LM8261 Single
RRIO, High Output Current & Unlimited Cap Load Op
Amp in SOT23-5
General Description
The LM8261 is a Rail-to-Rail input and output Op Amp which
can operate with a wide supply voltage range. This device
has high output current drive, greater than Rail-to-Rail input
common mode voltage range, unlimited capacitive load drive
capability, and provides tested and guaranteed high speed
and slew rate while requiring only 0.97mA supply current. It
is specifically designed to handle the requirements of flat
panel TFT panel V
suitable for other low power, and medium speed applications
which require ease of use and enhanced performance over
existing devices.
Greater than Rail-to-Rail input common mode voltage range
with 50dB of Common Mode Rejection, allows high side and
low side sensing, among many applications, without having
any concerns over exceeding the range and no compromise
in accuracy. Exceptionally wide operating supply voltage
range of 2.5V to 30V alleviates any concerns over functionality under extreme conditions and offers flexibility of use in
multitude of applications. In addition, most device parameters are insensitive to power supply variations; this design
enhancement is yet another step in simplifying its usage.
The output stage has low distortion (0.05% THD+N) and can
supply a respectable amount of current (15mA) with minimal
headroom from either rail (300mV).
driver applications as well as being
COM
The LM8261 is offered in the space saving SOT23-5 package.
n GBWP21MHz
n Wide supply voltage range2.5V to 30V
n Slew rate12V/µs
n Supply current0.97 mA
n Cap load limitUnlimited
n Output short circuit current+53mA/−75mA
±
n
5% Settling time400ns (500pF, 100mVPPstep)
n Input common mode voltage0.3V beyond rails
n Input voltage noise15nV/
n Input current noise1pA/
n THD+N
Applications
n TFT-LCD flat panel V
n A/D converter buffer
n High side/low side sensing
n Headphone amplifier
COM
driver
April 2006
<
0.05%
LM8261 Single RRIO, High Output Current & Unlimited Cap Load Op Amp in SOT23-5
Unless otherwise specified, all limited guaranteed for TA= 25˚C, V+= 15V, V−= −15V, VCM= 0V, VO= 0V, and
>
1MΩ to 0V. Boldface limits apply at the temperature extremes.
R
L
SymbolParameterCondition
>
CMVRInput Common-Mode Voltage RangeCMRR
50dB−15.3−15.1
Typ
(Note 5)
Limit
(Note 6)
−15.0
15.315.1
15.0
A
VOL
V
O
Large Signal Voltage GainVO=0Vto±13V,
= 10KΩ
R
L
V
=0Vto±13V,
O
=2KΩ
R
L
Output Swing
RL= 10KΩ14.8314.65
High
=2KΩ14.7314.60
R
L
8578
74
7972
66
14.61
14.55
Output Swing
Low
RL= 10KΩ−14.91−14.75
−14.65
=2KΩ−14.83−14.65
R
L
−14.60
I
SC
Output Short Circuit CurrentSourcing to ground
= 200mV (Note 10)
V
ID
Sinking to ground
= 200mV (Note 10)
V
ID
I
S
Supply CurrentNo load, VCM= 0V1.301.50
6040
25
10070
60
1.90
SRSlew Rate
= +1, VI= 24V
A
V
PP
1510
(Note 8)
f
u
Unity Gain FrequencyVI= 10mV, RL=2KΩ14–MHz
GBWPGain-Bandwidth Productf = 50KHz2418
16
Phi
e
n
m
Phase MarginVI= 10mV58–Deg
Input-Referred Voltage Noisef = 2KHz, RS=50Ω15–nV/
LM8261
Units
V
max
V
min
dB
min
V
min
V
max
mA
min
mA
max
V/µs
8
min
MHz
min
i
n
f
MAX
t
s
THD+NTotal Harmonic Distortion +NoiseR
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Rating indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human Body Model is 1.5kΩ in series with 100pF.
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150˚C.
Note 4: The maximum power dissipation is a function of T
P
D
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Positive current corresponds to current flowing into the device.
Note 8: Slew rate is the slower of the rising and falling slew rates. Connected as a Voltage Follower.
Note 9: Machine Model, 0Ω is series with 200pF.
Note 10: Short circuit test is a momentary test. See Note 11.
Note 11: Output short circuit duration is infinite for V
Input-Referred Current Noisef = 2KHz1–pA/
Full Power BandwidthZL= 20pF || 10KΩ160–KHz
Settling Time (±1%, AV= +1)Positive Step, 5V
Negative Step, 5V
L
A
V
=(T
J(MAX)-TA
)/ θJA. All numbers apply for packages soldered directly onto a PC board.
J(max)
≤ 6V at room temperature and below. For V
S
PP
PP
=1KΩ, f = 10KHz,
= +2, 28VPPswing
, θJA, and TA. The maximum allowable power dissipation at any ambient temperature is
Note 12: Offset voltage average drift determined by dividing the change in VOSat temperature extremes into the total temperature change.
LM8261
Note 13: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating
of the device such that T
. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self heating where T
J=TA
Typical Performance Characteristics
TA= 25˚C, Unless Otherwise Noted
vs. VCMfor 3 Representative UnitsVOSvs. VCMfor 3 Representative Units
V
OS
>
TA.
J
10108430
VOSvs. VCMfor 3 Representative UnitsVOSvs. VSfor 3 Representative Units
1010843110108434
10108429
www.national.com6
LM8261
Typical Performance Characteristics T
V
vs. VSfor 3 Representative UnitsVOSvs. VSfor 3 Representative Units
OS
10108435
IBvs. V
CM
= 25˚C, Unless Otherwise Noted (Continued)
A
IBvs. V
S
10108433
ISvs. V
CM
1010842410108436
ISvs. V
CM
1010842710108428
www.national.com7
Loading...
+ 14 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.