CMOS/DMOS Quad Monolithic SPST Wide Band Analog Switches CORPORATION CWB308 / CWB309 FEATURES DESCRIPTION • Low Insertion Loss . . . . . . . . . . . . . 0.9 x DC @ 100MHz • Low Channel-to-Channel Crosstalk. . . . . . . . . . . . -80dB OFF Isolation . . . . . . . . . . . . . . . . . 68dB @ 10MHz • High • Fast Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . <140ns • Low ON Resistance . . . . . . . . . . . . . . . . . . . . . . 40Ω (typ) The Calogic CWB308 and CWB309 feature fast switching (<140ns) and low ON resistance (<40Ω) for excellent performance in applications in communications, computer peripherals and instrument controls. This series combines low power CMOS input logic and level translation circuitry with high speed, low capacitance DMOS switches in a monolithic structure. The CWB308 and CWB309 have CMOS compatible inputs and also have a standard pin configuration for second sourcing. APPLICATIONS • High Speed Multiplexing & Video Switches • RF • Sample and Hold Switches and Hold Switches • Track • Computer Peripherals ORDERING INFORMATION PIN CONFIGURATION Part Package CWB308CP CWB308CY XCWB308 CWB309CP CWB309CY XCWB309 Plastic 16-Pin Dip Plastic SO-16 Surface Mount Sorted Chips in Carriers Plastic 16-Pin Dip Plastic SO-16 Surface Mount Sorted Chips in Carriers Temperature Range 0 to +85oC 0 to +85oC 0 to +85oC 0 to +85oC 0 to +85oC 0 to +85oC FUNCTIONAL BLOCK DIAGRAMS SO-16 CWB308 16-PIN DIP IN1 1 16 IN2 IN1 1 16 IN2 D1 2 15 D2 D1 2 15 D2 S1 3 14 S2 S1 3 14 S2 V- 4 13 V+ V- 4 13 V+ GND 5 12 N/C GND 5 12 N/C S4 6 11 S3 S4 6 11 S3 D4 7 10 D3 D4 7 10 D3 IN4 8 9 IN4 8 9 CWB309 S1 IN 1 D1 S2 IN 2 TOP VIEW TOP VIEW CWB308CY CWB309CY CWB308CP CWB309CP CWB IN3 D1 S2 IN 2 D2 S3 IN 3 D2 S3 IN 3 D3 S4 IN 4 IN3 S1 IN 1 D3 S4 IN 4 D4 Four SPST Switches per Package. Switches shown in Logic '1' Input Position. LOGIC TABLE Logic CWB308 CWB309 0 OFF ON 1 ON OFF All devices contain diodes to protect inputs against damage due to high static voltages or electric fields; however, it is advised that precautions be taken not to exceed the maximum recommended input voltages. All unused inputs must be connected to an appropriate logic level (either Vcc or GND). D4 CWB308 / CWB309 CORPORATION ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATING CONDITIONS VV+ VIN VV+ VIN VS TOP IL IS IS TJ TS PD Negative Supply Voltage . . . . . . . . . . . . . . . . . . . . -20V Positive Supply Voltage . . . . . . . . . . . . . . . . . . . . . +20V Control Input Voltage Range . . . . . . . . . . . . . . V+ +0.3V V- -0.3V Continuous Current, any Pin except S or D. . . . . . 20mA Continuous Current, S or D . . . . . . . . . . . . . . . . . . 30mA Peak Pulsed Current, S or D, 80µsec, 1%, Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180mA Junction Temperature Range. . . . . . . . . . -55 to +125oC Storage Temperature Range . . . . . . . . . . -55 to +125oC Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . 500mW Negative Supply Voltage . . . . . . . . . . . . . . . -8.0 to -15V Positive Supply Voltage . . . . . . . . . . . . . . . +8.0 to +15V Control Input Voltage Range . . . . . . . . . . . . . . 0 to +5V Analog Switch Voltage Range . . . . . . . . . . . -10 to +10V Operating Temperature . . . . . . . . . . . . . . . . 