AD ADG794BRQZ-REEL7 Low voltage, 300 mhz quad 2:1 mux analog hdtv audio/video switch Datasheet

Low Voltage, 300 MHz Quad 2:1 Mux Analog
HDTV Audio/Video Switch
ADG794
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Bandwidth: 300 MHz
Low insertion loss and on resistance: 5 Ω typical
On resistance flatness: 0.68 Ω typical
Single 3 V/5 V supply operation
Low quiescent supply current: 1 nA typical
Fast switching times:
tON, 7 ns
tOFF, 5 ns
TTL/CMOS compatible
ADG794
S1A
D1
S1B
S2A
D2
S2B
S3A
D3
S3B
S4A
D4
S4B
RGB switches
HDTV
DVD-R
Audio/video switches
EN
IN
05150-001
1 OF 2
DECODER
APPLICATIONS
Figure 1.
GENERAL DESCRIPTION
The ADG794 is a monolithic CMOS device comprising four
2:1 multiplexer/demultiplexers with high impedance outputs.
The CMOS process provides low power dissipation yet gives
high switching speed and low on resistance. The on resistance
variation is typically less than 1.2 Ω over the input signal range.
These switches conduct equally well in both directions when on.
In the off condition, signal levels up to the supplies are blocked.
The ADG794 switches exhibit break-before-make switching
action.
The bandwidth of the ADG794 is typically 300 MHz and this,
coupled with low distortion (typically 0.68%), makes the part
suitable for switching analog audio/video signals.
PRODUCT HIGHLIGHTS
1.
Wide bandwidth: 300 MHz.
The ADG794 operates from a single 3.3 V/5 V supply and is
TTL logic compatible. The switches are controlled by the logic
inputs IN and EN as shown in Table 4. The EN pin allows the
user to disable all switches.
2.
Ultralow power dissipation.
3.
Crosstalk is typically −70 dB at 10 MHz.
4.
Off isolation is typically −65 dB at 10 MHz.
The ADG794 is available in a 16-pin QSOP package.
Rev. 0
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 that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
ADG794
TABLE OF CONTENTS
Specifications..................................................................................... 3
Typical Performance Characteristics ..............................................8
Single Supply ................................................................................. 3
Typical Application .......................................................................8
Absolute Maximum Ratings............................................................ 5
Test Circuits........................................................................................9
ESD Caution.................................................................................. 5
Outline Dimensions ....................................................................... 11
Pin Configuration and Function Descriptions............................. 6
Ordering Guide .......................................................................... 11
Terminology ...................................................................................... 7
REVISION HISTORY
10/04—Revision 0: Initial Version
Rev. 0 | Page 2 of 12
ADG794
SPECIFICATIONS
SINGLE SUPPLY
VDD = 5 V ± 10%, GND = 0 V. All specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
ANALOG SWITCH
Analog Signal Range
On Resistance (RON)
On Resistance Match between Channels (∆RON)
B Version1
25°C
TMIN to TMAX
0 to 2.5
5
7
0.4
8
1.2
On Resistance Flatness (RFLAT(ON))
0.7
1.35
LEAKAGE CURRENTS
Source Off Leakage, IS (Off)
Drain Off Leakage, ID (Off)
Channel On Leakage, ID, IS (On)
DIGITAL INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current
IINL or IINH
Digital Input Capacitance, CIN
DYNAMIC CHARACTERISTICS2
tON, tON (EN)
±0.001
±0.001
±0.001
3
ns typ
ns max
ns typ
ns max
ns typ
ns min
dB typ
dB typ
MHz typ
% typ
pC typ
pF typ
pF typ
pF typ
CL = 35 pF; RL = 50 Ω
VS = 2 V; Figure 9
CL = 35 pF; RL = 50 Ω
VS = 2 V; Figure 9
CL = 35 pF; RL = 50 Ω
VS1 = VS2 = 2 V; Figure 10
f = 10 MHz; RL = 50 Ω; Figure 12
f = 10 MHz; RL = 50 Ω; Figure 13
RL = 50 Ω; Figure 11
RL = 100 Ω
CL = 1 nF; VS = 0 V; Figure 14
−65
−70
300
0.7
6
6
7.5
13.5
VDD = 5.5 V; digital inputs = 0 V or VDD
0.001
1
2
VS = 3 V/1 V; VD = 1 V/3 V; Figure 7
VS = 3 V/1 V; VD = 1 V/3 V; Figure 7
VD = VS = 3 V/1 V; Figure 8
VIN = VINL or VINH
1
1
nA typ
nA typ
nA typ
VD = 0 V to 1 V; IS = −10 mA
µA typ
µA max
pF typ
8
Off Isolation
Channel-to-Channel Crosstalk
Bandwidth −3 dB
Distortion
Charge Injection
CS (Off)
CD (Off)
CD, CS (On)
POWER REQUIREMENTS
IDD
VD = 0 V to 1 V; IS = −10 mA
VD = 0 V to 1 V; IS = −10 mA; Figure 6
±0.1
3
14
Break-Before-Make Time Delay, tD
V
Ω typ
Ω max
Ω typ
Ω max
Ω typ
Ω max
V min
V max
7
5
Test Conditions/Comments
2.4
0.8
0.001
tOFF, tOFF (EN)
Unit
Temperature range for B Version is −40°C to +85°C.
