8 (12)

DA9081.006

1 August, 2005

PIN CONFIGURATION & TOP MARKING FOR PLASTIC TSSOP-16 PACKAGE

QO2

VDD

QO1

NC

QI

AGC

PDN2

OUT

RFIM

VSS

RFI2

RFIP

NC

PDN1

AON

DEC

Top Marking Definitions:

z = Version Number

YYWW = Year Week

PIN DESCRIPTION

Pin Name

Pin

Type

Function

Note

VDD

1

P

Positive Power Supply

QO2

2

AO

Quartz Filter Output for Crystal 2

QO1

3

AO

Quartz Filter Output for Crystal 1

NC

4

1

QI

5

AI

Quartz Filter Input for Crystal and External

Compensation Capacitor

AGC

6

AO

AGC Capacitor

PDN2

7

DI

Power Down/Frequency Selection Input 2

OUT

8

DO

Receiver Output

2

DEC

9

AO

Demodulator Capacitor

AON

10

DI

AGC On Control

3

PDN1

11

DI

Power Down/Frequency Selection Input 1

NC

12

RFIP

13

AI

Positive Receiver Input

4

RFIM

14

AI

Negative Receiver Input

4

RFI2

15

AI

Receiver Input 2 (for Antenna Capacitor 2)

VSS

16

G

Power Supply Ground

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

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) 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)

3) AON = VSS means AGC off (hold current gain level); AON = VDD means AGC on (working)

-

Internal pull-up (to AGC on) with current < 1 µA which is switched off at power down

4) Differential input versions A1..A5 have 600 kΩ biasing MOSFET-transistors towards ground from both

receiver inputs RFIP and RFIM. Asymmetric input versions AB..AF have input pin RFIM unconnected.