AS3801 [AMSCO]

CDMA/FM TRANSMIT AGC AMPLIFIER AS3801; CDMA / FM发送AGC放大器AS3801


型号：	AS3801
厂家：	AMS(艾迈斯)
描述：	CDMA/FM TRANSMIT AGC AMPLIFIER AS3801 CDMA / FM发送AGC放大器AS3801 放大器 CD
文件：	总7页 (文件大小：78K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Preliminary Data Sheet

AS3801

CDMA/FM TRANSMIT AGC

AMPLIFIER AS3801

Austria Mikro Systeme International AG

Key Features

General Description

Supports dual mode operation.

The AS3801 is a gain controlled amplifier designed

for the transmit section of dual mode CDMA/FDM,

TDMA/FDM or FM/FDM cellular phones.

-45dB to +40db gain control guaranteed.

High OIP3 of 15dBm @ max. gain @ -51dBm

input power.

Key specifications like gain range, noise figure, IP3,

temperature range and other specifications are

designed to be in line with the IS-95 standard for

CDMA cellular communications.

Single 3.6V supply.

Temperature and supply stabilized.

Power down feature.

The circuit is designed for narrow band IF

applications but can also be used in wideband

applications.

100MHz to 300MHz operation.

Silicon BiCMOS process.

Miniature surface mount 16 pin, 150 mil SSOP

package.

Applications

Digital cellular systems with transmission

methods: CDMA/FDM, TDMA/FDM, FM/FDM

and TDMA/TDD.

Compatibility

Examples: IS-95 CDMA, IS-54 DAMPS, AMPS,

PWT.

The AS3801 is designed to be functionally or/and

pin compatible to the following products:

Cordless phones analog / digital.

General purpose linear IF amp’s.

WLL / WLAN.

RF9909

Q5505

(RF Micro Devices), pin compat.

(Qualcomm), pin compat.

CXA3002N (Sony)

CDMA+

VCTRL

VCC

CDMA-

GND

PWD

VCC

GND

OUT+

OUT-

SSOP-16

This document contains information on products under development. Austria Mikro Systeme Intl. AG reserves

the right to change or discontinue this product without notice.

Rev. C

1/7

Nov. 98

Preliminary Data Sheet

AS3801

Absolut Maximum Ratings (non operating)

Symbol

Parameter

min

max

Unit

Note

VDD

GND

Vin

Positive Supply Voltage

Analog Ground

-0.5

VDD+0.5

Voltage at every Input Pin

Gnd-0.5

-40

Iin

Input Current

(into any pin except supply pins and

except low leakage pin)

Iin_15

Input Current into Low Leakage Pin

Humidity Noncondensing

Electrostatic Discharge

Storage Temperature

-25

-55

ESD

Tstg

Tlead

1000

125

deg C

Lead Temperature

260

Notes:

1) Defined DIN 40040 cond. F.

2) HBM: R=1.5kOhm, C=100pF.

Open collector outputs have less ESD protection because the protection diode to the positive supply

cannot be implemented (The output swing is higher than Vpos.+0.7V).

3) 260 deg C for 10 sec (Reflow and wave soldering), 360 deg C for 3 sec (Manual soldering).

The above figures conform to CMOS standard for low leakage application.

Recommended Operating Conditions

Symbol

Parameter

min

typ

max

Unit

Note

VDD

GND

Idd

Positive Supply Voltage

Analog Ground

3.6

Supply Current

deg C

Tamb

Ambient Temperature Range,

Operating Range

-30

+80

Notes:

1) 3.6V ± 5%.

2) Measured at pin VDD, see test schematic, no signal.

Rev. C

2/7

Nov. 98

Preliminary Data Sheet

AS3801

TX AGC Electrical Characteristics

Parameter

min

typ

max

Unit

Note

Frequency Range

Maximum Gain

Minimum Gain

Noise Figure

100-300

MHz

f_-3dB=300MHz

V_G=3V

-45

V_G=0.2V

6.8

max. Gain

max. Gain 1)

Output IP3

dBm

Gain Variation

+/-0.05

(in +/-630 kHz bandwidth, centered

at 130MHz)

Gain Slope Linearity

(over any 6dB segment)

+/- 3

-32 to +72 deg.C

Gain Control Voltage Range

0.2-3

0.2V min. Gain

3.0V max. Gain

ref. to GND

Gain Control Input Impedance

Current Consumption

Input Resistance

1k diff.