Guaranteed by design, not subject to production test.
Rev. 0 | Page 3 of 12
µA typ
µA max
ADG794
VDD = 3 V ± 10%, GND = 0 V. All specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
ANALOG SWITCH
Analog Signal Range
On Resistance (RON)
On Resistance Match between Channels (∆RON)
25°C
B Version1
TMIN to TMAX
0 to 1.5
7
9.5
0.3
11
0.9
On Resistance Flatness (RFLAT(ON))
2.6
5
LEAKAGE CURRENTS
Source Off Leakage, IS (Off)
Drain Off Leakage, ID (Off)
Channel On Leakage, ID, IS (On)
DIGITAL INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current
IINL or IINH
Digital Input Capacitance, CIN
DYNAMIC CHARACTERISTICS2
tON, tON (EN)
±0.001
±0.001
±0.001
3
ns typ
ns max
ns typ
ns max
ns typ
ns min
dB typ
dB typ
MHz typ
% typ
pC typ
pF typ
pF typ
pF typ
CL = 35 pF; RL = 50 Ω
VS = 1.5 V; Figure 9
CL = 35 pF; RL = 50 Ω
VS = 1.5 V; Figure 9
CL = 35 pF; RL = 50 Ω
VS1 = VS2 = 1.5 V; Figure 10
f = 10 MHz; RL = 50 Ω; Figure 12
f = 10 MHz; RL = 50 Ω; Figure 13
RL = 50 Ω; Figure 11
RL = 100 Ω
CL = 1 nF; VS = 0 V; Figure 14
−65
−70
300
2.6
4
6
7.5
13.5
VDD = 3.3 V; digital inputs = 0 V or VDD
0.001
1
2
VS = 2 V/1 V; VD = 1 V/2 V; Figure 7
VS = 2 V/1 V; VD = 1 V/2 V; Figure 7
VD = VS = 2 V/1 V; Figure 8
VIN = VINL or VINH
1
1
nA typ
nA typ
nA typ
VD = 0 V to 1 V; IS = −10 mA
µA typ
µA max
pF typ
10
Off Isolation
Channel-to-Channel Crosstalk
Bandwidth −3 dB
Distortion
Charge Injection
CS (Off)
CD (Off)
CD, CS (On)
POWER REQUIREMENTS
IDD
VD = 0 V to 1 V; IS = −10 mA
VD = 0 V to 1 V; IS = −10 mA; Figure 6
±0.1
3
16
Break-Before-Make Time Delay, tD
V
Ω typ
Ω max
Ω typ
Ω max
Ω typ
Ω max
V min
V max
8
6
Test Conditions/Comments
2.0
0.4
0.001
tOFF, tOFF (EN)
Unit
Temperature range for B Version is −40°C to +85°C.
Guaranteed by design, not subject to production test.
Rev. 0 | Page 4 of 12
µA typ
µA max
ADG794
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 3.
Parameters
VDD to GND
Analog, Digital Inputs1
Continuous Current, S or D
Peak Current, S or D
Operating Temperature Range
Industrial (B Version)
Storage Temperature Range
Junction Temperature
QSOP Package, Power Dissipation
θJA Thermal Impedance
Lead Temperature, Soldering
Vapor Phase (60 s)
Infrared (15 s)
1
Ratings
−0.3 V to +6 V
−0.3 V to VDD + 0.3 V or
30 mA, whichever occurs
first
100 mA
300 mA (pulsed at 1 ms,
10% duty cycle max)
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability. Only one absolute maximum rating may be
applied at any one time.
