I2C-Compatible, Wide Bandwidth,
Five 2:1 Multiplexer
ADG795A/ADG795G
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
VDD
VDD
GND
ADG795A
GND
ADG795G
S1A
S1A
D1
D1
S1B
S1B
S2A
S2A
D2
D2
S2B
S2B
TE
S3A
S3A
D3
S3B
D3
S3B
S4A
S4A
D4
S4B
D4
S4B
S5A
S5A
D5
B
SO
S-Video RGB/YPbPr video switches
HDTV
Projection TV
DVD-R/RW
AV receivers
LE
APPLICATIONS
S5B
I2C SERIAL
INTERFACE
A0
A1
D5
S5B
I2C SERIAL
INTERFACE
A0
A2 SDA SCL
A1
GPO1
A2 SDA SCL
06034-001
Bandwidth: 325 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 = 186 ns, tOFF = 177 ns
ESD protection
4 kV human body model (HBM)
200 V machine model (MM)
1 kV field-induced charged device model (FICDM)
I2C®-compatible interface
Compact 24-lead LFCSP
Figure 1.
GENERAL DESCRIPTION
The ADG795A/ADG795G are monolithic CMOS devices
comprising five 2:1 multiplexers/demultiplexers controllable via
a standard I2C serial interface. The CMOS process provides
ultralow power dissipation, yet gives high switching speed and
low on resistance.
O
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 ADG795A/ADG795G the ideal switching
solution for a wide range of TV applications including S-video,
RGB and YPbPr video switches.
The switches conduct equally well in both directions when on.
In the off condition, signal levels up to the supplies are blocked.
The ADG795A/ADG795G switches exhibit break-before-make
switching action. The ADG795G has one general-purpose logic
output pins controlled by the I2C interface that can also be used
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. It has three configurable I2C address pins
that allow up to eight devices on the same bus. This allows the
user to expand the capability of the device by increasing the size
of the switching array.
The ADG795A/ADG795G operate from a single 3 V or 5 V
supply voltage and are available in a compact 4 mm × 4 mm
body, 24-lead, lead-free package (LFCSP).
PRODUCT HIGHLIGHTS
1.
Wide bandwidth: 325 MHz.
2.
Ultralow power dissipation.
3.
Extended input signal range.
4.
Integrated I2C serial interface.
5.
Compact 4 mm × 4 mm, 24-lead, lead-free LFCSP.
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.
ADG795A/ADG795G
TABLE OF CONTENTS
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
Specifications..................................................................................... 3
LDSW bit..................................................................................... 19
I2C Timing Specifications ................................................................ 7
Power On/Software Reset.......................................................... 19
Timing Diagram ........................................................................... 8
Read Operation........................................................................... 19
Absolute Maximum Ratings............................................................ 9
Evaluation Board ............................................................................ 20
ESD Caution.................................................................................. 9
Using the ADG795G Evaluation Board .................................. 20
Pin Configuration and Function Descriptions........................... 10
Outline Dimensions ....................................................................... 23
LE
TE
Features .............................................................................................. 1
Typical Performance Characteristics ........................................... 11
Ordering Guide .......................................................................... 23
Test Circuits..................................................................................... 14
REVISION HISTORY
O
B
SO
7/06—Revision 0: Initial Version
Rev. 0 | Page 2 of 24
ADG795A/ADG795G
SPECIFICATIONS
VDD = 5 V ± 10%, GND = 0 V, TA = −40°C to +85°C, unless otherwise noted.
Table 1.
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
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
0
0
VD = 1 V, IDS = −10 mA
VD = 0 V to 1 V, IDS = −10 mA
O
Typ 1
Max
Unit
2.2
4
3.3
3.5
4
0.5
V
V
Ω
Ω
Ω
0.6
0.55
Ω
Ω
0.15
0.3
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
±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
ADG795G only
f = 10 MHz, RL = 50 Ω, see Figure 26
f = 10 MHz, RL = 50 Ω, see Figure 27
186
177
3
1
B
SO
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 INPUTS3
A0, A1, A2
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IINL or IINH
Input Capacitance, CIN
SCL, SDA
Input High Voltage, VINH
Input Low Voltage, VINL
Input Leakage Current, IIN
Input Hysteresis
Input Capacitance, CIN
Min
TE
On Resistance, RON
Conditions
LE
Parameter
ANALOG SWITCH
Analog Signal Range 2
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
250
240
ns
ns
ns
130
−60
ns
dB
−55
−70
325
0.14
5
10
13
27
70
0.32
0.44
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
Rev. 0 | Page 3 of 24
nA
nA
nA
0.8
±1
VDD + 0.3
+0.3 × VDD
±1
V
V
μA
pF
V
V
μA
V
pF
ADG795A/ADG795G
Floating-State Leakage Current
Floating-State Output Capacitance
GPO1 Pin and GPO2 Pin
Output Low Voltage, VOL
Output High Voltage, VOH
POWER REQUIREMENTS
IDD
Conditions
Min
Typ 1
ISINK = 3 mA
ISINK = 6 mA
ILOAD = +2 mA
ILOAD = −2 mA
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
Digital inputs = 0 V or VDD, I2C interface
inactive
I2C interface active, fSCL =400 kHz
I2C interface active, fSCL =3.4 MHz
0.001
TE
Parameter
LOGIC OUTPUTS3
SDA Pin
Output Low Voltage, VOL
1
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.
