ended measurement (VCC = 3.0V, Ta = 27°C)

Item

Symbol

Conditions Input resistance Input capacitance Output resistance Output capacitance

Rin Cin Rout Cout

Typ.

1.6

1.3

5.9

0.73

Unit

kΩ pF kΩ pF

f = 210.38MHz, Vgctl = 1.5V

Notes on Operation

1) This IC is a wideband amplifier with wide gain control range. The decouping capacitors between GND Pin and VCC Pin should be as close to the IC as possible.

2) The resistors connected to Pins 5 and 6 should be as close to the IC as possible.

3) This IC assumes the excellent characteristics when the differential input impedance between Pins 2 and 3 is 500Ω. Refer to the Measurement Circuit for the external element settings, etc.

4) Pay attention to handling this IC because its electrostatic discharge strength is weak.

– 7 –

CXA3221AN

Sensitivity

0

Vgctl [V]

0.5 1 1.5 2 2.5 3

–80

–60

–40

–20

0

20

40

60

Power gain [dB]

T = –40°C T = 27°C T = 85°C

VCC = 3.0V

Gain Error from Room Temp

–80

Power gain [dB]

0 20 40 60

–6

–4

–2

2

4

6

Gain error [dB]

T = –40°C T = 85°C

VCC = 3.0V

0

–60 –40 –20

IIP3

–80

Power gain [dB]

–60 –20 0 20 40 60

–60

–50

–40

–30

–20

–10

0

IIP3 [dBm]

T = –40°C T = 27°C T = 85°C

VCC = 3.0V

–40

Noise Figure

–10

Power gain [dB]

0 20 30 40 50 60

0

5

10

15

20

25

Noise figure [dB]

T = –40°C T = 27°C T = 85°C

VCC = 3.0V

10

– 8 –

CXA3221AN

Package Outline Unit: mm

SONY CODE

EIAJ CODE

JEDEC CODE

PACKAGE MATERIAL

LEAD TREATMENT

LEAD MATERIAL PACKAGE MASS

EPOXY RESIN

SOLDER / PALLADIUM

COPPER ALLOY

PACKAGE STRUCTURE

SSOP-8P-L01

PLATING

SSOP008-P-0044

0.04g

8PIN SSOP (PLASTIC)

0.24 – 0.07

+ 0.08

0.65

∗3.0 ± 0.1

∗4.4 ± 0.1

1.25 – 0.1

+ 0.2

0.1

A

6.4 ± 0.2

B

0.24 – 0.07

+ 0.08

(0.22)

0.17 – 0.015

+ 0.025

(0.15)

0.1 ± 0.05

0.25

0° to 10°

0.6 ± 0.15

(0.5)

1

4

58

0.13

M

DETAIL B

A

DETAIL

NOTE: Dimension “∗” does not include mold protrusion.