0 to +85oC ELECTRICAL CHARACTERISTICS (V- = -15V, V+ = +15V unless otherwise noted, TA = +25oC) SYMBOL PARAMETER MIN TYP MAX UNITS +10 V TEST CONDITIONS STATIC VANALOG Analog Signal Range -10 40 rDS(ON) Switch ON Resistance VIH High Level Input Voltage VIL Low Level Input Voltage IIN Logic Input Leakage Current ID(OFF) 4.5 80 45 80 100 160 3.4 VS = -10V ohms VS = +2.0V VS = +10V V 1.0 Switch OFF Leakage Current IS(OFF) 0.01 0.1 0.02 0.1 0.2 5.0 0.4 5.0 I- Negative Supply Quiescent Current -0.1 -0.5 I+ Positive Supply Quiescent Current 0.1 0.5 tON Switch Turn-ON Time 140 250 tOFF Switch Turn-OFF Time 80 220 µA nA VIN = +5.0V VIN = +15V VD = +10V, VS = -10V VS = +10V, VD = -10V µA DYNAMIC OIRR Off Isolation Rejection Ratio CCRR Cross-Coupling Rejection Ratio 60 80 62 Cd Drain-Node Capacitance 0.3 nSec dB Source-Node Capacitance 3.0 f = 10MHz, RL = 50Ω f = 10MHz, RL = 50Ω pF Cs VIN = 1.0V CWB308 VIN = 5.0V CWB309 VIN = 1.0V CGWB308 VIN = 5.0V CWB309 VD = VS = 0, f = 1MHz CWB309 VIN = 5.0V CWB308 VIN = 1.0V CWB308 / CWB309 CORPORATION ELECTRICAL CHARACTERISTICS (V- = -15V, V+ = +15V unless otherwise noted) LIMITS AT TEMPERATURE EXTREMES MAXIMUM @ TA = SYMBOL PARAMETER UNITS TEST CONDITIONS +85oC STATIC VANALOG ±10 Analog Signal Range V 120 rDS(ON) Switch ON Resistance VS = -10V ohms 120 240 IIN ID(OFF) IS(OFF) II+ Logic Input Leakage Current 1.0 Switch OFF Leakage Current 100 Supply Quiescent Current -20 VS = +10V µA 2.0 VD = +10V, VS = -10V nA 100 VS = +10V, VD = -10V µA 20 3.0V LOGIC INPUT t RISE < 6nSEC t FALL < 4nSEC 50% 0 (VS ) SWITCH INPUT V0 0.9 SWITCH OUTPUT 0 V0 = (R L VIN = +5.0V VIN = +15V TEST WAVE FORMS RL VS = +2.0V tON ) + r DS(ON) VS t OFF CWB308 / CWB309 CORPORATION FUNCTIONAL BLOCK DIAGRAMS (1 of 4 channels) Switch Contacts: V+ IN Switches are bi-directional (Analog Input can be to Source or Drain. However, for optimum performance in Video Application, connect Input to Source and Output to Drain. LT IL D S GND VCMOS CIRCUITRY DMOS SWITCH SWICHING TIMES -VSSUPPLY VOLTAGES SWITCHING TIMES TEST CIRCUIT 300 Switching Time (nSec) +15V SWITCH OUTPUT SWITCH INPUT +3V C L = 35pF RL = 1K Ω LOGIC INPUT TA = +25 oC t on 200 t off 100 -15V 0 +10 _ +5 _ +15 _ Supply Voltages (Volts) OFF ISOLATION TEST CIRCUIT V+ KROHNHITE 240D (or equivalent) D 50 Ω LOGIC 1 = +5V PHILIPS SCOPE A B PM3214 (or equivalent) S C = 0.22 µ F // 10 µ F 50 Ω VC OFF-ISOLATION OIRR - OFF Isolation Rejection Ratio (db) C OFF ISOLATION REJECTION RATIO -VSFREQUENCY 60 55 50 45 40 35 V-, V+ = _ +15V R L = 50 Ω TA = +25 oC 20 30 40 50 f - Frequency (MHz 60 70 80 90 100 CWB308 / CWB309 CORPORATION SWITCH ON RESISTANCE SWITCH ON RESISTANCE -VSANALOG VOLTAGE V-, V+ = _ +15V R L = 50 Ω TA = +25 oC 120 SWITCH ON RESISTANCE -VSSUPPLY VOLTAGES r DS(on)- Switch ON Resistance (Ohms) r DS(on)- Switch ON Resistance (Ohms) 140 100 80 60 40 65 R L = 50 Ω Vanalog = 100mVrms f = 1KHz 60 55 TA = +25 oC 50 45 +5.0 _ _ +6.0 _ +8.0 _ +10 _ +12 _ +15 V-, V+ - Supply Voltages (Volts) 20 0 -10 -5.0 0 +10 +5.0 V S - Source Voltage (Volts) SWITCH ON RESISTANCE -VS- FREQUENCY TEST CIRCUIT V+ C HP TRACKING GENERATOR (or equivalent) D 50 Ω LOGIC 1 = +5V HP SPECTRUM ANALYSER (or equivalent) S C = 0.22 µ F // 10 