 Features
 Operating VCC range: 2.3 V to 5.5 V
 High-performance switch:
− Bandwidth (-3 dB): 180 MHz (Typ.)
− RON (SBU1): 0.85 Ω (Typ.)
− RON (SBU2): 0.65 Ω (Typ.)
− THD+N = -106 dB, 0.5 VRMS, f = 20 Hz ~ 20
kHz, 32 Ω load
− Crosstalk = -110 dB,f = 1 kHz, RL = 50 Ω,
VSW = 0.7 VRMS
− Off-isolation = -105 dB, f = 1 kHz, RL = 32 Ω,
CL = 0 pF, VSW = 1 VRMS
 SBUx pins OVP: 4.2 V (Typ.)
 SBUx pins up to 12 V DC
 Support 1.2 V GPIO control (VIH: 0.825 V Min.)
 Active supply current: 32 μA (Typ.)
 Shutdown current:0.3 μA (Typ.)
 Operating temperature range: -40°C to 85°C
 Applications
 Mobile phone
 PC / Notebook
 Description
The DIO1521 is a 2-channel exchange switch. The
DIO1521 operates from a single 2.3 V to 5.5 V
supply and features an ultra-low on resistance of
0.85 Ω for SBU1 and 0.65 Ω for SBU2 at a 3.3 V
supply and TA = 25°C. This device is fabricated with
sub-micron CMOS technology to achieve fast
switching speeds and is designed for
break-before-make operation.
The DIO1521 guarantees low on-resistance
matching between switches, on-resistance flatness
over the signal range, high off-isolation and low
crosstalk, which ensures excellent linearity and low
distortion when switching audio signals. The
DIO1521 consists of two normally open and two
normally close switches.
The DIO1521 provides Green QFN1.8*1.4-10
package.