Order this document by MC13175/D
The MC13175 and MC13176 are one chip FM/AM transmitter
subsystems designed for AM/FM communication systems. They include a
Colpitts crystal reference oscillator, UHF oscillator, ÷ 8 (MC13175) or ÷ 32
(MC13176) prescaler and phase detector forming a versatile PLL system.
Targeted applications are in the 260 to 470 MHz band and 902 to 928 MHz
band covered by FCC Title 47; Part 15. Other applications include local
oscillator sources in UHF and 900 MHz receivers, UHF and 900 MHz video
transmitters, RF Local Area Networks (LANs), and high frequency clock
drivers. The MC13175/76 offer the following features:
UHF FM/AM
TRANSMITTER
SEMICONDUCTOR
TECHNICAL DATA
• UHF Current Controlled Oscillator
• Uses Easily Available 3rd Overtone or Fundamental Crystals for
Reference
• Fewer External Parts Required
• Low Operating Supply Voltage (1.8 to 5.0 Vdc)
• Low Supply Drain Currents
• Power Output Adjustable (Up to +10 dBm)
• Differential Output for Loop Antenna or Balun Transformer Networks
• Power Down Feature
16
1
• ASK Modulated by Switching Output On and Off
D SUFFIX
PLASTIC PACKAGE
CASE 751B
• (MC13175) f = 8 x f ; (MC13176) f = 32 x f
o
ref ref
o
(SO–16)
Figure 1. Typical Application as 320 MHz AM Transmitter
AM Modulator
1.3k
0.01
Osc
Tank
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PIN CONNECTIONS
S
2
µ
Coilcraft
150–05J08
V
EE
(1)
Z = 50
I
Osc 1
NC
1
2
3
4
5
6
7
8
16
15
14
150p
mod
0.165
µ
RF
SMA
Ω
out
Out
Gnd
f/N
RFC
1
(2)
Out 2
NC
V
S
V
CC
1
EE
0.1
µ
Osc 4
13 Out 1
150p
27k
1.0k
V
12
11
10
9
V
CC
V
EE
EE
0.1µ
I
Enable
Cont
Reg.
Gnd
PD
out
Xtalb
Xtale
100p
(MC13176)
0.01
µ
30p
(MC13175)
MC13175–30p
MC13176–180p
MC13176
Crystal
V
0.82
µ
CC
(3)
MC13175
Crystal
3rd Overtone
40.0000 MHz
Fundamental
10 MHz
V
1.0k
CC
ORDERING INFORMATION
Operating
NOTES: 1. 50 Ω coaxial balun, 1/10 wavelength at 320 MHz equals 1.5 inches.
2. Pins 5, 10 & 15 are ground and connected to V which is the component/DC ground plane
EE
2. side of PCB. These pins must be decoupled to V ; decoupling capacitors should be placed
CC
2. as close as possible to the pins.
3. The crystal oscillator circuit may be adjusted for frequency with the variable inductor
3. (MC13175); recommended source is Coilcraft “slot seven” 7mm tuneable inductor, Part
3. #7M3–821. 1.0k resistor. Shunting the crystal prevents it from oscillating in the fundamental
3. mode.
Temperature Range
Device
Package
MC13175D
MC13176D
SO–16
SO–16
T
A
= – 40° to +85°C
Motorola, Inc. 1998
Rev 1.1
1
MOTOROLA RF/IF DEVICE DATA