µ F 50 Ω VC 20MHz to 100MHz SWITCH ON RESISTANCE -VSFREQUENCY SWITCH ON RESISTANCE -VSSUPPLY VOLTAGES AND FREQUENCY 65 Switch ON Resistance (Ω /V) r DS(on) - Switch ON Resistance (Ohms) ON-RESISTANCE V-, V+ = _ +8.0V _ 60 V-, V+ = +10V V-, V+ = +12V _ 55 V-, V+ = +15V _ R L = 50 Ω Vanalog = 100mVrms 50 20 TA = +25 oC 40 60 f - Frequency (MHz) 80 100 .55 .50 .45 .40 V-, V+ = +10V _ R L = 50 Ω Vanalog = 100mVrms TA = +25 oC V-, V+ = +12V _ .35 .30 20 40 60 f - Frequency (MHz) 80 100 CWB308 / CWB309 CORPORATION DISTORTION -VS- FREQUENCY V+ TOTAL HARMONIC DISTORTION -VSFREQUENCY HP GENERATOR (or equivalent) Total Harmonic Distortion (%) C D 50 Ω LOGIC 1 = +5V HP SPECTRUM ANALYSER (or equivalent) S C = 0.22 µ F // 10 µ F 50 Ω 0.80 V-, V+ = +10V _ Vanalog = 1.0Vrms V-, V+ = + _ 15V Vanalog = 1.0Vrms 0.50 V-, V+ = + _ 15V Vanalog = 0.3Vrms 0.20 0.10 TA = +25 oC 0.05 10 20 40 f - Frequency (MHz) VC HARMONIC DISTORTION 10MHz - 40MHz DISTORTION -VSANALOG INPUT VOLTAGE Distortion (%) 10.0 5.0 2.0 1.0 V- = -15V, V+ = +15V f = 10KHz, R L = 50 Ω TA = +25 oC Total Harmonic 0.3 0.1 0.05 Compensated 0.02 0.3 1.0 5.0 3.0 Vanalog - Analog Input (Vrms) POWER SUPPLY REJECTION RATIO POWER SUPPLY DECOUPLING CIRCUIT .22 µ F V+ 1K Ω POWER SUPPLY REJECTION RATIO -VSFREQUENCY 90 IN IL LT S .22 µ F D 1K Ω V- PSRR - Power Supply Rejection Ratio (dB) -PSRR, +PSRR with Decoupling 80 70 -PSRR 60 V- = 15V, V+ = +15V 50 VMOD = 4.0V -f-p w/o Decoupling +PSRR 40 CWB309CP TA = +25 oC 30 0.1 0.2 0.5 1.0 2.0 f - Frequency (MHz) By inserting 1K ohm resistors in series with V+ and Vpower supply lines and decoupling both pins at the device socket, it is possible to improve power supply rejection ratios of a video switch by 50dB at frequencies of 20MHz and higher. 5.0 10.0 20 CWB308 / CWB309 CORPORATION APPLICATIONS LOW DISTORTION, RAIL-TO-RAIL ANALOG SWITCH Features very low distortion for low frequency and large signal applications. C1 R4 R3 R5 +V C2 V+ R1 ANALOG IN ANALOG OUT R6 VERY LOW DISTORTION CIRCUIT FOR LOW FREQUENCY AND LARGE SIGNAL APPLICATIONS This circuit provides very low distortion ( <0.1%) and high off isolation ( >90 dB) at signal levels equal to the supply voltage. The signal passes through a T switch configuration and at the same time is modulating the power supply. This modulation maintains a constant on resistance rDS(on) which in turn reduces the distortion. R5 is for bypassing the power supply and has a typical value of 1K ohm, R4 should be a value that can be accommadated by the signal source as load, R3 is only necessary at loads lower than 100 ohms and should be selected during the initial design of the circuit, C1 has to be large enough for the lowest signal to pass and C2 will have to bypass all signals. R1 and R2 set up the one logic level for the control input and should be set to 5 volts. V- R2 -V LOGIC INVERTER V+ R1 ANALOG IN ANALOG OUT 5V R2 This circuit provides logic inversion with two resistors and one switch. It does not require additional logic parts. The resistors divide the supply voltage down to a 5 volt level when high and are switched to a low level via the switch. This configuration allows a single pole, single throw switch to be changed into a single pole, double throw switch.