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AS1750-BWLT Datasheet(PDF) 2 Page - ams AG

Part # AS1750-BWLT
Description  Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS1750-BWLT Datasheet(HTML) 2 Page - ams AG

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AS1747, AS1748, AS1749, AS1750
Low-Vo ltage, Dual SPDT, A udio Clickless Switches with
Negative Rail Capability
www.austriamicrosystems.com/Analog-Switches/AS1747-50
Revision 1.02
1 - 16
Data sheet
1 General Description
The SPDT (single-pole/double-throw) switches AS1747,
AS1748, AS1749 and AS1750 allow signals below
ground to pass through without distortion. These analog
switches are ideal for switching audio signals, due to
their supply voltage from +1.8V to +5.5V and their low
0.4
Ω on-resistance.
An included comparator offers the AS1748 and AS1750
with headphone detection or mute/send key function.
To reduce click-and-pop sounds when switching
between pre-charged points the AS1749 and AS1750
have an internal shunt switch. This shunt switch auto-
matically discharges any capacitance at the NO and NC
connection points.
This SPDT switch is available in space-saving 10-pin
TDFN 3x3 packages and operate over the -40ºC to
+85ºC extended temperature range.
Figure 1. Typical Operating Circuit
2 Key Features
!
Distortion -Free Negative Signal Throughput Down
to VCC - 5.5V
!
Comparator for Headphone or Mute Detection
(AS1748/AS1750)
!
Internal Shunt Resistor Reduces Click/Pop
(AS1749/AS1750)
!
Low On-Resistance (RON)
0.4
Ω at +2.7V Supply
!
0.25
Ω On-Resistance Flatness
!
0.03
Ω On-Resistance Matching
!
+1.8V to +5.5V Supply Voltage
!
-90dB Crosstalk (100kHz)
!
-65dB Off-Isolation (100kHz)
!
0.01% Total Harmonic Distortion
!
Available in 10-pin TDFN 3x3, 16-pin TQFN 3x3,
and 12-Bump WL-CSP Packages
3 Applications
The device is ideal for cell phones, PDAs and hand-held
devices, notebook computers and MP3 players.
Audio
Source 1
Audio
Source 2
Out+
Out-
Out+
Out-
CMPO
NO2
NC2
NO1
NC1
Mute
IN1
COM1
IN2
COM2
CMP-
Mute
Button
V+
Shunt
Switch
+
-
8
Ω
Speaker
Input
Select
V+/3


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