OPA725, OPA2725
OPA726, OPA2726
SBOS278B − SEPTEMBER 2003 − REVISED JANUARY 2004
Very Low Noise, High-Speed, 12V CMOS
Operational Amplifier
FEATURES
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
BANDWIDTH: 20MHz
SLEW RATE: 30V/µs
FAST 16-BIT SETTLING TIME
LOW NOISE: 6nV/√Hz (typ) at 100kHz
EXCELLENT CMRR, PSRR, and A
OL
RAIL-TO-RAIL OUTPUT
CM RANGE INCLUDES GND
THD+N: 0.0003% (typ) at 1kHz
QUIESCENT CURRENT: 5.5mA/ch (max)
SUPPLY VOLTAGE: 4V to 12V
SHUTDOWN MODE (OPAx726): 6µA/ch
DESCRIPTION
The OPA725 and OPA726 series op amps use a
state-of-the-art 12V analog CMOS process, and combine
outstanding ac performance with low bias current and
excellent CMRR, PSRR, and A
OL
. The 20MHz
Gain-Bandwidth (GBW) Product is achieved by using a
proprietary and patent-pending output stage design.
These characteristics allow excellent 16-bit settling times
for driving 16-bit Analog-to-Digital converters (ADCs).
Excellent ac characteristics, such as 20MHz GBW, 30V/µs
slew rate and 0.0003% THD+N make the OPA725 and
OPA726 well-suited for communication, high-end audio,
and active filter applications. With a bias current of less
than 200pA, they are well-suited for use as
transimpedance (I/V-conversion) amplifiers for monitoring
optical power in ONET applications.
The OPA725 and OPA726 op amps can be used in
single-supply applications from 4V up to 12V, or
dual-supply from
±2V
to
±6V.
The output swings to within
150mV of the rails, maximizing dynamic range. The
shutdown versions (OPAx726) reduce the quiescent
current to less than 6µA and feature a reference pin for
easy shutdown operation with standard CMOS logic in
dual-supply applications.
The OPA725 (single) is available in SOT23-5 and SO-8
packages, and the OPA2725 (dual) is available in MSOP-8
and SO-8 packages. The OPA726 (single with shutdown)
is available in MSOP-8 and SO-8. The OPA2726 (dual with
shutdown) is available in MSOP-10. All versions are
specified for operation from −40°C to +125°C.
APPLICATIONS
OPTICAL NETWORKING
TRANSIMPEDANCE AMPLIFIERS
INTEGRATORS
ACTIVE FILTERS
A/D CONVERTER BUFFERS
I/V CONVERTER FOR DACs
PORTABLE AUDIO
PROCESS CONTROL
TEST EQUIPMENT
OPA725 RELATED PRODUCTS
FEATURES
10MHz, 16V, 16V/µs, 8.5nV/√Hz at 1kHz
8MHz, 36V, FET Input, 20V/µs, 8.5nV/√Hz at 1kHz
100MHz, 5.5V, Precision Transimpedance Amplifier
500MHz,
±5V,
FET Input, 290V/µs, 7nV/√Hz at 100kHz
7MHz, 12V, RRIO, 10V/µs, 30nV/√Hz at 10kHz
16-Bit, 250kSPS, 4-Channel, Parallel Output ADC
PRODUCT
TLC080
OPA132
OPA380
OPA656
OPA743
ADS8342
+5V
+12V
75
Ω
λ
O PA726
+5V
V
OUT
V
IN
±
2.5V
OPA725
AIN
ADS8342
330pF
−5V
16− ADC
Bit
Common
Enable
−V
B
−5V
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.
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.
Copyright
2003−2004, Texas Instruments Incorporated
www.ti.com
OPA725, OPA2725
OPA726, OPA2726
www.ti.com
SBOS278B − SEPTEMBER 2003 − REVISED JANUARY 2004
ORDERING INFORMATION
PRODUCT
Non-Shutdown
OPA725
″
OPA725
″
OPA2725
″
OPA2725
″
Shutdown
OPA726
″
OPA726
″
OPA2726
″
SO-8
″
MSOP-8
″
MSOP-10
″
D
″
DGK
″
DGS
″
−40°C to +125°C
″
−40°C to +125°C
″
−40°C to +125°C
″
OPA726A
″
BHC
″
BHB
″
OPA726AID
OPA726AIDR
OPA726AIDGKT
OPA726AIDGKR
OPA2726AIDGST
OPA2726AIDGSR
Rails, 100
Tape and Reel, 2500
Tape and Reel, 250
Tape and Reel, 2500
Tape and Reel, 250
Tape and Reel, 2500
SOT23-5
″
SO-8
″
SO-8
″
MSOP-8
″
DBV
″
D
″
D
″
DGK
″
−40°C to +125°C
″
−40°C to +125°C
″
−40°C to +125°C
″
−40°C to +125°C
″
OALI
″
OPA725A
″
OPA2725A
″
BGM
″
OPA725AIDBVT
OPA725AIDBVR
OPA725AID
OPA725AIDR
OPA2725AID
OPA2725AIDR
OPA2725AIDGKT
OPA2725AIDGKR
Tape and Reel, 250
Tape and Reel, 3000
Rails, 100
Tape and Reel, 2500
Rails, 100
Tape and Reel, 2500
Tape and Reel, 250
Tape and Reel, 2500
PACKAGE-LEAD
PACKAGE
DESIGNATOR(1)
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER
TRANSPORT
MEDIA, QUANTITY
(1) For the most current package and ordering information, see the Package Option Addendum located at the end of this datasheet.
