I2C-Compatible, Wide Bandwidth,
Triple 4:1 Multiplexer
ADG792A/ADG792G
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
VDD
VDD
GND
ADG792A
ADG792G
S1A
S1A
S1B
S1B
D1
S1C
S1D
S2A
S2A
S2B
S2B
D2
S2C
S2D
S3A
S3A
S3B
D3
S3C
D3
S3C
S3D
S3D
I2C SERIAL
INTERFACE
A0
RGB/YPbPr video switches
HDTV
Projection TV
DVD-R/RW
AV receivers
D2
S2C
S2D
S3B
D1
S1C
S1D
APPLICATIONS
GND
A1
I2C SERIAL
INTERFACE
GPO1
A2 SDA SCL
A0
A1
A2 SDA SCL
GPO2
06029-001
Bandwidth: 190 MHz
Low insertion loss and on resistance: 2.6 Ω typical
On resistance flatness: 0.3 Ω typical
Single 3 V/5 V supply operation
3.3 V analog signal range (5 V supply, 75 Ω load)
Low quiescent supply current: 1 nA typical
Fast switching times: tON 185 ns, tOFF 181 ns
I2C®-compatible interface
Compact, 24-lead, LFCSP package
Two I2C-controllable logic outputs
ESD protection
4 kV human body model
200 V machine model
1 kV field-induced charged device model
Figure 1.
GENERAL DESCRIPTION
The ADG792A/ADG792G are monolithic CMOS devices, each
comprising three 4:1 multiplexer/demultiplexers that are controllable through a standard I2C serial interface. The CMOS
process provides ultralow power dissipation yet delivers high
switching speed and low on resistance.
The on resistance profile is very flat over the full analog input
range, and wide bandwidth ensures excellent linearity and low
distortion. These features, combined with a wide input signal
range, make the ADG792A/ADG792G the ideal switching
solution for a wide range of TV applications, including RGB
and YPbPr video switches.
When turned on, the switches conduct equally well in both
directions. In the off condition, signal levels, up to the supplies,
are blocked. The ADG792A/ADG792G switches exhibit breakbefore-make switching action. The ADG792G also has two
general-purpose logic output pins controllable through the I2C
interface to control other non-I2C-compatible devices, such as
video filters. The integrated I2C interface provides a large degree
of flexibility in the system design. To build larger switching
arrays, the user can set the three I2C address pins allowing as
many as eight devices to connect to the same bus.
The ADG792A/ADG792G operate from a single 3 V or 5 V
supply voltage and is available in a compact 4 mm × 4 mm
body, 24-lead, Pb-free, LFCSP package.
PRODUCT HIGHLIGHTS
1.
Wide bandwidth: 190 MHz.
2.
Ultralow power dissipation.
3.
Extended input signal range.
4.
Integrated I2C serial interface.
5.
Compact 4 mm × 4 mm, 24-lead, Pb-free LFCSP package.
6.
