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SSM2404 Datasheet

  • SSM2404

  • Quad Audio Switch

  • 8頁

  • AD

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a
FEATURES
鈥淐Iickless鈥?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: 鈥?00 dB typ (R
L
= 10 k @ 1 kHz)
Low Crosstalk: 鈥?4 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鈥?/div>
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鈥?/div>
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, 鈥渃lickless鈥?audio switching is possible, even
under the most demanding conditions.
Switch control is realized by conventional TTL or CMOS
logic. Guaranteed 鈥渂reak-before-make鈥?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 鈥?00 dB OFF isolation, 鈥?4 dB crosstalk and 28
鈩?/div>
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 believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703

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