ML13135
FM Communications
Receiver; Dual Conversion
Narrowband FM Receiver
Legacy Device: Motorola MC13135
The ML13135 is the second generation of single chip, dual conversion
FM communications receivers developed by Motorola. Major
improvements in signal handling, RSSI and first oscillator operation
have been made. In addition, recovered audio distortion and audio
drive have improved. These receivers offer low noise, high gain and
stability over a wide operating voltage range, and Lansdale is pleased
to continue to offer them.
P DIP 24 = LP
PLASTIC PACKAGE
CASE 724
24
1
The ML13135 includes a Colpitts oscillator, VCO tuning diode, low
noise first and second mixer and LO, high gain limiting IF, and RSSI.
The ML13135 is designed for use with an LC quadrature detector and
has an uncommitted op amp that can be used either for an RSSI buffer
or as a data comparator.
SO 24 = -6P
24
CASE 751E
(SO–24L)
1
CROSS REFERENCE/ORDERING INFORMATION
This device can be used as a stand–alone VHF receiver or as the
lower IF of a triple conversion system. Applications include cordless
telephones, short range data links, walkie–talkies, low cost land
mobile, amateur radio receivers, baby monitors and scanners.
PACKAGE
MOTOROLA
LANSDALE
P DIP 24
SO 24
MC13135P
MC13135DW
ML13135LP
ML13135-6P
Note: Lansdale lead free (Pb) product, as it
becomes available, will be identified by a part
number prefix change from ML to MLE.
OPERATING FEATURES
• Complete Dual Conversion FM Receiver – Antenna to Audio Output
• Input Frequency Range – 200 MHz
PIN CONNECTIONS
• Voltage Buffered RSSI with 70 dB of Usable Range
• Low Voltage Operation – 2.0 to 6.0 Vdc (2 Cell NiCad Supply)
• Low Current Drain – 3.5 mA Typ
• Low Impedance Audio Output < 25 Ω
• VHF Colpitts First LO for Crystal or VCO Operation
• Isolated Tuning Diode
1st LO
Varicap
1
2
3
24
1st LO Base
1st LO Emitter
1st LO Out
Varicap C
23
22
21
Varicap A
1st Mixer In 1
1st Mixer In 2
1st Mixer Out
V
1
CC
• Buffered First LO Output to Drive CMOS PLL Synthesizer
V
1
4
5
CC
• Operating Temperature Range T = –40° to +85°C
A
20
19
2nd LO Emitter
2nd LO
V
2
CC
V
2
6
7
8
9
CC
2nd LO Base
2nd Mixer Out
18
17
16
2nd Mixer In
Audio Out
AF
V
EE
Op Amp Out
Limiter In
Demod
10
15
14
Limiter
Decouple 1
Op Amp In –
Op Amp In +
11
12
Decouple 2
RSSI
13
Quad Coil
The device contains 142 active transistors.
Page 1 of 11
www.lansdale.com
Issue 0