Quad Audio Switch
Description
a
FEATURES “CIickless” Bilateral Audio Switching Four SPST Switches in a 20-Pin Package Ultralow THD+N: 0.
0008% @ 1 kHz (2 V rms, R L = 100 k ⍀) Low Charge Injection: 35 pC typ High OFF Isolation: –100 dB typ (RL = 10 k⍀ @ 1 kHz) Low Crosstalk: –94 dB typ (R L = 10 k⍀ @ 1 kHz) Low ON Resistance: 28 ⍀ typ Low Supply Current: 900 A typ Single or Dual Supply Operation: +11 V to +24 V or ؎ 5.
5 V to ؎ 12 V Guaranteed Break-Before-Make TTL and CMOS Compatible Logic Inputs Low Cost-Per-Switch
CONTROL
Quad Audio Switch SSM2404
BLOCK DIAGRAM OF ONE SWITCH CHANNEL
V– LOGIC INTERFACE AND BREAK-BEFORE-MAKE CONTROL RAMP GENERATOR SW1 A SW1 B
DIGITAL CONTROL
V+
PIN CONNECTIONS Epoxy Mini-DIP (P Suffix) and SOIC (S Suffix)
GENERAL DESCRIPTION
SW1 A AGND SW1 B DGND SW1 CONTROL SW2 CONTROL NC* SW2 B AGND SW2 A
1 2 3 4 5 6 7 8 9 10 NC = NO CONNECT SW2 SW3 SW1 SW1 SW4
20 19 18
SW4 A AGND SW4 B V+ SW4 CONTROL SW3 CONTROL V– SW3 B AGND SW3 A
The SSM2404 integrates four SPST analog switches in a single 20-pin package.
Developed specifically for high performance audio applications, distortion and noise are negligible over the full operating range of 20 Hz to 20 kHz.
With very low charge injection of 35 pC, “clickless” audio switching is possible, even under the most demanding conditions.
Switch control is realized by conventional TTL or CMOS logic.
Guaranteed “break-before-make” operation assures that all switches in a large system will open before any switch reaches the ON state.
Single or dual supply operation is possible.
Additional features include –100 dB OFF isolation, –94 dB crosstalk and 28 Ω ON resistance.
Optional current-mode switching permits an extended signal-handling range.
Although optimized for large load impedances, the SSM2404 maintains good audio performance even under low load impedance conditions.
O
TOP VIEW (Not to Scale) SSM2404
17 16 15 14 13 12 11
*CONNECT TO ANALOG GROUND
FOR BEST NOISE ISOLATION
REV.
B
Information furnished by Analog Devices is b...
Similar Datasheet