Output Impedance

Open Collector

1k W diff. outside

(500W eff.)

Power Down Mode

Notes:

Specifications refered to 130MHz.

1) Two tone measurement is used.

f₁=131MHz; f₂=132MHz; Input power is -51dBm.

2) Highº Active, Lowº Power save, Input impedance ³ 16kW.

Rev. C

3/7

Nov. 98

Preliminary Data Sheet

AS3801

Pin Description

Pin#

Symbol

Function

CDMA+

CDMA-

GND

CDMA Positive Differential Input

CDMA Negative Differential Input

Analog Ground

GND

Analog Ground

GND

Analog Ground

GND

Analog Ground

GND

Analog Ground

PWD

Power down, CMOS Input

V_PWD-RX>=3.4V, RX-AGC Active

V_PWD-RX<=0.5V, RX-AGC Off

OUT-

OUT+

GND

Analog Differential Output

Analog Ground

GND

Analog Ground

VCC

VCC Power Supply

Analog Control Input

VCC

VCTRL

VCTRL=0.2V, Low Gain Rail; VCTRL=3V, High Gain Rail

Definition of Load Impedance, Z_L, and

AS3801 Output Impedance Z_O

Definition of CDMA Source Impedance,

Z_S, and AS3801 Input Impedance Z_IN

Zs=1k

VCC

Measurement

Reference Plane

TX-CDMA

CDMA+

CDMA-

R_B

IF Signal

Source

OUT+

OUT-

Output

Port

ZL_eff

Z₀

Z_L

Zin=1k (typ)

TX-CDMA Output Port Impedance

Load Impedance

Z_O>10kW

Z_L=1kW

Bias Resistor

R=1kW

Bias Inductors

L₁=L₂=Choke,

w.L>>R_B

Effective Load

Z_Leff=500W

Rev. C

4/7

Nov. 98

Preliminary Data Sheet

AS3801

Transfer Characteristic

60,00

40,00

20,00

0,00

Gain, TX 25 degC

TX, Spec

0,5

1,5

2,5

3,5

GainTX, -32degC

Gain TX, 72 degC

-20,00

-40,00

-60,00

-80,00

Vcntrl [V]

Intermodulation Performance

IIP3, TX AGC, 130 MHz, Vdd= 3.6V, Pin = -51 dBm

-20

-40

-60

OIP3

IIP3

-10

-20

-30

-40

-80

Pim

-100

-120

-140

Gain [dB]

Rev. C

2/7

Nov. 98

Preliminary Data Sheet

Compression Behaviour

AS3801

-1 dB

-10

-20

-30

-40

-50

-60

Gain, Tx

Pout, TX

-90

-80

-70

-60

-50

-40

-30

-20

-10

Pin [dBm]

Rev. C

3/7

Nov. 98

Preliminary Data Sheet

AS3801

Typical Application @ 130MHz

The information furnished herein by Austria Mikro Systeme International is substantially correct and accurate. However, Austria Mikro Systeme

International shall not be liable to licensee or any third party for any damages, including but not limited to personal injury, property damage, loss

of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising

out of the furnishing, performance or use of the technical data. No obligation or liability to licensee or any third party shall arise or flow out of

Austria Mikro Systeme International’s rendering of technical or other services.

Austria Mikro Systeme International makes no warranty, express, statutory, implied, or by description regarding the information set forth herein

or regarding the freedom of the described devices from patent infringement. Austria Mikro Systeme International reserves the right to change

specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with

Austria Mikro Systeme International for current information. This product is intended for use in normal commercial applications. Applications

requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-

support or life-sustaining equipment are specifically not recommended without additional processing by Austria Mikro Systeme International for

each application.

material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.

Rev. C

4/7

Nov. 98

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