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Maxim Integrated - Upstream CATV Driver Amplifier

Numéro de référence MAX3532
Description Upstream CATV Driver Amplifier
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX3532 fiche technique
19-1331; Rev 1; 6/98
EVAALVUAAILTAIOBNLEKIT
Upstream CATV Driver Amplifier
________________General Description
The MAX3532 is a programmable power amplifier for
use in upstream cable applications. The device outputs
up to 62dBmV (continuous wave) through a 1:2 (voltage
ratio) transformer when driven with 36dBmV at its input.
It features variable gain, which is controlled via a 3-wire
digital serial bus and available in 1dB steps. The operat-
ing frequency ranges from 5MHz to 42MHz.
The MAX3532 offers three operating modes: high power,
low noise, and transmit disable. High-power mode
achieves the highest output levels, while low-noise mode
achieves the lowest output noise when driving lower out-
put levels. Transmit disable mode places the device in a
high-isolation state with minimum output noise, for use
between bursts in TDMA systems.
Two power-down modes are also available. Software shut-
down mode permits power-down of all analog circuitry while
maintaining the programmed gain setting. Shutdown mode
disables all circuitry and reduces current consumption
below 10µA.
The MAX3532 comes in a 36-pin SSOP package screened
for the extended-industrial temperature range (-40°C to
+85°C).
________________________Applications
Cable Modems
CATV Set-Top Box
Telephony over Cable
__________Typical Operating Circuit
36
SHDN
CONTROL
LOGIC
35
1–10, 12, 13, 15–17,
21–25, 32
TXEN
GND
VOUT- 34 8.01:2 OUTPUT
VOUT+ 33 8.0
MAX3532 VEE2 31
INPUT
0.001µF
28
27
VIN+
VIN-
0.001µF
VCC
0.1µF
14 VCC1
11 VEE1
VCC2
VCC
30
29
VEE
SCLK
SDA
CS
26
20
19
18
0.1µF
0.1µF
VCC
VCC
CONTROL
LOGIC
____________________________Features
o Single +5V Supply
o Output Level Ranges from Less than 8dBmV
to 62dBmV, in 1dB Steps
o Gain Programmable in 1dB Steps
o 350mW Typical Power Dissipation
o Transmit-Disable Mode
o Two Shutdown Modes
_______________Ordering Information
PART
MAX3532EAX
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
36 SSOP
___________________Pin Configuration
TOP VIEW
GND 1
GND 2
GND 3
GND 4
GND 5
GND 6
GND 7
GND 8
GND 9
GND 10
VEE1 11
GND 12
GND 13
VCC1 14
GND 15
GND 16
GND 17
CS 18
MAX3532
SSOP
36 SHDN
35 TXEN
34 VOUT-
33 VOUT+
32 GND
31 VEE2
30 VCC2
29 VCC
28 VIN+
27 VIN-
26 VEE
25 GND
24 GND
23 GND
22 GND
21 GND
20 SCLK
19 SDA
Protected under U.S. Patent 5,748,027
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.

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