Datasheet CWB309CY, CWB309CP, CWB308CY, CWB308CP Datasheet (Calogic LLC)

CORPORATION

IN

IN

IN

IN

S

D

3

4

1

2

S

D

S

D

S

D

1

1
2

2
3

3
4

4

IN

IN

IN

IN

S

D

3

4

1

2

S

D

S

D

S

D

1

1
2

2
3

3
4

4

Four SPST Switches per Package.
Switches shown in Logic '1' Input Position.

CWB308 CWB309

CMOS/DMOS

Quad Monolithic SPST

Wide Band Analog Switches

CWB308 / CWB30 9

FEATURES

Low Inserti on Lo s s . . . . . . . . . . . . . 0.9 x DC @ 100MHz

••

Low Channel-to-Chan nel Crosstalk. . . . . . . . . . . . -80dB

••

High OFF Isolation . . . . . . . . . . . . . . . . . 68dB @ 10MHz

••

Fast Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . <140ns

••

Low ON Resistance . . . . . . . . . . . . . . . . . . . . . . 40Ω (typ)

••

APPLICATIONS

High Speed M ul tip le xi ng

••

RF & Video Sw itc h es

••

Sample and Hold Sw itch es

••

Track and Hol d Switc hes

••

Comp u te r Pe r ip he r al s

••

PIN CONFIGURATION FUNCTIONAL BLOCK DIAGRAMS

1

IN1

2

D1

3

S1

4

V-

5

GND

6

S4

7

D4

IN4

8

CWB

LOGIC TABLE

CWB308CY
CWB309CY

Logic CWB308 CWB309

0 OFF ON
1 ON OFF

DESCRIPTION

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 circ uitr y with
high speed, low capacitance DMOS sw itches in a monolithic
structure. The CWB308 and CWB309 have CMOS
compatible inputs and also have a standard pin configuration
for second sourcing.

ORDERING INFORMATION
Part Package Temperature Range

o

CWB308CP Plastic 16-Pin Dip 0 to +85
CWB308CY Plastic SO-16 Surface Mount 0 to +85
XCWB308 Sorted Chips in Carriers 0 to +85
CWB309CP Plastic 16-Pin Dip 0 to +85
CWB309CY Plastic SO-16 Surface Mount 0 to +85
XCWB309 Sorted Chips in Carriers 0 to +85

16-PIN DIPSO-16

16

IN2

15

D2

14

S2

13

V+

12

N/C

11

S3

10

D3

9

IN3

IN1

D1

S1

GND

S4

D4

IN4

1

2

3

4

V-

5

6

7

8

TOP VIEWTOP VIEW

CWB308CP
CWB309CP

IN2

16

D2

15

S2

14

V+

13

N/C

12

S3

11

D3

10

IN3

9

All devi ces con tain diod es t o pro tect inputs against d amage d ue
to high static vo ltag e s or ele ctri c fie lds; ho wever, 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 V

or GND).

cc

C

o

C

o

C

o

C

o

C

o

C

CWB308 / CWB3 09

CORPORATION

ABSOLUTE MAXIMUM RATINGS

V- Negative Supply Voltage . . . . . . . . . . . . . . . . . . . . -20 V

V+ Positive Supply Volt age. . . . . . . . . . . . . . . . . . . . . +20V

Control Input Vo ltag e Range . . . . . . . . . . . . . . V+ +0.3V

V

IN

V- -0.3V

Continuous Current, any Pin excep t S or D. . . . . . 20mA

I

L

I

Continuou s Curre nt, S or D . . . . . . . . . . . . . . . . . . 30mA

S

Peak Pulsed Current, S or D, 80µsec, 1%,

I

S

RECOMMENDED OPERAT ING CONDITION S

V- Negative Supply Voltage . . . . . . . . . . . . . . . -8.0 to -15V

V+ Positive Supply V olt age. . . . . . . . . . . . . . . +8.0 to +15V

Control Input Vo ltage Range . . . . . . . . . . . . . . 0 to +5V

V

IN

Analog Switch V olt age Ran ge. . . . . . . . . . . -10 to +10V

V

S

Operating Temperature . . . . . . . . . . . . . . . . 0 to +85oC

T

OP

Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180mA

Junction Tempe ra ture Range. . . . . . . . . . -55 to +125oC

T

J

Storage Temper ature Ran ge. . . . . . . . . . -55 to +125oC

T

S

P

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . 500mW

D

ELECTRICAL CHARACTERISTICS (V- = -15V, V+ = +15V unle ss otherwise n ot ed, T

SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS

STATIC

V

ANALOG

r

DS(ON)

V

IH

V

IL

I

IN

I

D(OFF)

I

S(OFF)

I- Negative Supply Quiescent Current -0.1 -0.5
I+ Positive Supply Quiescent Current 0.1 0 .5