ESD protection tested as per ESD Association Standards:
4 kV HBM (ANSI/ESD STM5.1-2001)
200 V MM (ANSI/ESD STM5.2-1999)
1 kV FICDM (ANSI/ESDSTM5.3.1-1999)
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: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
ADG792A/ADG792G
TABLE OF CONTENTS
Features .............................................................................................. 1
Terminology .................................................................................... 16
Applications....................................................................................... 1
Theory of Operation ...................................................................... 17
Functional Block Diagrams............................................................. 1
I2C Serial Interface ..................................................................... 17
General Description ......................................................................... 1
I2C Address.................................................................................. 17
Product Highlights ........................................................................... 1
Write Operation.......................................................................... 17
Revision History ............................................................................... 2
LDSW Bit..................................................................................... 19
Specifications..................................................................................... 3
Power On/Software Reset.......................................................... 19
I2C Timing Specifications............................................................ 7
Read Operation........................................................................... 19
Absolute Maximum Ratings............................................................ 9
Evaluation Board ............................................................................ 20
ESD Caution.................................................................................. 9
Using the ADG792G Evaluation Board .................................. 20
Pin Configurations and Function Descriptions ......................... 10
Outline Dimensions ....................................................................... 23
Typical Performance Characteristics ........................................... 11
Ordering Guide .......................................................................... 23
Test Circuits..................................................................................... 14
REVISION HISTORY
7/06—Revision 0: Initial Version
Rev. 0 | Page 2 of 24
ADG792A/ADG792G
SPECIFICATIONS
VDD = 5 V ± 10%, GND = 0 V, TA = −40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
ANALOG SWITCH
Analog Signal Range 2
On Resistance, RON
On Resistance Matching Between Channels, ∆RON
On Resistance Flatness, RFLAT(ON)
LEAKAGE CURRENTS
Source Off Leakage (IS(OFF))
Drain Off Leakage (ID(OFF))
Channel On Leakage (ID(ON), IS(ON))
DYNAMIC CHARACTERISTICS 3
tON, tENABLE
tOFF, tDISABLE
Break-Before-Make Time Delay, tD
I2C to GPO Propagation Delay, tH, tL
Off Isolation
Channel-to-Channel Crosstalk
Same Multiplexer
Different Multiplexer
−3 dB Bandwidth
THD + N
Charge Injection
CS(OFF)
CD(OFF)
CD(ON), CS(ON)
Power Supply Rejection Ratio, PSRR
Differential Gain Error
Differential Phase Error
LOGIC INPUTS (A0, A1, A2)3
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IINL or IINH
Input Capacitance, CIN
LOGIC INPUTS (SCL, SDA)3
Input High Voltage, VINH
Input Low Voltage, VINL
Input Leakage Current, IIN
Input Hysteresis
Input Capacitance, CIN
Conditions
Min
VS = VDD, RL = 1 MΩ
VS = VDD, RL = 75 Ω
VD = 0 V, IDS = −10 mA, see Figure 22
VD = 0 V to 1 V, IDS = −10 mA, see
Figure 22
VD = 0 V IDS = −10 mA
VD = 1 V IDS = −10 mA
VD = 0 V to 1 V, IDS = −10 mA
0
0
Typ 1
2.6
0.15
0.3
Max
Unit
4
3.3
3.5
4
V
V
Ω
Ω
0.5
0.6
0.55
Ω
Ω
Ω
VD = 4 V/1 V, VS = 1 V/4 V, see
Figure 23
VD = 4 V/1 V, VS = 1 V/4 V, see
Figure 23
VD = VS = 4 V/1 V, see Figure 24
±0.25
nA
±0.25
nA
±0.25
nA
CL = 35 pF, RL = 50 Ω, VS = 2 V, see
Figure 28
CL = 35 pF, RL = 50 Ω, VS = 2 V, see
Figure 28
CL = 35 pF, RL = 50 Ω, VS1 = VS2 = 2 V,
see Figure 29
ADG792G only
f = 10 MHz, RL = 50 Ω, see Figure 26
f = 10 MHz, RL = 50 Ω, see Figure 27
185
240
ns
181
235
ns
1
3
ns
130
RL = 50 Ω, see Figure 25
RL = 100 Ω
CL = 1 nF, VS = 0 V, see Figure 30
f = 20 kHz
CCIR330 test signal
CCIR330 test signal
−60
ns
dB
−55
−75
190
0.14
5
10
26
37
70
0.58
0.81
dB
dB
MHz
%
pC
pF
pF
pF
dB
%
Degrees
2.0
VIN = 0 V to VDD
0.005
3
0.7 × VDD
−0.3
VIN = 0 V to VDD
Rev. 0 | Page 3 of 24
+0.005
0.05 × VDD
3
0.8
±1
VDD + 0.3
+0.3 × VDD
±1
V
V
μA
pF
V
V
μA
V
pF
ADG792A/ADG792G
Parameter
LOGIC OUTPUTS3
SDA Pin
Output Low Voltage, VOL
Floating State Leakage Current
Floating State Output Capacitance
GPO1 and GPO2 Pins
Output Low Voltage, VOL
Output High Voltage, VOH
POWER REQUIREMENTS
IDD
1
2
3
Conditions
Min
Typ1
ISINK = 3 mA
ISINK = 6 mA
ILOAD = +2 mA
ILOAD = −2 mA
Digital inputs = 0 V or VDD, I2C interface
inactive
I2C interface active, fSCL = 400 kHz
I2C interface active, fSCL = 3.4 MHz
All typical values are at TA = +25°C, unless otherwise stated.