Table 4. Truth Table
−40°C to +85°C
−65°C to +150°C
150°C
566 mW
149.97°C/W
EN
IN
D1
D2
D3
D4
Function
1
0
0
X
0
1
Hi-Z
S1A
S1B
Hi-Z
S2A
S2B
Hi-Z
S3A
S3B
Hi-Z
S4A
S4B
Disable
IN = 0
IN = 1
215°C
220°C
Overvoltages at IN, S, or D are clamped by internal diodes. Current should be
limited to the maximum ratings given.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. 0 | Page 5 of 12
ADG794
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
IN 1
16
VDD
S1A 2
15
EN
ADG794
14
S4A
TOP VIEW
(Not to Scale)
13
S4B
S2A 5
12
D4
S2B 6
11
S3A
D2 7
10
GND 8
9
D1 4
S3B
D3
05150-002
S1B 3
Figure 2. Pin Configuration
Table 5. Pin Function Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Mnemonic
IN
S1A
S1B
D1
S2A
S2B
D2
GND
D3
S3B
S3A
D4
S4B
S4A
EN
VDD
Description
Logic Control Input. The logic level at this input controls the operation of the multiplexers (see Table 4).
A-Side Source Terminal of MUX1. Can be an input or output.
B-Side Source Terminal of MUX1. Can be an input or output.
Drain Terminal of MUX1. Can be an input or output.
A-Side Source Terminal of MUX2. Can be an input or output.
B-Side Source Terminal of MUX2. Can be an input or output.
Drain Terminal of MUX2. Can be an input or output.
Ground Reference.
Drain Terminal of MUX3. Can be an input or output.
B-Side Source Terminal of MUX3. Can be an input or output.
A-Side Source Terminal of MUX3. Can be an input or output.
Drain Terminal of MUX4. Can be an input or output.
B-Side Source Terminal of MUX4. Can be an input or output.
A-Side Source Terminal of MUX4. Can be an input or output.
MUX Enable Logic Input. Enables or disables the multiplexers (see Table 4).
Positive Power Supply Voltage.
Rev. 0 | Page 6 of 12
ADG794
TERMINOLOGY
VDD
Most positive power supply potential.
CS (Off)
Off switch source capacitance. Measured with reference to
ground.
IDD
Positive supply current.
CD (Off)
Off switch drain capacitance. Measured with reference to
ground.
GND
Ground (0 V) reference.
CD, CS (On)
On switch capacitance. Measured with reference to ground.
S
Source terminal. Can be either an input or an output.
CIN
Digital input capacitance.
D
Drain terminal. Can be either an input or an output.
tON
Delay time between the 50% and the 90% points of the digital
input and switch on condition.
IN
Logic control input.
VD (VS)
Analog voltage on terminals D, S.
tOFF
Delay time between the 50% and the 90% points of the digital
input and switch off condition.
RON
Ohmic resistance between D and S.
RFLAT (ON)
Flatness is defined as the difference between the maximum and
minimum value of on resistance as measured.
tBBM
On or off time measured between the 80% points of both
switches when switching from one to another.
∆RON
On resistance match between any two channels.
Charge Injection
A measure of the glitch impulse transferred from the digital
input to the analog output during on/off switching.
IS (Off)
Source leakage current with the switch off.
Off Isolation
A measure of unwanted signal coupling through an off switch.
ID (Off)
Drain leakage current with the switch off.
Crosstalk
A measure of unwanted signal that is coupled through from one
channel to another as a result of parasitic capacitance.
ID, IS (On)
Channel leakage current with the switch on.
VINL
Maximum input voltage for Logic 0.
VINH
Minimum input voltage for Logic 1.
IINL (IINH)
Input current of the digital input.
−3 dB Bandwidth
The frequency at which the output is attenuated by 3 dB.
On Response
The frequency response of the on switch.
Insertion Loss
The loss due to the on resistance of the switch.
THD + N
The ratio of the harmonic amplitudes plus noise of a signal to
the fundamental.
