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參數(shù)資料
| 型號： | TX4915 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | TX4915 VHF/UHF TRANSMITTER |
| 中文描述： | TX4915甚高頻/超高頻發(fā)射器 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 234K |
| 代理商： | TX4915 |
Page 1
March 2000
Description
The TX4915 is a monolithic integrated circuit intended for use as a low-cost AM/ASK
transmitter. The chip can be used in applications in the north American and European
VHF/UHF bands. The integrated VCO, phase detector, prescaler, and reference oscillator
transistor require only the addition of an external crystal to provide a complete phase-
locked loop. In addition to the standard power-down mode, the chip also includes an auto-
matic lock-detect feature that disables the transmitter output when the PLL is out-of-lock.
Features
Fully Integrated Frequency Synthesizer
2.2V to 5.5V Voltage Supply Range
Low Current and Power Down Capability
Integrated VCO and Reference Oscillator
integeated 64/128 Dual Modulus Prescaler
100MHz to 960MHz frequency Range
Out-of-Lock inhibit Circuit
Package and Pin Assignment
16 pin, plastic SSOP (dimensions in mm)
OSCIN
OSCOUT
TXEN
VSS
PAOUT
VSS1
VCC1
MODIN
SW
LD
DO
RES
RESB
VREFP
VSS2
VCC2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
T
X
9
1
5
H
iM
A
R
K
0.25
1.45
0.10
A1
A2
0.40
3.80
0°
5.80
4.80
0.19
0.20
y
θ
D
E
e
L
E1
b
C
0.10
8°
0.64
0.25
5.00
6.20
1.27
4.00
0.30
0.25
DIMENSIONS IN MILLIMETERS
MIN
1.60
1.35
SYMBOLS
A
NOM
MAX
1.75
NOTE
1. PACKAGE BODY SIZES EXCLUDE MOLD FLASH AND
GATE BURRS
2. DIMENSION L IS MEASURED IN GAGE PLANE
3. TOLERANCE 0.10 mm UNLESS OTHERWISE SPECIFIED
4. CONTROLLING DIMENSION IS MILLIMETER. CONVERTED
INCH DIMENSIONS ARE NOT NECESSARILY EXACT.
5. FOLLOWED FORM JEDEC MO-137
θ
0.010
0.057
0.004
0.016
0.150
0°
0.228
0.189
0.007
0.008
0.004
8°
0.025
0.010
0.197
0.244
0.050
0.157
0.012
0.010
DIMENSIONS IN INCHES
MIN
NOM
0.053
0.064
MAX
0.069
the wireless IC company
TX4915 VHF/UHF TRANSMITTER
HiMARK Technology, Inc. reserves the right to change the product described in this datasheet. All information con-
tained in this datasheet is subject to change without prior notice. HiMARK Technology, Inc. assumes no responsibility
for the use of any circuits shown in this datasheet.
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