MAX4855ETE+ Maxim Integrated Products, MAX4855ETE+ Datasheet - Page 6

• Manufacturer Part Number: MAX4855ETE+
• Description: IC MULTIPLEXER DUAL SPDT 16TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX4855ETE+

• Function: Multiplexer
• Circuit: 2 x SPDT
• On-state Resistance: 7.5 Ohm
• Voltage Supply Source: Single Supply
• Voltage - Supply, Single/dual (±): 2 V ~ 5.5 V
• Current - Supply: 1µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX4855 dual SPDT, low on-resistance, low-voltage,
analog switch operates from a +2V to +5.5V supply and
can handle signals up to the power rails. In addition, the
MAX4855 integrates two internal comparators that can
be used for headphone or mute detection. The compara-
tor threshold is internally generated to be approximately
1/3 of V
The logic inputs (IN_) accept up to +5.5V even if the
supply voltages are below this level. For example, with
a +3.3V V
high to +5.5V allowing for mixing of logic levels in a
system. Driving IN_ rail-to-rail minimizes power con-
sumption. For a +2V supply voltage, the logic thresholds
are 0.5V (low) and 1.4V (high); for a +5V supply voltage,
the logic thresholds are 0.8V (low) and 1.8V (high).
0.75Ω, Dual SPDT Audio Switch with
Integrated Comparators
6
_______________________________________________________________________________________
PIN
1, 8
EP
10
11
12
13
14
15
16
CC
2
3
4
5
6
7
9
CC
.
supply, IN_ can be driven low to GND and
Applications Information
COUT1
COUT2
NAME
COM1
COM2
CIN1
CIN2
GND
N.C.
NO1
NC2
NO2
NC1
V
IN2
IN1
—
CC
Detailed Description
Digital Control Inputs
No Connection. Not internally connected.
Inverting Input for Comparator 1
Inverting Input for Comparator 2
Common Terminal for Analog Switch 1
Normally Open Terminal for Analog Switch 1
Ground
Normally Closed Terminal for Analog Switch 2
Digital Control Input for Analog Switch 2. A logic LOW on IN2 connects COM2 to NC2 and a logic
HIGH connects COM2 to NO2.
Common Terminal for Analog Switch 2
Output for Comparator 1
Normally Open Terminal for Analog Switch 2
Output for Comparator 2
Supply Voltage. Bypass to GND with a 0.01µF capacitor as close to the pin as possible.
Digital Control Input for Analog Switch 1. A logic LOW on IN1 connects COM1 to NC1 and a logic
HIGH connects COM1 to NO1.
Normally Closed Terminal for Analog Switch 1
Exposed Paddle. Connect to PC board ground plane.
The on-resistance of these switches changes very little
for analog input signals across the entire supply voltage
range (see the Typical Operating Characteristics). The
switches are bidirectional, so the NO_, NC_, and COM_
pins can be either inputs or outputs.
The positive terminal of the comparator is internally set to
V
threshold (V
high. When CIN_ rises above V
The comparator threshold allows for detection of head-
phones since headphone audio signals are typically
biased to V
Caution: Do not exceed the absolute maximum rat-
ings because stresses beyond the listed ratings
may cause permanent damage to the device.
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V
analog signals, especially if the analog signal is not
current-limited.
CC
/3. When the negative terminal (CIN_) is below the
FUNCTION
CC
CC
/2.
/3), the comparator output (COUT_) is
Power-Supply Sequencing
Analog Signal Levels
CC
Pin Description
/3, COUT_ is low.
CC
before applying
Comparator