U4255BM-MFN Atmel, U4255BM-MFN Datasheet - Page 2

• Manufacturer Part Number: U4255BM-MFN
• Description: IC RCVR AM/FM FRONT-END 44-SSOP
• Manufacturer: Atmel

Specifications of U4255BM-MFN

• Frequency: 70MHz ~ 160MHz
• Modulation Or Protocol: AM, FM
• Applications: AM/FM Radio Receiver
• Current - Receiving: 50mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 7.5 V ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -

Pin Description
2
Pin
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
11
1
2
3
4
5
6
7
8
9
U4255BM-M
GNDOSC
AMVREG
OSCOUT
MX1FMA
MX1FMB
MX1AMB
MX1AMA
AMPLPF
GNDMX
IFAGCH
Symbol
FMAGC
AMAGC
MULTIP
METER
IF2OUT
MX2OB
MX2OA
IF1OUT
SMUTE
IFAGCL
IF1REF
MX1OA
MX1OB
MX2LO
FILADJ
ADJAC
OPLPF
IF1AMI
IF1FMI
MX2IN
OSCB
OSCE
DATA
IF2IN
MPX
GND
DEV
CLK
V3P
V57
INT
EN
VS
V3
Function
1
1
1
FM preamplifier AGC
AM control voltage
AM preamplifier AGC
AM AGC LP filter
Adjacent channel detection output
Multiplex signal
5.7 V reference voltage
Oscillator basis
Oscillator emitter
Oscillator ground
Oscillator output
3-wire bus enable
3-wire bus clock
3-wire bus data
2
Interrupt, stop signal
10.25 MHz input for 2
2
2
Ground
2
3 V reference for AMPIN, AMIFAGC, Control, IF2IN
2
3 V reference for IF1OUT, MX2IN
1
Deviation detect output, test output
Operating point LPF
1
Soft MUTE control input
IF AGC LP filter high time
Filter adjust
1
1
Multipath detection output
1
Supply voltage
1
1
Ground 1
Field strength output
IF AGC LP filter low time constant
st
st
st
nd
nd
nd
nd
nd
st
st
st
st
st
st
st
mixer FM input A
mixer FM input B
mixer AM input B
IF amplifier output
IF AM amplifier input
IF FM amplifier input
IF & MX1OUT reference, MX1AM A, MX1AM B
mixer AM input A
mixer output A
mixer output B
mixer input
IF amplifier output
mixer output B
mixer output A
IF amplifier input
st
mixer, preamplifier AGC
nd
mixer
4519A–AUDR–03/02