http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf





Micro Analog Systems
Micro Analog Systems

MAS9081 Datasheet Preview

MAS9081 Datasheet

Stand-alone Dual Band Time Signal AM Receiver IC

No Preview Available !

MAS9081 pdf
www.DataSheet4U.com
DA9081.006
1 August, 2005
MAS9081
Dual Band Receiver IC
High Sensitivity
Very Low Power Consumption
Wide Supply Voltage Range
Power Down Control
Control for AGC On
High Selectivity by Crystal Filter
Fast Startup Feature
DESCRIPTION
The MAS9081 AM-Receiver chip is a highly sensitive,
simple to use AM receiver specially intended to
receive time signals in the frequency range from 40
kHz to 100 kHz. Only a few external components are
required for time signal receiving. The circuit has
preamplifier, wide range automatic gain control,
demodulator and output comparator built in. The
output signal can be processed directly by an
additional digital circuitry to extract the data from the
received signal. The control for AGC (automatic gain
control) can be used to switch AGC on or off if
necessary. MAS9081 supports dual band operation
by switching between two crystal filters and an
additional antenna tuning capacitor.
MAS9081 has differential input and different internal
compensation capacitor options for compensating
shunt capacitances of different crystals (See ordering
information on page 12).
FEATURES
Dual Band Receiver IC
Highly Sensitive AM Receiver, 0.4 µVRMS typ.
Wide Supply Voltage Range from 1.1 V to 5 V
Very Low Power Consumption
Power Down Control
Fast Startup
Only a Few External Components Necessary
Control for AGC On
Wide Frequency Range from 40 kHz to 100 kHz
High Selectivity by Quartz Crystal Filter
APPLICATIONS
Dual Band Time Signal Receiver WWVB (USA),
JJY (Japan), DCF77 (Germany), MSF (UK), HGB
(Switzerland) and BPC (China)
BLOCK DIAGRAM
RFIP
RFIM
QO2 QO1 QI
AGC Amplifier
AON
Demodulator
&
OUT
Comparator
RFI2
Power Supply/Biasing
VDD VSS PDN1 PDN2 AGC
DEC
1 (12)



Micro Analog Systems
Micro Analog Systems

MAS9081 Datasheet Preview

MAS9081 Datasheet

Stand-alone Dual Band Time Signal AM Receiver IC

No Preview Available !

MAS9081 pdf
www.DataSheet4U.com
MAS9081 PAD LAYOUT
9081Ax,
x=1, 3, 4 or 5
DA9081.006
1 August, 2005
VDD
QO2
QO1
QI
AGC
PDN2
OUT
VSS
RFI2
RFIM
RFIP
PDN1
AON
DEC
1494 µm
DIE size = 1.49 x 1.69 mm; PAD size = 80 x 80 µm
Note: Because the substrate of the die is internally connected to VDD, the die has to be connected to VDD or
left floating. Please make sure that VDD is the first pad to be bonded. Pick-and-place and all component
assembly are recommended to be performed in ESD protected area.
Note: Coordinates are pad center points where origin has been located in bottom-left corner of the silicon die.
Pad Identification
Power Supply Voltage
Quartz Filter Output for Crystal 2
Quartz Filter Output for Crystal 1
Quartz Filter Input for Crystals
AGC Capacitor
Power Down/Frequency Selection Input 2
Receiver Output
Demodulator Capacitor
AGC On Control
Power Down/Frequency Selection Input 1
Positive Receiver Input
Negative Receiver Input
Receiver Input 2 (for Antenna Capacitor 2)
Power Supply Ground
Name
VDD
QO2
QO1
QI
AGC
PDN2
OUT
DEC
AON
PDN1
RFIP
RFIM
RFI2
VSS
X-coordinate
174 µm
174 µm
174 µm
174 µm
174 µm
174 µm
175 µm
1318 µm
1318 µm
1318 µm
1318 µm
1318 µm
1318 µm
1318 µm
Y-coordinate
1452 µm
1247 µm
1043 µm
839 µm
633 µm
430 µm
224 µm
240 µm
444 µm
648 µm
853 µm
1057 µm
1262 µm
1466 µm
Note
3
1
2
3
4
4
Notes:
1) OUT = VSS when carrier amplitude at maximum; OUT = VDD when carrier amplitude is reduced
(modulated)
- the output is a current source/sink with |IOUT| > 5 µA
- at power down the output is pulled to VSS (pull down switch)
2) AON = VSS means AGC off (hold current gain level); AON = VDD means AGC on (working)
- Internal pull-up with current < 1 µA which is switched off at power down
3) PDN1 = VDD and PDN2 = VDD means receiver off
- Fast start-up is triggered when the receiver is after power down controlled to power up
4) Receiver inputs RFIP and RFIM have both 600 kbiasing resistances against ground
2 (12)


Part Number MAS9081
Description Stand-alone Dual Band Time Signal AM Receiver IC
Maker Micro Analog Systems
Total Page 12 Pages
PDF Download
MAS9081 pdf
Download PDF File
[partsNo] view html
View PDF for Mobile






Related Datasheet

1 MAS9081 Stand-alone Dual Band Time Signal AM Receiver IC Micro Analog Systems
Micro Analog Systems
MAS9081 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