MAX14538E Datasheet PDF - Maxim Integrated Products
| Part Number | MAX14538E | |
| Description | (MAX14535E - MAX14539E) DOCSIS 3.0 Upstream Amplifier | |
| Manufacturers | Maxim Integrated Products | |
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19-4461; Rev 0; 2/09
www.DataSheet4U.com
Low-Resistance DPDT Switches
with Negative Rail
General Description
The MAX14535E–MAX14539E are low on-resistance
and high ESD-protected DPDT switches multiplex ana-
log signals, such as AC-coupled audio or video. These
devices combine the low on-capacitance (CON) and
low on-resistance (RON) necessary for high-perfor-
mance switching applications in portable electronics,
and include an internal negative supply to pass audio
signals that swing below ground (down to -1.5V).
The MAX14535E/MAX14537E/MAX14539E feature inter-
nal shunt resistors on the normally open path (and nor-
mally closed path, (MAX14539E)) to reduce clicks and
pops heard at the output. The MAX14535E–
MAX14539E have an enable input (EN) to reduce sup-
ply current and set all channels to high-impedance
when driven low. When EN is driven low, the
MAX14537E/MAX14538E have the lowest possible cur-
rent consumption, but cannot withstand negative rail
signals. The MAX14535E/MAX14536E/MAX14539E can
still withstand a negative signal to NC_, NO_, or COM_
from -1.5V to min (VCC, 3V.)
The MAX14535E–MAX14539E operate from a +2.4V to
+5.5V supply. These devices can be powered from the
typical analog supply voltage in a cell phone (+2.5V to
+2.8V) or a lithium-ion (Li+) battery (about 4.3V max).
The MAX14535E–MAX14539E have high ESD protec-
tion, up to ±15kV on COM_, and the NC_, NO_, and
COM_ voltage can go up to 3.6V when VCC = 0V with-
out damaging the devices.
All devices are offered in a space-saving 10-pin,
1.4mm x 1.8mm UTQFN package, and operate over the
-40°C to +85°C extended temperature range.
Features
♦ Low 0.135Ω (typ) On-Resistance
♦ Low 0.3mΩ (typ) RON Flatness
♦ Single +2.4V to +5.5V Supply Voltage
♦ Pass Audio Signal Between -1.5V and min (VCC,
3V)
♦ Internal Shunt Resistors for Click-and-Pop
Reduction (MAX14535E/MAX14537E/MAX14539E)
♦ Withstand 3.6V (max) Applied to NC_, NO_, and
COM_ when VCC = 0V
♦ High ESD Protection: Up to ±15kV on COM_
♦ 10-Pin UTQFN (1.4mm x 1.8mm) Package
♦ -40°C to +85°C Operating Temperature Range
Applications
Cell Phones
MP3 Players
Notebook Computers
PDAs
Ordering Information/Selector Guide
PART
PIN-PACKAGE TOP MARK
SHUNT RESISTORS
MAX14535EEVB+
10 UTQFN
AAS
NO1, NO2 Terminals
MAX14536EEVB+*
10 UTQFN
AAT
⎯
MAX14537EEVB+*
10 UTQFN
AAU
NO1, NO2 Terminals
MAX14538EEVB+*
10 UTQFN
AAV
⎯
MAX14539EEVB+*
10 UTQFN
AAW
NO_ and NC_ Terminals
Note: All devices are specified over the -40°C to +85°C temperature range.
+Denotes a lead(Pb)-free package/RoHS-compliant package.
*Future product—contact factory for availability.
SHUTDOWN MODE
(EN = LOW)
SIGNAL RANGE
-1.5V to min (VCC, 3V)
-1.5V to min (VCC, 3V)
0V to VCC
0V to VCC
-1.5V to min (VCC, 3V)
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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Low-Resistance DPDT Switches
with Negative Rail
Applications Information
Extended ESD Protection
ESD protection structures are incorporated on all pins
to protect against electrostatic discharges up to ±2kV
(HBM) encountered during handling and assembly.
COM1 and COM2 are further protected against ESD
up to ±15kV (HBM) without damage. The ESD struc-
tures withstand high ESD both in normal operation and
when the device is powered down. After an ESD event,
the MAX14535E−MAX14539E continue to function with-
out latchup.
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test setup, test methodology, and test results.
Human Body Model
Figure 3a shows the Human Body Model. Figure 3b shows
the current waveform it generates when discharged into
a low impedance. This model consists of a 100pF capaci-
tor charged to the ESD voltage of interest that is then
discharged into the device through a 1.5kΩ resistor.
IEC 61000-4-2
The main difference between tests done using the
Human Body Model and IEC 61000-4-2 is higher peak
current in the IEC 61000-4-2. Because series resistance
is lower in the IEC-61000-4-2 ESD test model (Figure
3c,) the ESD withstand voltage measured using the
Human Body Model. Figure 3d shows the current wave-
form for the ±8kV IEC 61000-4-2 Level 4 ESD Contact
Discharge test.
The Air-Gap Discharge test involves approaching the
device with a charged probe. The Contact Discharge
method connects the probe to the device before the
probe is energized.
RC
1MΩ
RD
1.5kΩ
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
Cs
100pF
STORAGE
CAPACITOR
Figure 3a. Human Body ESD Test Model
DEVICE
UNDER
TEST
IP 100%
90%
AMPERES
36.8%
10%
0
0
tRL
Ir PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
TIME
tDL
CURRENT WAVEFORM
Figure 3b. Human Body Current Waveform
RC
50MΩ to 100MΩ
RD
330Ω
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
Cs
150pF
STORAGE
CAPACITOR
Figure 3c. IEC 61000-4-2 ESD Test Model
DEVICE
UNDER
TEST
I
100%
90%
10%
tR = 0.7ns to 1ns
30ns
60ns
t
Figure 3d. IEC 61000-4-2 ESD Generator Current Waveform
_______________________________________________________________________________________ 5
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| Information | Total 9 Pages | |
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| Download | [ MAX14538E.PDF Datasheet ] | |
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