2
O
B
SO
LE
3
Rev. 0 | Page 4 of 24
ADG795A/ADG795G
VDD = 3 V ± 10%, GND = 0 V, TA = −40°C to +85°C, unless otherwise noted.
Table 2.
On-Resistance Matching Between
Channels, ∆RON
VS=VDD, RL=1MΩ
VS=VDD, RL=75Ω
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
0
0
VD = 1 V, IDS = −10 mA
VD = 0 V to 1 V, IDS = −10 mA
O
LOGIC INPUTS3
A0, A1, A2
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IINL or IINH
Input Capacitance, CIN
SCL, SDA
Input High Voltage, VINH
Input Low Voltage, VINL
Input Leakage Current, IIN
Input Hysteresis
Input Capacitance, CIN
Typ 1
Max
Unit
2.2
0.15
2.2
1.7
4
6
0.6
V
V
Ω
Ω
Ω
0.3
1.1
2.8
Ω
Ω
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
ADG795G only
f = 10 MHz, RL = 50 Ω, see Figure 26
f = 10 MHz, RL = 50 Ω, see Figure 27
198
195
3
1
RL = 50 Ω, see Figure 25
RL = 100 Ω
CL = 1 nF, VS = 0 V, see Figure 30
B
SO
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
Min
TE
On Resistance, RON
Conditions
LE
Parameter
ANALOG SWITCH
Analog Signal Range 2
f = 20 kHz
CCIR330 test signal
CCIR330 test signal
121
−60
−55
−70
310
0.14
2.5
10
13
27
70
0.28
0.28
0.005
3
0.7 × VDD
−0.3
0.005
0.05 × VDD
3
Rev. 0 | Page 5 of 24
ns
ns
ns
ns
dB
dB
dB
MHz
%
pC
pF
pF
pF
dB
%
Degree
s
2.0
VIN = 0 V to VDD
VIN = 0 V to VDD
270
260
nA
nA
nA
0.8
±1
VDD + 0.3
+0.3 × VDD
±1
V
V
μA
pF
V
V
μA
V
pF
ADG795A/ADG795G
Floating-State leakage Current
Floating-State Output
Capacitance
GPO1 Pin and GPO2 Pin
Output Low Voltage, VOL
Output High Voltage, VOH
POWER REQUIREMENTS
IDD
Conditions
Min
Typ 1
ISINK = 3 mA
ISINK = 6 mA
Max
Unit
0.4
0.6
±1
V
V
μA
pF
0.4
V
V
1
0.1
0.2
μA
mA
mA
3
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
0.001
TE
Parameter
LOGIC OUTPUTS3
SDA Pin
Output Low Voltage, VOL
1
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.
2
O
B
SO
LE
3
Rev. 0 | Page 6 of 24
ADG795A/ADG795G
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.
t3
t4 2
t5
t6
t7
O
t8
t9
t10
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
0
0
4.7
0.6
160
4
0.6
160
4.7
1.3
4
0.6
160
Description
Serial clock frequency
tHIGH, SCL high time
TE
t2
Min
3.45
0.9
1000
300
ns
ns
μs
μs
ns
μs
μs
ns
μs
μs
μs
μs
ns
ns
ns
20 + 0.1 CB
80
160
300
300
ns
ns
ns
ns
10
20
80
160
ns
ns
20 + 0.1 CB
10
20
tLOW, SCL low time
LE
t1
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
703
150
B
SO
Parameter 1
fSCL
Rev. 0 | Page 7 of 24
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
ADG795A/ADG795G
t12
tSP
Max
1000
300
Unit
ns
ns
40
80
1000
ns
ns
ns
20 + 0.1 CB
300
ns
10
20
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
10
20
Description
tRCL, rise time of SCL signal
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.
2
TIMING DIAGRAM
t11
t2
B
SO
SCL
t12
t6
t1
t6
t4
t5
t3
t8
t10
t9
SDA
t7
P
S
S
O
Figure 2. Timing Diagram for 2-Wire Serial Interface
Rev. 0 | Page 8 of 24
P
06034-002
1
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
TE
t11A
Conditions
Standard mode
Fast mode
High speed mode
CB = 100 pF max
CB = 400 pF max
Standard mode
LE
Parameter 1
t11
ADG795A/ADG795G
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 4.
Only one absolute maximum rating may be applied at any one
time.
−40°C to +85°C
−65°C to +150°C
150°C
30°C/W
300°C
260°C
B
SO
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
(