Guaranteed by initial characterization, not subject to production test.
Guaranteed by design, not subject to production test.
Rev. 0 | Page 4 of 24
Max
Unit
0.4
0.6
±1
10
V
V
μA
pF
0.4
V
V
1
μA
0.2
0.7
mA
mA
2.0
0.001
ADG792A/ADG792G
VDD = 3 V ± 10%, GND = 0 V, TA = −40°C to +85°C, unless otherwise noted.
Table 2.
Parameter
ANALOG SWITCH
Analog Signal Range2
On Resistance, RON
On Resistance Matching Between Channels, ∆RON
On Resistance Flatness, RFLAT(ON)
LEAKAGE CURRENTS
Source Off Leakage (IS(OFF))
Drain Off Leakage (ID(OFF))
Channel On Leakage (ID(ON), IS(ON))
DYNAMIC CHARACTERISTICS3
tON, tENABLE
tOFF, tDISABLE
Break-Before-Make Time Delay, tD
I2C to GPO propagation delay, tH, tL
Off Isolation
Channel-to-Channel Crosstalk
Same Multiplexer
Different Multiplexer
−3 dB Bandwidth
THD + N
Charge Injection
CS(OFF)
CD(OFF)
CD(ON), CS(ON)
Power Supply Rejection Ratio, PSRR
Differential Gain Error
Differential Phase Error
LOGIC INPUTS (A0, A1, A2)3
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IINL or IINH
Input Capacitance, CIN
LOGIC INPUTS (SCL, SDA)3
Input High Voltage, VINH
Input Low Voltage, VINL
Input Leakage Current, IIN
Input Hysteresis
Input Capacitance, CIN
LOGIC OUTPUTS3
SDA Pin
Output Low Voltage, VOL
Conditions
Min
VS = VDD, RL = 1 MΩ
VS = VDD, RL = 75 Ω
VD = 0 V, IS = −10 mA, see Figure 22
VD = 0 V to 1 V, IS = −10 mA, see Figure 22
VD = 0 V IS = −10 mA
VD = 1 V IS = −10 mA
VD = 0 V to 1 V, IS = −10 mA
0
0
Typ1
3
0.15
0.8
VD = 2 V/1 V, VS = 1 V/2 V, see Figure 23
VD = 2 V/1 V, VS = 1 V/2 V, see Figure 23
VD = VS = 2 V/1 V, see Figure 24
±0.25
±0.25
±0.25
CL = 35 pF, RL = 50 Ω, VS = 2 V, see Figure 28
CL = 35 pF, RL = 50 Ω, VS = 2 V, see Figure 28
CL = 35 pF, RL = 50 Ω, VS1 = VS2 = 2 V,
see Figure 29
ADG792G only
f = 10 MHz, RL = 50 Ω, see Figure 26
f = 10 MHz, RL = 50 Ω, see Figure 27
200
197
3
1
RL = 50 Ω, see Figure 25
RL = 100 Ω
CL = 1 nF, VS = 0 V, see Figure 30
f = 20 kHz
CCIR330 test signal
CCIR330 test signal
Max
Units
2.2
1.7
4
6
0.6
0.8
2.8
V
V
Ω
Ω
Ω
Ω
Ω
nA
nA
nA
260
255
ns
ns
ns
121
−60
ns
dB
−55
−75
180
0.14
3.5
10
26
37
70
0.49
0.56
dB
dB
MHz
%
pC
pF
pF
pF
dB
%
Degrees
2.0
VIN = 0 V to VDD
+0.005
3
0.7 × VDD
−0.3
VIN = 0 V to VDD
+0.005
0.05 × VDD
3
ISINK = 3 mA
ISINK = 6 mA
Floating State leakage Current
Floating State Output Capacitance
3
Rev. 0 | Page 5 of 24
0.8
±1
V
V
μA
pF
VDD + 0.3
+0.3 × VDD
±1
V
V
μA
V
pF
0.4
0.6
±1
V
V
μA
pF
ADG792A/ADG792G
Parameter
GPO1 and GPO2 Pins
Output Low Voltage, VOL
Output High Voltage, VOH
POWER REQUIREMENTS
IDD
Conditions
Min
ILOAD = +2 mA
ILOAD = −2 mA
2.0
Digital inputs = 0 V or VDD,
I2C interface inactive
I2C interface active, fSCL = 400 kHz
I2C interface active, fSCL = 3.4 MHz
1
All typical values are at TA = +25°C, unless otherwise stated.