Rev. 0 | Page 7 of 12
ADG794
0
0
–20
–20
ATTENUATION (dB)
–40
–60
–40
–60
–80
–100
0.01
05150-003
–80
0.1
1
10
100
–100
0.01
1000
05150-004
ATTENUATION (dB)
TYPICAL PERFORMANCE CHARACTERISTICS
0.1
1
10
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 4. Crosstalk vs. Frequency
Figure 3. Off Isolation vs. Frequency
TYPICAL APPLICATION
ADG794
R
R OUTPUT
G
RGB VIDEO
SIGNAL SOURCE
1
G OUTPUT
B OUTPUT
B
AUDIO/SYNC/
OTHER OUTPUT
AUDIO/SYNC/OTHER
SIGNAL SOURCE 1
R
G
RGB VIDEO
SIGNAL SOURCE
2
EN
IN
05150-005
B
AUDIO/SYNC/OTHER
SIGNAL SOURCE 2
Figure 5. Audio/Video Switch
Rev. 0 | Page 8 of 12
100
1000
ADG794
TEST CIRCUITS
IDS
V1
D
A
VD
VS
Figure 6. On Resistance
S
NC
D
VD
NC = NO CONNECT
Figure 7. Off Leakage
Figure 8. On Leakage
5V
0.1µF
VIN
3V
VDD
S
50%
50%
VOUT
D
90%
VS
CL
35pF
RL
100Ω
IN
90%
VOUT
tOFF
05150-009
tON
GND
EN
Figure 9. Switching Times
5V
0.1µF
VDD
3V
S1A
VOUT
D1
RL
100Ω
VS
CL
35pF
50%
50%
0V
VOUT
50%
50%
VS
DECODER
tD
EN
tD
GND
05150-010
IN
Figure 10. Break-Before-Make Time Delay
VDD
0.1µF
ADG794
NETWORK
ANALYZER
S1A
50Ω
VS
IN
VIN
D1
EN
GND
VOUT
50Ω
05150-011
VS
VIN
S1B
Figure 11. Bandwidth
Rev. 0 | Page 9 of 12
A
05150-008
RON = V1/IDS
ID (ON)
ID (OFF)
S
A
05150-006
VS
IS (OFF)
D
05150-007
S
ADG794
VDD
0.1µF
ADG794
NETWORK
ANALYZER
S1A
50Ω
50Ω
VS
IN
VIN
VOUT
D1
EN
50Ω
05150-012
GND
Figure 12. Off Isolation
VDD
0.1µF
NETWORK
ANALYZER
ADG794
S1A
50Ω
VS
VOUT
S2A
RL
50Ω
IN
D2
D1
VIN
50Ω
50Ω
GND
05150-013
EN
Figure 13. Channel-to-Channel Crosstalk
5V
VDD
ADG794
VS
S1A
CL
1nF
S1B
S2A
CL
1nF
S2B
S3A
CL
1nF
S3B
S4A
CL
1nF
S4B
D1 VOUT
3V
VEN
D2 VOUT
VOUT
D3 VOUT
∆VOUT
QINJ = CL × ∆VOUT
D4 VOUT
1 OF 2
DECODER
EN
IN
05150-014
RS
Figure 14. Charge Injection
Rev. 0 | Page 10 of 12
Preliminary Technical Data
ADG794
OUTLINE DIMENSIONS
0.193 (4.90)
BSC
9
16
0.154
(3.91)
BSC
1
8
0.236
(5.99)
BSC
PIN 1
0.069 (1.75)
0.053 (1.35)
0.065 (1.65)
0.049 (1.24)
0.010 (0.25)
0.025 (0.14) 0.012 (0.30)
0.004 (0.10)
SEATING
BSC
0.008 (0.20) PLANE
COPLANARITY
0.004 (0.10)
0.010 (0.25)
0.006 (0.15)
8°
0°
0.050 (1.27)
0.016 (0.41)
COMPLIANT TO JEDEC STANDARDS MO-137AB
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETERS DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
Figure 15. 16-Lead Shrink Small Outline Package [QSOP]
(RQ-16)
Dimensions shown in inches and (millimeters)
ORDERING GUIDE
Model
ADG794BRQZ1
ADG794BRQZ-500RL71
ADG794BRQZ-REEL1
ADG794BRQZ-REEL71
1
Temperature Range
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
Package Description
16-Lead Shrink Small Outline Package (QSOP)
16-Lead Shrink Small Outline Package (QSOP)
16-Lead Shrink Small Outline Package (QSOP)
16-Lead Shrink Small Outline Package (QSOP)
Z = Pb-free part.
Rev. 0 | Page 11 of 12
Package Option
RQ-16
RQ-16
RQ-16
RQ-16
ADG794
NOTES
© 2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05150–0–10/04(0)
Rev. 0 | Page 12 of 12
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