MAS9081 Micro Analog Systems, MAS9081 Datasheet - Page 8

• Manufacturer Part Number: MAS9081
• Description: Stand-alone Dual Band Time Signal AM Receiver IC
• Manufacturer: Micro Analog Systems

PIN CONFIGURATION & TOP MARKING FOR PLASTIC TSSOP-16 PACKAGE
PIN DESCRIPTION
A = Analog, D = Digital, P = Power, G = Ground, I = Input, O = Output, NC = Not Connected
Notes:
1) Pin 4 between quartz crystal filter pins must be connected to VSS to eliminate package leadframe parasitic
2) OUT = VSS when carrier amplitude at maximum; OUT = VDD when carrier amplitude is reduced
3) AON = VSS means AGC off (hold current gain level); AON = VDD means AGC on (working)
4) Differential input versions A1..A5 have 600 kΩ biasing MOSFET-transistors towards ground from both
capacitances disturbing the crystal filter performance. All other NC (Not Connected) pins are also
recommended to be connected to VSS to minimize noise coupling.
(modulated)
-
-
-
receiver inputs RFIP and RFIM. Asymmetric input versions AB..AF have input pin RFIM unconnected.
Pin Name
PDN2
PDN1
RFIM
RFIP
AGC
OUT
AON
RFI2
VDD
QO2
QO1
DEC
the output is a current source/sink with |I
at power down the output is pulled to VSS (pull down switch)
Internal pull-up (to AGC on) with current < 1 µA which is switched off at power down
VSS
NC
NC
QI
PDN2
AGC
VDD
QO2
QO1
OUT
NC
QI
Pin
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Type
AO
AO
AO
DO
AO
DI
DI
DI
AI
AI
AI
AI
G
P
OUT
Positive Power Supply
Quartz Filter Output for Crystal 2
Quartz Filter Output for Crystal 1
Quartz Filter Input for Crystal and External
Compensation Capacitor
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
| > 5 µA
NC
RFIM
RFIP
PDN1
DEC
RFI2
AON
VSS
Function
Top Marking Definitions:
z = Version Number
YYWW = Year Week
1 August, 2005
DA9081.006
Note
1
2
3
4
4
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