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SSM2402 Dataheets PDF



Part Number SSM2402
Manufacturers Analog Devices
Logo Analog Devices
Description Dual Audio Analog Switches
Datasheet SSM2402 DatasheetSSM2402 Datasheet (PDF)

a FEATURES “Clickless” Bilateral Audio Switching Guaranteed “Break-Before-Make” Switching Low Distortion: 0.003% typ Low Noise: 1 nV/√Hz Superb OFF-Isolation: 120 dB typ Low ON-Resistance: 60 ⍀ typ Wide Signal Range: VS = ؎18 V; 10 V rms Wide Power Supply Range: ؎20 V max Available in Dice Form GENERAL DESCRIPTION Dual Audio Analog Switches SSM2402/SSM2412 FUNCTIONAL BLOCK DIAGRAM The SSM2402/SSM2412 are dual analog switches designed specifically for high performance audio applications. Distor.

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a FEATURES “Clickless” Bilateral Audio Switching Guaranteed “Break-Before-Make” Switching Low Distortion: 0.003% typ Low Noise: 1 nV/√Hz Superb OFF-Isolation: 120 dB typ Low ON-Resistance: 60 ⍀ typ Wide Signal Range: VS = ؎18 V; 10 V rms Wide Power Supply Range: ؎20 V max Available in Dice Form GENERAL DESCRIPTION Dual Audio Analog Switches SSM2402/SSM2412 FUNCTIONAL BLOCK DIAGRAM The SSM2402/SSM2412 are dual analog switches designed specifically for high performance audio applications. Distortion and noise are negligible over the full audio operating range of 20 Hz to 20 kHz at signal levels of up to 10 V rms. The SSM2402/ SSM2412 offer a monolithic integrated alternative to expensive and noisy relays or complex discrete JFET circuits. Unlike conventional general-purpose CMOS switches, the SSM2402/SSM2412 provide superb fidelity without audio “clicks” during switching. Conventional TTL or CMOS logic can be used to control the switch state. No external pull-up resistors are needed. A “T” configuration provides superb OFF-isolation and true bilateral operation. The analog inputs and outputs are protected against overload and overvoltage. An important feature is the guaranteed “break-before-make” for all units, even IC-to-IC. In large systems with multiple switching channels, all separate switching units must open before any switch goes into the ON-state. With the SSM2402/ SSM2412, you can be certain that multiple circuits will all break-before-make. The SSM2402/SSM2412 represent a significant step forward in audio switching technology. Distortion and switching noise are significantly reduced in the new SSM2402/SSM2412 bipolarJFET switches relative to CMOS switching technology. Based on a new circuit topology that optimizes audio performance, the SSM2402/SSM2412 make use of a proprietary bipolarJFET process with thin-film resistor network capability. Nitride capacitors, which are very area efficient, are used for the proprietary ramp generator that controls the switch resistance transition. Very wide bandwidth amplifiers control the gate-to-source voltage over the full audio operating range for each switch. The ON-resistance remains constant with changes in signal amplitude and frequency, thus distortion is very low, less than 0.01% max. The SSM2402 is the first analog switch truly optimized for high-performance audio applications. For broadcasting and other switching applications which require a faster switching time, we recommend the SSM2412—a dual analog switch with one-third of the switching time of the SSM2402. REV. A 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. PIN CONNECTIONS 14-Pin Epoxy DIP (P-Suffix) 16-Pin SOL (S-Suffix) One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 SSM2402/SSM2412–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter POSITIVE SUPPLY CURRENT NEGATIVE SUPPLY CURRENT GROUND CURRENT DIGITAL INPUT HIGH DIGITAL INPUT LOW LOGIC INPUT CURRENT ANALOG VOLTAGE RANGE 3 3 (@ VS = ؎18 V, RL = OPEN, and –40؇C ≤ TA ≤ +85؇C unless otherwise noted. All specifications, tables, graphs, and application data apply to both the SSM2402 and SSM2412, unless otherwise noted.) Symbol +ISY –ISY IGND VINH VINL ILOGIC VANALOG IANALOG VIN = ± VSUPPLY RON –14.2 V ≤ VA ≤ +14.2 V IA = ± 10 mA, VIL = 2.0 V TA = +25°C TA = Full Temperature Range Tempco (∆RON/∆T) –14.2 V ≤ VA ≤ +14.2 V IA = ± 10 mA, VIL = 2.0 V VIL = 2.0 V –14.2 V ≤ VA ≤ +14.2 V VA = 0 V VIL = 0.8 V –14.2 V ≤ VA ≤ +14.2 V VA = 0 V VA = +10 V, RL = 2 kΩ TA = +25°C, See Test Circuit VA = +10 V, RL = 2 kΩ TA = +25°C, See Test Circuit TA = +25°C TA = +25°C VA = 1 V rms f = 5 kHz, TA = +25°C VA = 1 V rms f = 5 kHz, TA = +25°C VA = 10 V rms, 20 Hz to 20 kHz TA = +25°C, See Test Circuit VA = 10 V rms, 20 Hz to 20 kHz TA = +25°C 0 V to 10 V rms, 20 Hz to 20 kHz TA = +25°C, RL = 5 kΩ 20 Hz to 20 kHz, TA = +25°C 20 Hz to 20 kHz, TA = +25°C SSM2402 SSM2412 SSM2402 SSM2412 SSM2402 SSM2412 SSM2402 SSM2412 Conditions VIL = 0.8 V, 2.0 V1 VIL = 0.8 V, 2.0 V 1 SSM2402/SSM2412 Min Typ Max Units 6.0 4.8 0.6 20 0.8 1.0 –14.2 –10 ± 40 5.0 +10 7.5 6.0 1.5 mA mA mA V V µA mA mA VIL = 0.8 V, 2.0 V1 TA = Full Temperature Range TA = Full Temperature Range VIN = 0 V to 15 V2 +14.2 V ANALOG CURRENT RANGE SWITCH ON RESISTANCE OVERVOLTAGE INPUT CURRENT 60 0.2 1 85 115 5 Ω Ω Ω / °C % RON MATCH SWITCH ON LEAKAGE CURRENT RON MATCH IS(ON) 0.05 0.05 0.05 0.05 10.0 3.5 4.0 1.5 6.0 2.0 50 150 12 4 120 96 1.0 10.0 1.0 10.0 µA nA µA nA ms ms ms pC pF pF dB dB % nV/√Hz µV p-p SWITCH OFF LEAKAGE CURRENT IS(OFF) TURN-ON TIME4 TURN-OFF TIME5 BREAK-BEFORE-MAKE TIME DELAY6 CHARGE INJECTION ON-STATE INPUT CAPACITANCE O.


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