DYNAMIC

t

ON

t

OFF

O

IRR

C

CRR

C

d

C

s

Analog Signal Range -10 +10 V

40 80

Switch ON Resistance

45 80 V

100 160 V
High Level Input Voltage 4.5 3.4
Low Level Input Voltage 1.0

Logic Input Leakage Current

Switch OFF Leakage Current

0.01 0.1

0.02 0.1 V

0.2 5.0

0.4 5.0 VS = +10V, VD = -10V

Switch Turn-ON Time 140 250
Switch Turn-OFF Time 80 220
Off Isolation Rejection Ratio 60 62
Cross-Coupling Rejection Ratio 80 f = 10MHz, RL = 50Ω
Drain-Node Capacitance 0.3

Source-Node Cap acita nce 3.0

= +25oC)

A

ohms

V

µA

nA

µA

nSec

dB

pF

V

= -10V

S

= +2.0V

S

= +10V

S

V

= +5.0V

IN

= +15V

IN

V

= +10V, VS = -10V

D

V

= 1.0V CWB308

IN

V

= 5.0V CWB309

IN

f = 10MHz, RL = 50Ω

VIN = 1.0V CGWB308
V

= 5.0V CWB309

IN

V

= VS = 0, f = 1MHz

D

CWB309

V

= 5.0V

IN

CWB308

V

= 1.0V

IN

CORPORATION

ELECTRICAL CHARACTERISTICS (V- = -15V, V+ = +15V unless other wise no ted)
LIMITS A T TEMPERATURE EXTREMES

CWB308 / CWB30 9

SYMBOL PARAMETER

MAXIMUM @ T

+85

STATIC

V

ANALOG

Analog Signal Range ±10 V

120

r

DS(ON)

Switch ON Resistance

120 V
240 V

I

IN

I

D(OFF)

I

S(OFF)

I­I+ 20

Logic In put
Leakage Current

Switch OFF
Leakage Current

Supply
Quiescent Current

1.0

2.0 V
100
100 VS = +10V, VD = -10V

-20

TEST WAVE FORMS

3.0V

=

A

o

C

UNITS TEST CONDITIONS

V

= -10V

S

ohm s

µA

nA

= +2.0V

S

= +10V

S

V

= +5.0V

IN

= +1 5V

IN

V

= +10V, VS = -10V

D

µA

LOGIC INPUT

t < 6nSEC

RISE

t < 4nSEC

FALL

R + r

L

R

L

0

V

0

0

DS(ON)

(V ) SWITCH INPUT

S

SWITCH OUTPUT

V =

0

()

50%

0.9

t

ON

V

S

t

OFF

CWB308 / CWB3 09

SWICHING TIMES

-VS-

SUPPLY VOLTAGES

300

200

100

0

T = +25 C

A

o

t

on

t

off

Supply Voltages (Volts)

+5

+10

+15

Switching Time (nSec)

_

_

_

FUNCTIONAL BLOCK DIAGRAMS (1 of 4 channels)

CORPORATION

V+

IN

IL

GND

LT

CMOS CIRCUITRY

SWITCHING TIMES TEST CIRCUIT

+15V

SWITCH

INPUT

+3V

LOGIC
INPUT

R =
1K

Switch Contacts:

Switches are bi-directional (Analog Input can be to
Source or Drain. H o wever, for optimum performance i n
Video Application, connect Input to Source and Output
to Drain.

D

S

V-

DMOS SWITCH

SWITCH

OUTPUT

C = 35pF

L

Ω

L

-15V

OFF ISOLATION TEST CIRCUIT

KROHNHITE

240D

(or equivalent)

D

50

Ω

PM3214

A
B

S

50

Ω

C

OFF-ISOLATION

PHILIPS
SCOPE

(or equivalent)

C

V+

LOGIC 1 = +5V

V-

µC = 0.22 F // 10 F

OFF ISOLATION REJECTION RATIO

60

55

50

V-, V+ = +15V_

Ω

R = 50

L

45

40

µ

35

20 30 40 50 60 70 80 90 100

OIRR - OFF Isolation Rejection Ratio (db)

T = +25 C

A

o

-VS-

FREQUENCY

f - Frequency (MHz

CORPORATION

SWITCH ON RESISTANCE

CWB308 / CWB30 9

140

V-, V+ = +15V_
R = 50Ω

120

L

T = +25 C

A

100

80

60

40

DS(on)

20

r - Switch ON Resistance (Ohms)

0

-10 -5.0 0

SWITCH ON RESISTANCE

-VS-

ANALOG VOLTAGE

o

+5.0

V - Source Voltage (Volts)

S

+10

SWITCH ON RESIST ANCE -VS- FREQUENCY TEST CIRCUIT

HP

TRACKING
GENERATOR
(or equivalent)

