U2741B-MFB Atmel, U2741B-MFB Datasheet - Page 2

• Manufacturer Part Number: U2741B-MFB
• Manufacturer: Atmel

Specifications of U2741B-MFB

• Operating Frequency (max): 450000kHz
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / Rohs Status: Not Compliant

Pin Description
Block Diagram
U2741B
2 (7)
LFGND
LFVCC
VCC
GND
FSK
CLK
ASK
LF
1
3
5
8
2
4
6
7
Figure 2. Pinning SSO16
U2741B
LFGND
LFVCC
GND
VCC
ASK
CLK
FSK
LF
16
15
14
13
12
11
10
9
Power
DIVIC
PWRSET
PWRVCC
ANT
PWRGND1
PWRGND2
XTO1
XTO2
U2741B
OR
up
Figure 3. Block diagram
VCO
f
f
64
n
Pin
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
XTO
PA
PWRGND2 Power GND2
PWRGND1 Power GND1
PWRVCC
PWRSET
LFGND
LFVCC
Symbol
DIVIC
XTO2
XTO1
GND
VCC
CLK
ANT
ASK
FSK
LF
DIVC
PWRSET
PWRVCC
ANT
PWRGND1
PWRGND2
XTO1
XTO2
Modulation input ASK
Modulation input FSK
Supply voltage
Clock output
Ground
Supply voltage VCO
VCO ground
Circuit PLL loop
FM modulation output
Connection for crystal
RF output
Supply voltage power
amplifier
Applied to VCC
Pitch factor setting for crystal
L: high crystal frequency;
H: low crystal frequency
Function
Rev. A2, 22-Dec-00