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Maxim Integrated Semiconductor Electronic Components Datasheet


MAX-3510EEP

Upstream CATV Amplifier


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MAX-3510EEP pdf
19-1398; Rev 2; 8/99
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Upstream CATV Amplifier
General Description
The MAX3510 is a programmable power amplifier for
use in CATV upstream applications. The device outputs
up to 64dBmV (continuous wave) through a 2:1 (voltage
ratio) transformer. It features variable gain controlled by
a 3-wire digital serial bus. Gain control is available in
1dB steps. The device operates over a frequency
range of 5MHz to 65MHz.
The MAX3510 offers a transmit-disable mode, which
places the device in a high-isolation state for use
between bursts in TDMA systems. In this mode the out-
put stage is shut off, minimizing output noise. When
entering and leaving transmit-disable mode, transients
are kept to 7mV nominal at full gain. In addition, supply
current is reduced to 25mA.
Two power-down modes are available. Software-shutdown
mode permits power-down of all analog circuitry while
maintaining the programmed gain setting. Shutdown
mode disables all circuitry and reduces current consump-
tion to less than 10µA.
The MAX3510 is available in a 20-pin QSOP package
for the extended-industrial temperature range (-40°C to
+85°C).
Applications
Cable Modems
Telephony over Cable
CATV Set-Top Box
CATV Status Monitor
Features
o Ultra-Low Power-Up/Down Transients,
7mV Typical at 59dBmV Output
o Single +5V Supply
o Output Level Ranges from <8dBmV to 64dBmV
o Gain Programmable in 1dB Steps
o Low Transmit Output Noise Floor: -47dBmV
(160kHz BW)
o Low Transmit-Disable Output Noise: -70dBmV
o Two Power-Down Modes
PART
MAX3510EEP
Ordering Information
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
20 QSOP
Pin Configuration appears at end of data sheet.
Typical Operating Circuit
CONTROL
LOGIC
12
SHDN
18
TXEN
0.001µF
+
5
VIN+
ANTI-ALIAS
INPUT
FILTER
+5V
0.1µF
6
VIN-
0.001µF 2 VCC1
4 GND1
3 GND
7 GND
1 GND
MAX3510
GND2
VCC2
CEXT1
VOUT+
20
19 0.1µF
+5V
17
0.0033µF
16
2:1
15
VOUT-
CEXT2
N.C.
GND
SCLK
SDA
CS
14
13
11
10
9
8
+5V
0.1µF
0.1µF
CONTROL
LOGIC
OUTPUT
________________________________________________________________ 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 1-800-835-8769.



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MAX-3510EEP pdf
Upstream CATV Amplifier
ABSOLUTE MAXIMUM RATINGS
VCC (VCC1, VCC2), VOUT+, VOUT- ................... -0.5V to +10.0V
Continuous Power Dissipation (TA = +70°C)
Input Voltage Levels (all inputs),
20-Pin QSOP (derate at 12.3mW/°C above +70°C)....1067mW
CEXT1, CEXT2.........................................-0.3V to (VCC + 0.3V)
Operating Temperature Range ...........................-40°C to +85°C
Continuous Input Voltage (VIN+, VIN-)...............................2Vp-p
Junction Temperature ......................................................+150°C
Continuous Current (VOUT+, VOUT-).................................80mA
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(VCC = +4.75V to +5.25V, TXEN = SHDN = high, D7 = 1, TA = -40°C to +85°C, unless otherwise noted. No input signal applied.
Typical parameters are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Supply Voltage
VCC
Supply Current Transmit Mode
ICC
Supply Current Transmit-Disable
Mode
ICC
TXEN = low
4.75 5.25 V
109 126 mA
26 30 mA
Supply Current Software-
Shutdown Mode
Supply Current Shutdown Mode
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
ICC
ICC
VINH
VINL
IBIASH
IBIASL
TXEN = low, D7 = 0
SHDN = low, TXEN = low
1.4 2.0 mA
1 10 µA
2.0 V
0.8 V
100 µA
-100
µA
AC ELECTRICAL CHARACTERISTICS
(VCC = +4.75V to +5.25V, TXEN = SHDN = high, D7 = 1, VIN = 34dBmV differential, output impedance = 75through a 2:1 trans-
former, TA = -40°C to +85°C, unless otherwise noted. Typical parameters are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Gain control word = 1,
TA = -40°C to +85°C
-26
Voltage Gain
fIN = 5MHz
to 42MHz
AV
Gain control word = 63,
TA = 0°C to +85°C
Gain control word = 63,
TA = -40°C to 0°C
27
26
dB
Bandwidth
Gain Rolloff
1dB Compression Point
Output Step Size
fIN = 10MHz
Gain control word = 50,
TA = -40°C to +85°C
16.7
20.4
f3dB
P1dB
VOUT = 60dBmV, -3dB (Note 1)
VOUT = 60dBmV, fIN = 42MHz (Notes 1, 2)
VOUT = 60dBmV, fIN = 65MHz (Notes 1, 2)
AV = 26dB, 42MHz (Note 1)
84 100
-0.9
-1.6
18.0 20.0
MHz
-1
dB
-1.8
dBm
fIN = 5MHz to 42MHz
AV = -26dB to +27dB,
TA = -40°C to +85°C
AV = -26dB to +26dB,
TA = -40°C to 0°C
0.7
0.65
1
1
1.3
dB
1.3
2 _______________________________________________________________________________________



Part Number MAX-3510EEP
Description Upstream CATV Amplifier
Maker Maxim - Maxim
Total Page 12 Pages
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