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.
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13.2V
Signal Input Terminals, Voltage(2) . . . . . . . . . −0.5V to (V+) + 0.5V
Current(2) . . . . . . . . . . . . . . . . . . .
±10mA
Output Short Circuit(3) . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
Operating Temperature . . . . . . . . . . . . . . . . . . . . . −55°C to +125°C
Storage Termperature . . . . . . . . . . . . . . . . . . . . . . −55°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Lead Temperature (soldering, 10s) . . . . . . . . . . . . . . . . . . . . +300°C
ESD Rating (Human Body Model) . . . . . . . . . . . . . . . . . . . . 1000 V
(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 supported.
(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.
2
OPA725, OPA2725
OPA726, OPA2726
www.ti.com
SBOS278B − SEPTEMBER 2003 − REVISED JANUARY 2004
PIN CONFIGURATIONS
OPA725
OPA725
NC
(1)
Out
V−
+IN
1
2
3
SOT23−
5
SO−
8
4
−IN
+IN
V−
3
4
6
5
OUT
NC
(1)
+IN
V−
3
4
5
V+
−IN
2
7
V+
−IN
2
1
8
NC
(1)
DGND
(2)
1
OPA726
8
7
6
5
SO− MSOP−
8,
8
Enable
V+
OUT
NC
(1)
OPA2725
OUT A
1
A
B
8
7
6
5
SO− MSOP−
8,
8
V+
OUT B
−IN
B
+IN B
OUT A
1
OPA2726
10 V+
A
B
9
8
7
6
MSOP−
10
OUT B
−IN
B
+IN B
Enable
−IN
A 2
+IN A
V
−
3
4
−IN
A 2
+IN A
V
−
DGND
(2)
3
4
5
(1) NC denotes no internal connection.
(2) DGND = reference voltage for Enable Reference pin. Voltage on this pin
will be the voltage to which the Enable Reference pin is referenced.
3
OPA725, OPA2725
OPA726, OPA2726
www.ti.com
SBOS278B − SEPTEMBER 2003 − REVISED JANUARY 2004
ELECTRICAL CHARACTERISTICS: V
S
= +4V to +12V or V
S
=
±2V
to
±6V
Boldface
limits apply over the specified temperature range,
T
A
= −40°C to +125°C.
At TA = +25°C, RL = 10kΩ connected to VS/2, and VOUT = VS/2, unless otherwise noted.