Guaranteed by initial characterization, not subject to production test.
3
Guaranteed by design, not subject to production test.
2
Rev. 0 | Page 6 of 24
Typ1
0.001
Max
Units
0.4
V
V
1
μA
0.1
0.2
mA
mA
ADG792A/ADG792G
I2C TIMING SPECIFICATIONS
VDD = 2.7 V to 5.5 V; GND = 0 V; TA = −40°C to +85°C, unless otherwise noted. See Figure 2 for timing diagram.
Table 3.
Parameter 1
fSCL
t1
t2
t3
t4 2
t5
t6
t7
t8
t9
t10
t11
Conditions
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Min
Max
100
400
Unit
kHz
kHz
3.4
1.7
4
0.6
MHz
MHz
μs
μs
60
120
4.7
1.3
ns
ns
μs
μs
160
320
250
100
10
0
0
ns
ns
ns
ns
ns
μs
μs
3.45
0.9
0
0
4.7
0.6
160
4
0.6
160
4.7
1.3
4
0.6
160
703
150
1000
300
ns
ns
μs
μs
ns
μs
μs
ns
μs
μs
μs
μs
ns
ns
ns
80
160
300
300
ns
ns
ns
ns
20 + 0.1 CB
80
160
1000
300
ns
ns
ns
ns
10
20
40
80
ns
ns
20 + 0.1 CB
B
10
20
20 + 0.1 CB
B
10
20
B
Description
Serial clock frequency
tHIGH, SCL high time
tLOW, SCL low time
tSU;DAT, data setup time
tHD;DAT, data hold time
tSU;STA, setup time for a repeated start condition
tHD;STA, hold time (repeated) start condition
tBUF, bus free time between a stop and a start condition
tSU;STO, setup time for stop condition
tRDA, rise time of SDA signal
tFDA, fall time of SDA signal
tRCL, rise time of SCL signal
Rev. 0 | Page 7 of 24
ADG792A/ADG792G
Parameter 1
t11A
t12
tSP
1
2
Conditions
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Fast mode
High speed mode
Min
Max
1000
300
Unit
ns
ns
20 + 0.1 CB
80
160
300
300
ns
ns
ns
ns
10
20
0
0
40
80
50
10
ns
ns
ns
ns
20 + 0.1 CB
B
10
20
B
Description
tRCL1, rise time of SCL signal after a repeated start condition and after
an acknowledge bit
tFCL, fall time of SCL signal
Pulse width of suppressed spike
Guaranteed by initial characterization. CB refers to capacitive load on the bus line, tr and tf measured between 0.3 VDD and 0.7 VDD.
A device must provide a data hold time for SDA in order to bridge the undefined region of the SCL falling edge.
Timing Diagram
t11
t2
SCL
t12
t6
t1
t6
t4
t5
t3
t8
t10
t9
t7
P
S
S
Figure 2. Timing Diagram for 2-Wire Serial Interface
Rev. 0 | Page 8 of 24
P
06029-002
SDA
ADG792A/ADG792G
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 4.
Parameter
VDD to GND
Analog, Digital Inputs
Continuous Current, S or D Pins
Peak Current, S or D Pins
Operating Temperature Range
Industrial (B Version)
Storage Temperature Range
Junction Temperature
θJA Thermal Impedance
24-Lead LFCSP
Lead Temperature, Soldering
(10 sec)
IR Reflow, Peak Temperature
(