HP
SPECTRUM
ANALYSER

(or equivalent)

D

50

Ω

S

50

Ω

ON-RESISTANCE

SWITCH ON RESISTANCE

-VS-

SUPPLY VOLTAGES

65

60

55

Vanalog = 100mVrms

f = 1KHz

o

T = +25 C

A

Ω

R = 50

L

50

45

DS(on)

+5.0

r - Switch ON Resistance (Ohms)

__

+6.0 +8.0

__ _

+10 +12 +15_

V-, V+ - Supply Voltages (Volts)

V+

C

LOGIC 1 = +5V

µ

µC = 0.22 F // 10 F

V-

C

20MHz to 100MHz

SWITCH ON RESISTANCE

-VS-

FREQUENCY

65

V-, V+ = +8.0V_

60

55

50

DS(on)

r - Switch ON Resistance (Ohms)

20 40 60 80 100

+10V_V-, V+ =

V-, V+ =

+12V_
+15V_V-, V+ =

Ω

R = 50

L

Vanalog = 100mVrms

T = +25 C

A

o

f - Frequency (MHz)

.55

ΩSwitch ON Resistance ( /V)

.50

.45

Vanalog = 100mVrms

.40

.35

.30

20

SWITCH ON RESISTANCE

SUPPLY VOLTAGES AND FREQUENCY

+10V_V-, V+ =

Ω

R = 50

L

+12V_V-, V+ =

-VS-

o

T = +25 C

A

40 60 80 100

f - Frequency (MHz)

CWB308 / CWB3 09

DISTORTION - VS- FREQ UENCY

CORPORATION

HP
GENERATOR
(or equivalent)

HP
SPECTRUM
ANALYSER

(or equivalent)

D

50

Ω

S

50

Ω

C

HARMONIC DISTORTION

10.0

Distortion (%)

0.05

0.02

C

V- = -15V, V+ = +15V

5.0
f = 10KHz, R = 50

2.0

1.0

0.3

0.1

V+

0.80

V-, V+ = _+15V Vanalog = 1.0Vrms

0.50
V-, V+ = _+15V Vanalog = 0.3Vrms

-VS-

0.20

0.10

o

T = +25 C

Total Harmonic Distortion (%)

o

A

0.05

10 20

LOGIC 1 = +5V

µ

µC = 0.22 F // 10 F

V-

10MHz - 40MHz

DISTORTION

ANALOG INPUT VOLTAGE

T = +25 C

Ω

L

Total Harmonic

Compensated

0.3 1.0 3.0

A

Vanalog - Analog Input (Vrms)

TOTAL HARMONIC DISTORTION

-VS-

FREQUENCY

V-, V+ = _

f - Frequency (MHz)

5.0

+10V Vanalog = 1.0Vrms

40

POWER SUPPLY REJECTION RATIO POWER SUPPL Y DECO UPLING CIRCUIT

µ

.22 F

IN

IL

LT

µ

.22 F

1K

Ω

Ω

1K

V+

90

80

S

D

V-

70
60

V- = 15V, V+ = +15V

50

V = 4.0V -f-p

MOD

Rejection Ratio (dB)

PSRR - Power Supply

40

CWB309CP

30

0.1 0.2 0.5 1.0 10.0 20

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.

POWER SUPPLY REJECTION RATIO

-PSRR, +PSRR with Decoupling

T = +25 C

A

-VS-

FREQUENCY

-PSRR
w/o Decoupling

+PSRR

o

2.0 5.0

f - Frequency (MHz)

CORPORATION

APPLICA TIONS

LOW DISTO RTION, RAIL-T O -RAIL ANALOG SW I T CH

Features very low distortion for low frequency and large
signal applications.

CWB308 / CWB30 9

C

1

R

1

ANALOG IN

R

2

LOGIC INVERTER

R

3

RR

45

C

V+

2

+V

VERY LOW DIST ORTI ON CIRCUI T FOR LOW
FREQUENCY AND LARGE SIGNAL APPLICA TIONS

This circuit provides very low distortion ( <0.1%) and
high off isolation ( >90 dB) at signal levels equal to the
supply voltage. The si gnal passes through a T switch
configuration and at the same time is modulating the
power supply. This modulation m a inta ins a cons ta nt on

ANALOG OUT

R

6

R5 is for bypassing the power supply and has a typical
value of 1K ohm, R4 should be a value that can be
accommadat ed by the signal source as load, R3 is only

resistance r

(on) which in turn reduces the distortion.

DS

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 shou ld be set to
5 volts.

V-

-V

ANALOG IN

V+

This circuit p rovides logic inversion with two resistors
and one switch. It does not require additional logic
parts. The resistors divid e the suppl y voltage down to

R

1

ANALOG OUT

a 5 volt level when high and are switche d 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.

5V

R

2