10 (15)

DA6181B.002

5 May, 2011

MAS6181 SAMPLES IN PDIP-20 PACKAGE

1

VDD 2

QO2 3

QO1 4

5

6

QI

7

AGC 8

PDN2 9

OUT 10

20 VSS

19 RFI2

18 RFIM

17 RFIP

16

15

14 PDN1

13 AON

12 DEC

11

Top Marking Definitions:

YYWW = Year Week

XXXXX.X = Lot Number

ZZ = Sample Version

PIN DESCRIPTION

Pin Name

Pin

Type

Function

Note

1

NC

VDD

2

P

Positive Power Supply

QO2

3

AO

Quartz Filter Output for Crystal 2

QO1

4

AO

Quartz Filter Output for Crystal 1

5

NC

1

6

NC

1

QI

7

AI

Quartz Filter Input for Crystal

AGC

8

AO

AGC Capacitor

PDN2

9

DI

Power Down/Frequency Selection Input 2

2

OUT

10

DO

Receiver Output

3

11

NC

DEC

12

AO

Demodulator Capacitor

AON

13

DI

AGC On Control

4

PDN1

14

DI

Power Down/Frequency Selection Input 1

2

15

NC

16

NC

RFIP

17

AI

Positive Receiver Input

5

RFIM

18

AI

Negative Receiver Input

5

RFI2

19

AI

Receiver Input 2 (for Antenna Capacitor 2)

VSS

20

G

Power Supply Ground

A = Analog, D = Digital, P = Power, G = Ground, I = Input, O = Output, NC = Not Connected

Notes:

1) Pins 5 and 6 between QO1 and QI must be connected to VSS to eliminate DIL package lead frame parasitic

capacitances disturbing the crystal filter performance. All other NC (Not Connected) pins are also

recommended to be connected to VSS to minimize noise coupling.

2) PDN1 = VDD and PDN2 = VDD means receiver off

-

Fast start-up is triggered when the receiver is after power down controlled to power on

3) OUT = VSS when carrier amplitude at maximum; OUT = VDD when carrier amplitude is reduced

(modulated)

-

-

At power down the output is pulled to VSS (pull down switch)

4) AON = VSS means AGC off (hold current gain level); AON = VDD means AGC on (normal operation)

-

Unused AON pad can be left unconnected due to internal pull-up with current < 1 µA. Pull up current is

switched off at power down.

5) Receiver inputs RFIP and RFIM have both 1.4 MΩ biasing resistors towards VDD