U4311B-FS View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

U4311B-FS

Low-Current Superhet Remote Control Receiver

Atmel Corporation 

U4311B-FS

Pin Description

OPin+ 1

OPout 2

RCwake 3

n.c. 4

GND2 5

Compout 6

RC– 7

n.c. 8

RC+ 9

n.c. 10

20 OPin–

19 VS

18 FMout

17 VRef

16 Discr

15 GND1

14 n.c.

13 SWout

12 IFin

11 AMout

12649

Figure 2. Pinning

Pin Symbol

Function

1

OPin+ OP amplifier non-inverted input

2

OPout OP amplifier output

3

RCwake RC wake–up reset time

4

n.c. Not connected

5

GND2 Ground of the logical circuits

6 Compout Comparator output

7

RC– Comparator time constant

8

n.c. Not connected

9

RC+ Comparator time constant

10

n.c. Not connected

11

AMout AM current output

12

IFin IF input

13

SWout Wake-up output

14

n.c. Not connected

15 GND1 Ground of the analog circuits

16

Discr FM discriminator tank

17

VRef Reference voltage

18

FMout FM discriminator output

19

VS Supply voltage

20

OPin– OP amplifier inverted input

Internal connections see figures 4 to 19

Absolute Maximum Ratings

Parameters

Supply voltage

Power dissipation Tamb = 85°C

Junction temperature

Storage temperature

Ambient temperature for SSO20

Thermal Resistance

Junction ambient

Parameters

SSO20

Symbol

Value

Unit

VS

13

V

Ptot

400

mW

Tj

125

°C

Tstg

–55 to +125

°C

Tamb

–40 to +105

°C

Symbol

RthJA

Value

140

Unit

K/W

2 (13)

Rev. A3, 28-Sep-00

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