AS1747 Datasheet, PDF (1/13 Pages) ams AG – Low-Voltage, Dual SPDT, Audio Clickless Switch with Negative Rail Capability

Datasheet
AS1747
L o w - Vo l ta g e , D u a l S P D T, A u d i o C l i c k l e s s S w i t c h
with Negative Rail Capability
1 General Description
2 Key Features
The SPDT (single-pole/double-throw) switch AS1747
allows signals below ground to pass through without dis-
tortion. This analog switch is ideal for switching audio
signals, due to the supply voltage from +1.8V to +5.5V
and the low 0.4Ω on-resistance.
This SPDT switch is available in space-saving 10-pin
TDFN 3x3 packages and operate over the -40ºC to
+85ºC extended temperature range.
! Distortion -Free Negative Signal Throughput Down
to VCC - 5.5V
! Low On-Resistance (R_ON)
0.4Ω at +2.7V Supply
! 0.25Ω On-Resistance Flatness
! 0.03Ω On-Resistance Matching
! +1.8V to 5.5V Supply Voltage
! -90dB Crosstalk (100kHz)
! -65dB Off-Isolation (100kHz)
! Available in 10-pin TDFN 3x3 Packages
3 Applications
The device is ideal for cell phones, PDAs and hand-held
devices, notebook computers and MP3 players.
Figure 1. AS1747 - Typical Operating Circuit
Audio
Source 1
Out+
Out-
NC1
NO1
NC2
Out+
Audio
Source 2 _Out-
NO2
AS1747
COM1
IN1
Input
Select
8Ω
Speaker
IN2
COM2
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