OPA725, OPA726, OPA2725, OPA2726
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
OPA725, OPA726
OPA2725, OPA2726
Drift
vs Power Supply
Over Temperature
Channel Separation, DC
INPUT BIAS CURRENT
Input Bias Current
Over Temperature
Input Offset Current
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz
Input Voltage Noise Density, f = 10kHz
Input Voltage Noise Density, f = 100kHz
Input Current Noise Density, f = 1kHz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
Over Temperature
Over Temperature
INPUT IMPEDANCE
Differential
Common-Mode
OPEN-LOOP GAIN
Open-Loop Voltage Gain
OPA725, OPA726
Over Temperature
OPA2725, OPA2726
Over Temperature
OPA725, OPA726
Over Temperature
OPA2725, OPA2726
Over Temperature
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time, 0.1%
0.01%
Overload Recovery Time
Total Harmonic Distortion + Noise
A
OL
R
L
= 100kΩ, 0.15V < V
O
< (V+) − 0.15V
R
L
= 100kΩ, 0.15V < V
O
< (V+) − 0.15V
R
L
= 100kΩ, 0.175V < V
O
< (V+) − 0.175V
R
L
= 100kΩ, 0.175V < V
O
< (V+) − 0.175V
R
L
= 1kΩ, 0.25V < V
O
< (V+) − 0.25V
R
L
= 1kΩ, 0.25V < V
O
< (V+) − 0.25V
R
L
= 2kΩ, 0.25V < V
O
< (V+) − 0.25V
R
L
= 2kΩ, 0.25V < V
O
< (V+) − 0.25V
C
L
= 20pF
GBW
SR
t
S
G = +1
V
S
=
±6V,
5V Step, G = +1
V
S
=
±6V,
5V Step, G = +1
V
IN
•
Gain > V
S
VS =
±6V,
VOUT = 2VRMS, RL = 600Ω,
G = +1, f = 1kHz
CONDITIONS
V
OS
V
S
=
±6V,
V
CM
= 0V
V
S
=
±6V,
V
CM
= 0V
dV
OS
/dT
PSRR
V
S
=
±2V
to
±6V,
V
CM
= V−
V
S
=
±2V
to
±6V,
V
CM
= V−
MIN
TYP
MAX
UNIT
1.2
1.5
4
30
1
3
5
100
150
mV
mV
µV/°C
µV/V
mV/V
µV/V
pA
pA
µV
PP
nV/√Hz
nV/√Hz
fA/√Hz
I
B
I
OS
e
n
e
n
e
n
i
n
V
CM
CMRR
V
S
=
±6V,
V
S
=
±6V,
V
S
=
±6V,
V
S
=
±6V,
V
CM
= 0V
V
CM
= 0V
V
CM
= 0V
V
CM
= 0V
30
200
See Typical Characteristics
10
50
10
10
6
2.5
(V−)
88
84
94
84
(V+) − 2
94
100
(V−)
≤
V
CM
≤
(V+) − 2V
(V−)
≤
V
CM
≤
(V+) − 2V
(V−)
≤
V
CM
≤
(V+) − 3V
(V−)
≤
V
CM
≤
(V+) − 3V
V
dB
dB
dB
dB
Ω
pF
Ω
pF
10
11
5
10
11
4
110
100
110
100
106
96
106
96
120
120
116
116
dB
dB
dB
dB
dB
dB
dB
dB
MHz
V/µs
ns
ns
ns
%
THD+N
20
30
350
450
50
0.0003
4
OPA725, OPA2725
OPA726, OPA2726
www.ti.com
SBOS278B − SEPTEMBER 2003 − REVISED JANUARY 2004
ELECTRICAL CHARACTERISTICS: V
S
= +4V to +12V or V
S
=
±2V
to
±6V
(continued)
Boldface
limits apply over the specified temperature range,
T
A
= −40°C to +125°C.
At TA = +25°C, RL = 10kΩ connected to VS/2, and VOUT = VS/2, unless otherwise noted.
OPA725, OPA726, OPA2725, OPA2726
PARAMETER
OUTPUT
Voltage Output Swing from Rail
OPA725, OPA726
Over Temperature
OPA2725, OPA2726
Over Temperature
OPA725, OPA726
Over Temperature
OPA2725, OPA2726
Over Temperature
Output Current
Short-Circuit Current
Capacitive Load Drive
Open-Loop Output Impedance
ENABLE/SHUTDOWN (OPAx726)
t
OFF
t
ON
Enable Reference (DGND) Voltage Range
V
L
(shutdown)
V
H
(amplifier is active)
Input Disable Current
I
QSD
(per amplifier)
POWER SUPPLY
Specified Voltage Range
Operating Voltage Range
Quiescent Current (per amplifier)
Over Temperature
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
SOT23-5
MSOP-8, MSOP-10, SO-8
CONDITIONS
MIN
TYP
MAX
UNIT
I
OUT
I
SC
C
LOAD
R
L
= 100kΩ, A
OL
> 110dB
R
L
= 100kΩ, A
OL
> 100dB
R
L
= 100kΩ, A
OL
> 110dB
R
L
= 100kΩ, A
OL
> 100dB
R
L
= 1kΩ, A
OL
> 106dB
R
L
= 1kΩ, A
OL
> 96dB
R
L
= 2kΩ, A
OL
> 106dB
R
L
= 2kΩ, A
OL
> 96dB
V
S
− V
OUT
< 1V
100
125
200
200
150
150
175
175
250
250
250
250
f = 1MHz, I
O
= 0
40
±55
See Typical Characteristics
40
5
30
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
Ω
µs
µs
V
V
V
µA
µA
V
V
mA
mA
°C
°C
°C
°C/W
°C/W
V
DGND
V−
> V
DGND
+2V
Ref Pin = Enable Pin = V−
5
6
4
I
O
= 0
3.5 to 13.2
4.3
(V+) − 2
< V
DGND
+0.8V
15
12
5.5
6
125
125
150
V
S
V
S
I
Q
−40
−55
−55
q
JA
200
150
5
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