datasheet4u.com

900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf





Analog Intergrations Corporation
Analog Intergrations Corporation

AIC1840 Datasheet Preview

AIC1840 Datasheet

REGULATED GaAsFET BIAS

No Preview Available !

AIC1840 pdf
PRELIMINARY
AIC1840/1841
LOW-NOISE, REGULATED GaAsFET BIAS
SPEC NO: DS-1840-P2
! FEATURES
" Low Output Noise: 2mV Ripple.
" Work with Small Capacitors (as Low as 0.22µF).
" Fixed -2V or Adjustable Output.
" 2.5V to 6.5V Input Voltage Range.
" Switching Frequency: 104KHz in Normal Operation.
" 1µA Maximum in Shutdown Mode.
! APPLICATIONS
" Cellular Phones.
" GaAsFET Power Amplifier Modules.
" Personal Communicators and PDAs.
" Wireless Data Loggers.
" LCD Bias Contrast Control.
" Regulated Negative Power Supplies.
! DESCRIPTION
The AIC1840/1841 is a switched-capacitor volt-
age inverter that generates a regulated fixed
-2.0V or externally adjustable output. An internal
linear post-regulator reduces the output voltage
ripple to less than 2mV, making the
AIC1840/1841 excellent for use as bias voltage
generator for transmitter GaAsFETs in portable
RF and cellular telephone applications. The op-
eration voltage is as low as 2.5V.
The AIC1840/1841 offers a -2V preset output as
well as a -1.3V to -3.0V adjustable output. Input
voltage range for AIC1840/1841 is 2.5V to 6.5V.
Output current is 5mA at VOUT= -2V and with
VIN2.5V. Quiescent current is 510µA at VIN=3.6V
and reduces to less than 1µA in shutdown mode
(3µA max. for the AIC1841).
! TYPICAL APPLICATION CIRCUIT
The AIC1840 has an active-low shutdown input,
while the AIC1841 has an active-high shutdown
input.
VBAT (+2.5 ~ +6.5V)
VTX
C3
3.3µF
+
C8 L1
C9
RF INPUT
8
RF POWER AMPLIFIER
L2
T1
C1
3.3µF
+
1
2
VDD
CAPP VOUT
6 VOUT(VGS)= -2.0V
CAPN
C4
3 AIC1841
3.3µF + C5
C2
3.3µF
VNN
5
4 FB
SHDN
GND
+
7
VSHDN
R1
C6
C7
T2
C11
C10
RF OUTPUT
Bias Generator for GaAsFET Power Amplifier
! ORDERING INFORMATION
AIC1840 XX
AIC1841 XX
PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE
TEMPERATURE RANGE
C: 0°C~+70°C
ORDER NUMBER
AIC1840CN
AIC1841CN
(PLASTIC DIP)
AIC1840CS
AIC1841CS
(PLASTIC SO)
PIN CONFIGURATION
TOP VIEW
CAPP 1
CAPN 2
VNN 3
SHDN 4
(AIC1840)
*SHDN (AIC1841)
8 VDD
7 GND
6 VOUT
5 FB
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: (8863)577-2500 FAX:(8863)577-2510
1



Analog Intergrations Corporation
Analog Intergrations Corporation

AIC1840 Datasheet Preview

AIC1840 Datasheet

REGULATED GaAsFET BIAS

No Preview Available !

AIC1840 pdf
AIC1840/1841
LOW-NOISE, REGULATED GaAsFET BIAS
SPEC NO: DS-1840-P2
! ABSOLUTE MAXIMUM RATINGS
Supply Voltage ......................................................……………..................…............. 7V
Operating Temperature Range ....................................………...................... -25°C~80°C
Storage Temperature Range ...............................……………...................... -65°C~150°C
! TEST CIRCUIT
VIN
1 CAPP
+ 1µF
C1
2
CAPN
8
VDD
+
7
GND
1µF
C3
VIN
1µF
+ C2
AIC1840/1841
3 VNN
6
VOUT
C4
10µF
4 SHDN
SHDN
FB 5
+
VOUT=-2V
RL
! ELECTRICAL CHARACTERISTICS (VIN=3.6V, Ta=25°C, unless otherwise specified.)
PARAMETER
Supply Voltage Range
Output Voltage
Output Voltage Adjustment
Range
Set Voltage
Supply Current
Shutdown Mode Current
Output Load Regulation
Output Ripple
Oscillator Frequency
Shutdown Pin High Voltage
Shutdown Pin Low Voltage
TEST CONDITIONS
VIN2.5V, IOUT=0~5mA
VIN=6.5V
SYMBOL MIN. TYP. MAX. UNIT
VDD 2.5
6.5 V
VOUT
-2.1 -2.0 -1.9
V
VOUT
-1.3 ~ -3.0
V
No Load
No Load, VIN=3.6V
AIC1840 SHDN=0, VIN=5V
AIC1841 SHDN=2V, VIN=5V
VIN=3.6V, RL=or 400
C4=10µF
VIN=3.6V
VIN=3.6V
VIN=3.6V
VFBSET
IQ
ISHDN
FOSC
VIH
VIL
-1.25
79
2.0
-1.15
510
1
2
2
104
-1.05 V
800 µA
1 µA
3
8 mV/mA
mVp-p
129 KHz
V
0.5 V
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: (8863)577-2500 FAX:(8863)577-2510
2


Part Number AIC1840
Description REGULATED GaAsFET BIAS
Maker Analog Intergrations Corporation
Total Page 7 Pages
PDF Download
AIC1840 pdf
AIC1840 Datasheet PDF
[partsNo] view html
View PDF for Mobile








Similar Datasheet

1 AIC1840 REGULATED GaAsFET BIAS Analog Intergrations Corporation
Analog Intergrations Corporation
AIC1840 pdf
2 AIC1841 High Efficiency 1.5X charge Pump Analog Intergrations Corporation
Analog Intergrations Corporation
AIC1841 pdf
3 AIC1841 REGULATED GaAsFET BIAS Analog Intergrations Corporation
Analog Intergrations Corporation
AIC1841 pdf
4 AIC1842 High Efficiency 1.5X charge Pump Analog Intergrations Corporation
Analog Intergrations Corporation
AIC1842 pdf
5 AIC1845 Regulated 5V Charge Pump In SOT-23 Analog Integrations
Analog Integrations
AIC1845 pdf
6 AIC1848 Regulated 5V Charge Pump In SOT-23 Analog Integrations
Analog Integrations
AIC1848 pdf





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy