TI OPA3355 200mhz, cmos operational amplifier with shutdown Datasheet

OPA355
OPA2355
OPA3355
OPA
355
OPA2
355
OPA
335
5
®
OPA
33 5
5
SBOS195D – MARCH 2001 – REVISED JANUARY 2004
200MHz, CMOS
OPERATIONAL AMPLIFIER WITH SHUTDOWN
FEATURES
DESCRIPTION
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The OPA355 series high-speed, voltage-feedback CMOS
operational amplifiers are designed for video and other
applications requiring wide bandwidth. The OPA355 is unitygain stable and can drive large output currents. In addition,
the OPA355 has a digital shutdown (Enable) function. This
feature provides power savings during idle periods and
places the output in a high-impedance state to support output
multiplexing. Differential gain is 0.02% and differential phase
is 0.05°. Quiescent current is only 8.3mA per channel.
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UNITY-GAIN BANDWIDTH: 450MHz
WIDE BANDWIDTH: 200MHz GBW
HIGH SLEW RATE: 360V/µs
LOW NOISE: 5.8nV/√Hz
EXCELLENT VIDEO PERFORMANCE:
DIFF GAIN: 0.02%, DIFF PHASE: 0.05°
0.1dB GAIN FLATNESS: 75MHz
INPUT RANGE INCLUDES GROUND
RAIL-TO-RAIL OUTPUT (within 100mV)
LOW INPUT BIAS CURRENT: 3pA
LOW SHUTDOWN CURRENT: 3.4µA
ENABLE/DISABLE TIME: 100ns/30ns
THERMAL SHUTDOWN
SINGLE-SUPPLY OPERATING RANGE: 2.5V to 5.5V
MicroSIZE PACKAGES
APPLICATIONS
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VIDEO PROCESSING
ULTRASOUND
OPTICAL NETWORKING, TUNABLE LASERS
PHOTODIODE TRANSIMPEDANCE AMPS
ACTIVE FILTERS
HIGH-SPEED INTEGRATORS
ANALOG-TO-DIGITAL (A/D) CONVERTER
INPUT BUFFERS
● DIGITAL-TO-ANALOG (D/A) CONVERTER
OUTPUT AMPLIFIERS
● BARCODE SCANNERS
● COMMUNICATIONS
The OPA355 is optimized for operation on single or dual
supplies as low as 2.5V (±1.25V) and up to 5.5V (±2.75V).
Common-mode input range for the OPA355 extends 100mV
below ground and up to 1.5V from V+. The output swing is
within 100mV of the rails, supporting wide dynamic range.
The OPA355 series is available in single (SOT23-6 and
SO-8), dual (MSOP-10), and triple (TSSOP-14 and SO-14)
versions. Multichannel versions feature completely independent circuitry for lowest crosstalk and freedom from interaction. All are specified over the extended –40°C to +125°C
range.
OPA355 RELATED PRODUCTS
FEATURES
PRODUCT
200MHz, Rail-to-Rail Output, CMOS, No Shutdown
38MHz, Rail-to-Rail Input/Output, CMOS
75MHz, Rail-to-Rail Output
150MHz, Rail-to-Rail Output
Differential Input/Output, 3.3V Supply
OPA356
OPAx350
OPAx631
OPAx634
THS412x
V+
–VIN
OPA355
Out
+VIN
V– Enable
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
Copyright © 2001-2004, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage, V+ to V– ................................................................... 7.5V
Signal Input Terminals, Voltage(2) .................... (V–) – 0.5V to (V+) + 0.5V
Current(2) ..................................................... 10mA
Enable Input ...................................................... (V–) – 0.5V to (V+) + 0.5V
Output Short-Circuit(3) .............................................................. Continuous
Operating Temperature .................................................. –55°C to +150°C
Storage Temperature ...................................................... –65°C to +150°C
Junction Temperature .................................................................... +160°C
Lead Temperature (soldering, 10s) ............................................... +300°C
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. These are stress ratings only, and functional operation of the
device at these or any other conditions beyond those specified is not implied.
(2) Input terminals are diode-clamped to the power-supply rails. Input signals
that can swing more than 0.5V beyond the supply rails should be current limited
to 10mA or less. (3) Short-circuit to ground, one amplifier per package.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.
PACKAGE/ORDERING INFORMATION(1)
PRODUCT
OPA355
PACKAGE-LEAD
PACKAGE
MARKING
SOT23-6
C55
"
OPA355
"
OPA2355
"
SO-8
OPA355UA
"
"
MSOP-10
D55
"
"
TSSOP-14
OPA3355EA
"
OPA3355
"
"
OPA3355
"
"
"
SO-14
OPA3355UA
"
"
NOTE: (1) For the most current package and ordering information, see the
Package Option Addendum located at the end of this data sheet.
PIN CONFIGURATIONS
Top View
OPA355
OPA355
C55
6
V+
V– 2
5
+In 3
4
Out 1
NC(2)
1
8
Enable
Enable
–In
2
7
V+
–In
+In
3
6
Out
V–
4
5
NC(2)
SOT23-6(1)
NOTES: (1) Pin 1 of the SOT23-6 is
determined by orienting the package marking
as indicated in the diagram. (2) NC indicates
no internal connection.
SO-8
OPA3355
OPA2355
Out A
1
–In A
2
10 V+
9
Out B
Enable A
1
Enable B
2
Out C
13
–In C
C
A
+In A
14
3
8
–In B
Enable C
3
12
+In C
V+
4
11
V–
+In A
5
10
+In B
B
V–
4
7
+In B
Enable A
5
6
Enable B
A
MSOP-10
B
–In A
6
9
–In B
Out A
7
8
Out B
SO-14
TSSOP-14
2
OPA355, 2355, 3355
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SBOS195D
ELECTRICAL CHARACTERISTICS: VS = +2.7V to +5.5V Single-Supply
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.
At TA = +25°C, RF = 604Ω, RL = 150Ω, and connected to VS/2, unless otherwise noted.
PARAMETER
CONDITION
OFFSET VOLTAGE
Input Offset Voltage
VOS
vs Temperature
vs Power Supply
MIN
OPA355
OPA2355
OPA3355
TYP
±2
UNITS
±9
±7
±80
±350
mV
mV
µV/°C
µV/V
IB
3
±50
pA
IOS
±1
±50
pA
dVOS/dT
PSRR
VS = +5V
Specified Temperature Range
Specified Temperature Range
VS = +2.7V to +5.5V, VCM = VS/2 – 0.15V
MAX
±15
INPUT BIAS CURRENT
Input Bias Current
Input Offset Current
NOISE
Input Noise Voltage Density
Current Noise Density
en
f = 1MHz
5.8
in
f = 1MHz
50
nV/ √Hz
fA/ √Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
VCM
Common-Mode Rejection Ratio
CMRR
(V–) – 0.1
VS = +5.5V, –0.1V < VCM < +4.0V
66
Specified Temperature Range
66
(V+) – 1.5
80
V
dB
dB
INPUT IMPEDANCE
Differential
1013 || 1.5
Ω || pF
Common-Mode
1013 || 1.5
Ω || pF
VS = +5V, 0.3V < VO < 4.7V
84
OPA355
VS = +5V, 0.3V < VO < 4.7V
80
dB
OPA2355, OPA3355
VS = +5V, 0.4V < VO < 4.6V
80
dB
OPEN-LOOP GAIN
92
dB
FREQUENCY RESPONSE
Small-Signal Bandwidth
f–3dB
G = +1, VO = 100mVp-p, RF = 0Ω
450
MHz
f–3dB
G = +2, VO = 100mVp-p, RL = 50Ω
100
MHz
f–3dB
G = +2, VO = 100mVp-p, RL = 150Ω
170
MHz
f–3dB
G = +2, VO = 100mVp-p, RL = 1kΩ
200
MHz
Gain-Bandwidth Product
GBW
G = +10, RL = 1kΩ
200
MHz
Bandwidth for 0.1dB Gain Flatness
f0.1dB
G = +2, VO = 100mVp-p, RF = 560Ω
75
MHz
V/µs
Slew Rate
SR
Rise-and-Fall Time
Settling Time, 0.1%
VS = +5V, G = +2, 4V Output Step
300/–360
G = +2, VO = 200mVp-p, 10% to 90%
2.4
ns
G = +2, VO = 2Vp-p, 10% to 90%
8
ns
VS = +5V, G = +2, 2V Output Step
30
ns
VS = +5V, G = +2, 2V Output Step
120
ns
VIN • Gain = VS
8
ns
2nd-Harmonic
G = +2, f = 1MHz, VO = 2Vp-p, RL = 200Ω
–81
dBc
3rd-Harmonic
G = +2, f = 1MHz, VO = 2Vp-p, RL = 200Ω
–93
dBc
Differential Gain Error
NTSC, RL = 150Ω
0.02
%
Differential Phase Error
NTSC, RL = 150Ω
0.05
degrees
OPA2355
f = 5MHz
–90
dB
OPA3355
f = 5MHz
–70
dB
0.01%
Overload Recovery Time
Harmonic Distortion
Channel-to-Channel Crosstalk
OUTPUT
Voltage Output Swing from Rail
VS = +5V, RL = 150Ω, AOL > 84dB
0.2
Voltage Output Swing from Rail
VS = +5V, RL = 1kΩ
0.1
V
±60
mA
0.3
V
Output Current, Continuous(1)
IO
Output Current, Peak(1)
IO
VS = +5V
±100
mA
Output Current, Peak(1)
IO
VS = +3V
±80
mA
f < 100kHz
0.02
Ω
Closed-Loop Output Impedance
POWER SUPPLY
Specified Voltage Range
2.7
VS
Operating Voltage Range
Quiescent Current (per amplifier)
5.5
V
11
mA
14
mA
2.5 to 5.5
IQ
VS = +5V, Enabled, IO = 0
Specified Temperature Range
8.3
V
NOTES: (1) See typical characteristic Output Voltage Swing vs Output Current. (2) Logic LOW and HIGH levels are CMOS logic compatible. They are referenced to V–.
OPA355, 2355, 3355
SBOS195D
www.ti.com
3
ELECTRICAL CHARACTERISTICS: VS = +2.7V to +5.5V Single-Supply (Cont.)
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.
At TA = +25°C, RF = 604Ω, RL = 150Ω, and connected to VS/2, unless otherwise noted.
PARAMETER
CONDITION
MIN
OPA355
OPA2355
OPA3355
TYP
MAX
UNITS
0.8
V
SHUTDOWN
Disabled (Logic-LOW Threshold)(2)
Enabled (Logic-HIGH Threshold)(2)
2
Enable Time
V
100
Disable Time
ns
30
Shutdown Current (per amplifier)
VS = +5V, Disabled
3.4
ns
6
µA
THERMAL SHUTDOWN
Junction Temperature
Shutdown
160
°C
Reset from Shutdown
140
°C
TEMPERATURE RANGE
Specified Range
–40
125
°C
Operating Range
–55
150
°C
–65
150
Storage Range
Thermal Resistance
θJA
°C
°C/W
SOT-23-6, MSOP-10
150
°C/W
SO-8
125
°C/W
SO-14, TSSOP-14
100
°C/W
NOTES: (1) See typical characteristic Output Voltage Swing vs Output Current. (2) Logic LOW and HIGH levels are CMOS logic compatible. They are referenced to V–.
4
OPA355, 2355, 3355
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SBOS195D
TYPICAL CHARACTERISTICS
At TA = +25°C, VS = 5V, G = +2, RF = 604Ω, and RL = 150Ω connected to VS/2, unless otherwise noted.
NONINVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
INVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
6
3
VO = 0.1Vp-p
0
Normalized Gain (dB)
3
Normalized Gain (dB)
VO = 0.1Vp-p
G = +1
RF = 0
0
–3
G = +2
–6
G = +5
–9
G = +10
1M
10M
Frequency (Hz)
–3
G = –5
–6
G = –10
–9
100M
–15
100k
1G
NON-INVERTING SMALL-SIGNAL
STEP RESPONSE
0.1dB GAIN FLATNESS FOR VARIOUS RF
0.5
4.5
2.5
1.5
Normalized Gain (dB)
3.5
VO = 0.1Vp-p
CL = 0pF
0.4
Disable Voltage (V)
Output Voltage (500mV/div)
1G
Time (20ns/div)
LARGE-SIGNAL DISABLE/ENABLE
RESPONSE
Disabled
100M
G = +2
Time (20ns/div)
fIN = 5MHz
10M
Frequency (Hz)
Output Voltage (500mV/div)
Output Voltage (50mV/div)
1M
NONINVERTING LARGE-SIGNAL
STEP RESPONSE
G = +2
Enabled
G = –2
–12
–12
–15
100k
G = –1
RF = 604Ω
0.3
0.2
0.1
0
–0.1
RF = 560Ω
–0.2
–0.3
VOUT
0.5
RF = 500Ω
–0.4
–0.5
Time (200ns/div)
1
OPA355, 2355, 3355
SBOS195D
www.ti.com
10
Frequency (MHz)
100
5
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VS = 5V, G = +2, RF = 604Ω, and RL = 150Ω connected to VS/2, unless otherwise noted.
HARMONIC DISTORTION vs OUTPUT VOLTAGE
HARMONIC DISTORTION vs NONINVERTING GAIN
–50
f = 1MHz
RL = 200Ω
–60
Harmonic Distortion (dBc)
Harmonic Distortion (dBc)
–50
–70
2nd Harmonic
–80
3rd Harmonic
–90
–100
VO = 2Vp-p
f = 1MHz
RL = 200Ω
–60
–70
2nd-Harmonic
–80
3rd-Harmonic
–90
–100
0
1
2
Output Voltage (Vp-p)
3
4
1
10
Gain (V/V)
HARMONIC DISTORTION vs INVERTING GAIN
HARMONIC DISTORTION vs FREQUENCY
–50
VO = 2Vp-p
f = 1MHz
RL = 200Ω
–60
Harmonic Distortion (dBc)
Harmonic Distortion (dBc)
–50
–70
2nd-Harmonic
–80
3rd-Harmonic
–90
–100
–80
3rd-Harmonic
–90
1M
Frequency (Hz)
HARMONIC DISTORTION vs LOAD RESISTANCE
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
VO = 2Vp-p
f = 1MHz
Harmonic Distortion (dBc)
–70
Gain (V/V)
–50
–60
–70
–80
2nd-Harmonic
–90
3rd-Harmonic
–100
100
1k
RL (Ω)
6
2nd-Harmonic
–100
100k
10
Voltage Noise (nV/√Hz), Current Noise (fA/√Hz)
1
–60
VO = 2Vp-p
RL = 200Ω
10M
10k
1k
Voltage Noise
Current Noise
100
10
1
10
100
1k
10k
100k
1M
10M
100M
Frequency (Hz)
OPA355, 2355, 3355
www.ti.com
SBOS195D
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VS = 5V, G = +2, RF = 604Ω, and RL = 150Ω connected to VS/2, unless otherwise noted.
FREQUENCY RESPONSE FOR VARIOUS RL
FREQUENCY RESPONSE FOR VARIOUS CL
3
9
RL = 10kΩ
6
Normalized Gain (dB)
Normalized Gain (dB)
0
CL = 0pF
VO = 0.1Vp-p
–3
RL = 50Ω
–6
RL = 150Ω
–9
RL = 1kΩ
–12
0
–3
CL = 5.6pF
–6
–9
1M
10M
Frequency (Hz)
100M
–15
100k
1G
RECOMMENDED RS vs CAPACITIVE LOAD
100
0
Normalized Gain (dB)
3
80
60
VIN
RS
VO
OPA355
40
CL
1kΩ
604Ω
20
10M
Frequency (Hz)
100M
1G
G = +2
VO = 0.1Vp-p
–3
–6
0
CL = 5.6pF
RS = 80Ω
CL = 100pF
RS = 24Ω
VIN
RS
VO
OPA355
CL
–9
CL = 47pF
RS = 36Ω
1kΩ
604Ω
–12
(1kΩ is
Optional)
604Ω
1M
FREQUENCY RESPONSE vs CAPACITIVE LOAD
120
RS (Ω)
CL = 47pF
3
–12
–15
100k
(1kΩ is
Optional)
604Ω
–15
1
10
Capacitive Load (pF)
100
1M
10M
100M
Frequency (Hz)
COMMON-MODE REJECTION RATIO AND
POWER-SUPPLY REJECTION RATIO vs FREQUENCY
1G
OPEN-LOOP GAIN AND PHASE
180
100
160
90
Open-Loop Phase (degrees)
Open-Loop Gain (dB)
–PSRR
80
CMRR, PSRR (dB)
CL = 100pF
RS = 0Ω
VO = 0.1Vp-p
+PSRR
70
60
CMRR
50
40
30
20
140
120
Phase
100
80
60
Gain
40
20
RL = 1kΩ
RL = 150kΩ
0
10
–20
0
10k
100k
1M
10M
Frequency (Hz)
100M
1k
1G
OPA355, 2355, 3355
SBOS195D
www.ti.com
10k
100k
1M
10M
Frequency (Hz)
100M
1G
7
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VS = 5V, G = +2, RF = 604Ω, and RL = 150Ω connected to VS/2, unless otherwise noted.
COMPOSITE VIDEO
DIFFERENTIAL GAIN AND PHASE
INPUT BIAS CURRENT vs TEMPERATURE
0.40
10n
Input Bias Current (pA)
dG/dP (%/degrees)
0.35
0.30
0.25
0.20
dP
0.15
0.10
1n
100
10
dG
0.05
0
1
1
2
3
Number of 150Ω Loads
4
–55
–35
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
FOR VS = 3V
85
105 125 135
12
Supply Current (mA)
–55°C
Output Voltage (V)
25
45
65
Temperature (°C)
14
25°C
2
125°C
Continuous currents above
60mA are not recommended.
125°C
1
VS = 5.5V
10
8
6
VS = 2.5V
VS = 3V
4
VS = 5V
–55°C
25°C
2
0
0
0
30
60
90
Output Current (mA)
120
150
–55
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
FOR VS = 5V
–35
–15
5
25
45
65
Temperature (°C)
25°C
Shutdown Current (µA)
125°C
Continuous currents above
60mA are not recommended.
2
125°C
1
–55°C
25°C
105 125 135
VS = 5.5V
4.0
–55°C
4
3
85
SHUTDOWN CURRENT vs TEMPERATURE
4.5
5
Output Voltage (V)
5
SUPPLY CURRENT vs TEMPERATURE
3
3.5
VS = 5V
3.0
2.5
2.0
1.5
VS = 3V
1.0
VS = 2.5V
0.5
0
0
0
8
–15
50
100
150
Output Current (mA)
200
–55
250
–35
–15
5
25
45
65
Temperature (°C)
85
105 125 135
OPA355, 2355, 3355
www.ti.com
SBOS195D
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VS = 5V, G = +2, RF = 604Ω, and RL = 150Ω connected to VS/2, unless otherwise noted.
CLOSED-LOOP OUTPUT IMPEDANCE vs FREQUENCY
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
100
6
10
5
Output Voltage (Vp-p)
Output Impedance (Ω)
VS = 5.5V
1
OPA355
0.1
ZO
604Ω
0.01
Maximum Output
Voltage without
Slew-Rate
Induced Distortion
4
3
VS = 2.7V
2
1
604Ω
0.001
0
10k
100k
1M
10M
Frequency (Hz)
100M
1G
1
10
Frequency (MHz)
OPEN-LOOP GAIN vs TEMPERATURE
OUTPUT SETTLING TIME TO 0.1%
110
0.2
VO = 2Vp-p
RL = 1kΩ
100
Open-Loop Gain (dB)
Output Error (%)
0.1
0
–0.1
–0.2
90
RL = 150Ω
80
70
–0.3
60
–0.4
0
5
10
15
20 25
30
Time (ns)
35
40
45
–55
50
–35
–15
5
25
45
65
Temperature (°C)
85
105 125 135
COMMON-MODE REJECTION RATIO AND
POWER-SUPPLY REJECTION RATIO vs TEMPERATURE
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
100
20
18
Power-Supply Rejection Ratio
90
16
CMRR, PSRR (dB)
Percent of Amplifiers (%)
100
14
12
10
8
6
80
Common-Mode Rejection Ratio
70
60
4
2
50
0
–55
–9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9
Offset Voltage (mV)
OPA355, 2355, 3355
SBOS195D
www.ti.com
–35
–15
5
25
45
65
Temperature (°C)
85
105 125 135
9
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VS = 5V, G = +2, RF = 604Ω, and RL = 150Ω connected to VS/2, unless otherwise noted.
CHANNEL-TO-CHANNEL CROSSTALK
Crosstalk, Input-Referred (dB)
0
–20
–40
OPA3355
(triple)
–60
–80
OPA2355
(dual)
–100
–120
100k
1M
10M
100M
Frequency (Hz)
APPLICATIONS INFORMATION
The OPA355 series is a CMOS, high-speed, voltage-feedback, operational amplifier designed for video and other
general-purpose applications. It is available as a single, dual,
or triple op amp.
The amplifier features a 200MHz gain bandwidth and
360V/µs slew rate, but it is unity-gain stable and can be
operated as a +1V/V voltage follower.
Its input common-mode voltage range includes ground, allowing the OPA355 to be used in virtually any single-supply
application up to a supply voltage of +5.5V.
PCB LAYOUT
Good high-frequency PC board layout techniques should be
employed for the OPA355. Generous use of ground planes,
short direct signal traces, and a suitable bypass capacitor
located at the V+ pin will assure clean, stable operation.
Large areas of copper also provide a means of dissipating
heat that is generated within the amplifier in normal operation.
Sockets are definitely not recommended for use with any
high-speed amplifier.
A 10nF ceramic bypass capacitor is the minimum recommended value; adding a 1µF or larger tantalum capacitor in
10
parallel can be beneficial when driving a low-resistance load.
Providing adequate bypass capacitance is essential to achieving very low harmonic and intermodulation distortion.
OPERATING VOLTAGE
The OPA355 is specified over a power-supply range of +2.7V
to +5.5V (±1.35V to ±2.75V). However, the supply voltage
may range from +2.5V to +5.5V (±1.25V to ±2.75V). Supply
voltages higher than 7.5V (absolute maximum) can permanently damage the amplifier.
Parameters that vary significantly over supply voltage or
temperature are shown in the Typical Characteristics section
of this data sheet.
ENABLE FUNCTION
The OPA355 can be enabled by applying a TTL HIGH
voltage level to the Enable pin. Conversely, a TTL LOW
voltage level will disable the amplifier, reducing its supply
current from 8.3mA to only 3.4µA per amplifier. This pin
voltage is referenced to single-supply ground. When using a
split-supply, such as ±2.5V, the enable/disable voltage levels
will be referenced to V–. Independent Enable pins are
available for each channel, providing maximum design flexibility. For portable battery-operated applications, this feature
can be used to greatly reduce the average current and
thereby extend battery life.
OPA355, 2355, 3355
www.ti.com
SBOS195D
The Enable input can be modeled as a CMOS input gate with
a 100kΩ pull-up resistor to V+. Left open, the Enable pin will
assume a logic HIGH, and the amplifier will be on.
driver. A properly back-terminated 75Ω cable does not appear as capacitance; it presents only a 150Ω resistive load to
the OPA355 output.
The Enable time is 100ns and the disable time is only 30ns.
This allows the OPA355 to be operated as a “gated” amplifier,
or to have its output multiplexed onto a common output bus.
When disabled, the output assumes a high-impedance state.
The OPA355 can be used as an amplifier for RGB graphic
signals, which have a voltage of zero at the video black
level, by offsetting and AC-coupling the signal, as shown in
Figure 1.
OUTPUT DRIVE
WIDEBAND VIDEO MULTIPLEXING
The output stage can supply high short-circuit current (typically over 200mA). Therefore, an on-chip thermal shutdown
circuit is provided to protect the OPA355 from dangerously
high junction temperatures. At 160°C, the protection circuit
will shut down the amplifier. Normal operation will resume
when the junction temperature cools to below 140°C.
One common application for video speed amplifiers which
include an enable pin is to wire multiple amplifier outputs
together, then select which one of several possible video
inputs to source onto a single line. This simple Wired-OR
Video Multiplexer can be easily implemented using the
OPA357; see Figure 2.
NOTE: it is not recommended to run a continuous DC current
in excess of ±60mA. Refer to the Typical Characteristics,
Output Voltage Swing vs Output Current.
INPUT AND ESD PROTECTION
VIDEO
The OPA355 output stage is capable of driving a standard
back-terminated 75Ω video cable. By back-terminating a
transmission line, it does not exhibit a capacitive load to its
All OPA355 pins are static protected with internal ESD
protection diodes tied to the supplies; see Figure 3.
These diodes will provide overdrive protection if the current
is externally limited to 10mA by the source or by a resistor.
604Ω
+3V
+
V+
1µF
10nF
604Ω
220µF
1/3
OPA355
R1
75Ω
Red(1)
Red
75Ω
R2
604Ω
V+
604Ω
220µF
1/3
OPA355
R1
75Ω
Green(1)
Green
75Ω
R2
604Ω
V+
604Ω
R1
220µF
1/3
OPA355
Blue(1)
75Ω
Blue
75Ω
R2
NOTE: (1) Source video signal offset 300mV above ground
to accommodate op amp swing-to-ground capability.
FIGURE 1. RGB Cable Driver.
OPA355, 2355, 3355
SBOS195D
www.ti.com
11
+2.5V
+
49.9Ω
Signal #1
1µF
10nF
1µF
10nF
A
OPA355
+
–2.5V
1kΩ
49.9Ω
VOUT
1kΩ
49.9Ω
+2.5V
+
49.9Ω
Signal #2
1µF
10nF
1µF
10nF
B
OPA355
+
–2.5V
1kΩ
1kΩ
HCO4
BON
Select
AON
FIGURE 2. Multiplexed Output.
+V CC
External
Pin
Internal
Circuitry
–V CC
FIGURE 3. Internal ESD Protection.
12
OPA355, 2355, 3355
www.ti.com
SBOS195D
PACKAGE OPTION ADDENDUM
www.ti.com
19-Nov-2012
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package Qty
Drawing
Eco Plan
Lead/Ball Finish
(2)
MSL Peak Temp
Samples
(3)
(Requires Login)
OPA2355DGSA/250
ACTIVE
VSSOP
DGS
10
250
Green (RoHS CU NIPDAUAG Level-2-260C-1 YEAR
& no Sb/Br)
OPA2355DGSA/250G4
ACTIVE
VSSOP
DGS
10
250
Green (RoHS CU NIPDAUAG Level-2-260C-1 YEAR
& no Sb/Br)
OPA3355EA/250
ACTIVE
TSSOP
PW
14
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA3355EA/250G4
ACTIVE
TSSOP
PW
14
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA3355EA/2K5
ACTIVE
TSSOP
PW
14
2500
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA3355EA/2K5G4
ACTIVE
TSSOP
PW
14
2500
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA3355UA
ACTIVE
SOIC
D
14
50
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA3355UAG4
ACTIVE
SOIC
D
14
50
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA355NA/250
ACTIVE
SOT-23
DBV
6
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA355NA/250G4
ACTIVE
SOT-23
DBV
6
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA355NA/3K
ACTIVE
SOT-23
DBV
6
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA355NA/3KG4
ACTIVE
SOT-23
DBV
6
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA355UA
ACTIVE
SOIC
D
8
75
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA355UA/2K5
ACTIVE
SOIC
D
8
2500
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA355UA/2K5G4
ACTIVE
SOIC
D
8
2500
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
OPA355UAG4
ACTIVE
SOIC
D
8
75
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
19-Nov-2012
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
19-Nov-2012
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
OPA2355DGSA/250
VSSOP
DGS
10
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
B0
(mm)
K0
(mm)
P1
(mm)
W
Pin1
(mm) Quadrant
250
180.0
12.4
5.3
3.4
1.4
8.0
12.0
Q1
OPA3355EA/250
TSSOP
PW
14
250
180.0
12.4
6.9
5.6
1.6
8.0
12.0
Q1
OPA3355EA/2K5
TSSOP
PW
14
2500
330.0
12.4
6.9
5.6
1.6
8.0
12.0
Q1
OPA355UA/2K5
SOIC
D
8
2500
330.0
12.4
6.4
5.2
2.1
8.0
12.0
Q1
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
19-Nov-2012
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
OPA2355DGSA/250
VSSOP
DGS
10
250
210.0
185.0
35.0
OPA3355EA/250
TSSOP
PW
14
250
210.0
185.0
35.0
OPA3355EA/2K5
TSSOP
PW
14
2500
367.0
367.0
35.0
OPA355UA/2K5
SOIC
D
8
2500
367.0
367.0
35.0
Pack Materials-Page 2
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