UNBALANCED NOISE CURRENT (pA/Hz)
LT6230/LT6230-10
LT6231/LT6232
215MHz, Rail-to-Rail Output,
1.1nV/Hz, 3.5mA Op Amp Family
Fea T Descrip T
n
Low Noise Voltage: 1.1nV/Hz
The LT 6230/LT6231/LT6232 are single/dual/quad low
n
Low Supply Current: 3.5mA/Amp Max
noise, rail-to-rail output unity-gain stable op amps that
n
Low Offset Voltage: 350V Max
feature 1.1nV/Hz noise voltage and draw only 3.5mA of
n
Gain Bandwidth Product:
supply current per amplifier. These amplifiers combine
LT6230: 215MHz; A 1
very low noise and supply current with a 215MHz gain-
V
LT6230-10: 1450MHz; A 10
bandwidth product, a 70V/s slew rate and are optimized
V
n
Wide Supply Range: 3V to 12.6V
for low supply voltage signal conditioning systems. The
n
Output Swings Rail-to-Rail
LT6230-10 is a single amplifier optimized for higher gain
n
Common Mode Rejection Ratio: 115dB Typ
applications resulting in higher gain bandwidth and slew
n
Output Current: 30mA
rate. The LT6230 and LT6230-10 include an enable pin
n
Operating Temperature Range: 40C to 85C
that can be used to reduce the supply current to less
n
LT6230 Shutdown to 10A Maximum
than 10A.
n
LT6230/LT6230-10 in a Low Profile (1mm)
The amplifier family has an output that swings within 50mV
ThinSOT Package
of either supply rail to maximize the signal dynamic range
n
Dual LT6231 in 8-Pin SO and Tiny DFN Packages
in low supply applications and is specified on 3.3V, 5V and
n
LT6232 in a 16-Pin SSOP Package
5V supplies. The e I product of 1.9 per amplifier
n SUPPLY
is among the most noise efficient of any op amp.
a T
The LT6230/LT6230-10 are available in the 6-lead SOT-23
n
Ultrasound Amplifiers
package and the LT6231 dual is available in the 8-pin SO
n
Low Noise, Low Power Signal Processing
package with standard pinouts. For compact layouts,
n
Active Filters
the dual is also available in a tiny dual fine pitch leadless
n
Driving A/D Converters
package (DFN). The LT6232 is available in the 16-pin
n
Rail-to-Rail Buffer Amplifiers
SSOP package.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Typical a T
Noise Voltage and Unbalanced
Low Noise Low Power Instrumentation Amplifier Noise Current vs Frequency
+ 6 6
V
V = 2.5V
S
S
T = 25C
A
R4 R6
+
IN +
V = 0V
5 CM 5
499 499
1/2 LT6231
+
4 4
V
S
R2
196
+
3 3
R1 NOISE CURRENT
LT6202 V
OUT
10
2 2
R3
196 R5 R7
V
S 1 1
499 499 NOISE VOLTAGE
623012 TA01a
1/2 LT6231
0 0
IN A = 40 I = 10mA
+
V S 10 100 1k 10k 100k
BW = 5.1MHz
EN = 5.8V INPUT REFERRED, FREQUENCY (Hz)
RMS
V
V = 1.5V to 5V
S
S
MEASUREMENT BW = 8MHz
623012 TA01b
623012fc
1
NOISE VOLTAGE (nV/Hz)
ion pplica
ions pplica
ion uresLT6230/LT6230-10
LT6231/LT6232
a Te Maxi Mu M r a T (Note 1)
+
Total Supply Voltage (V to V ) ..............................12.6V Junction Temperature (DD Package) .................... 125C
Input Current (Note 2) ......................................... 40mA Storage Temperature Range .................. 65C to 150C
Output Short-Circuit Duration (Note 3) ............ Indenfi ite Storage Temperature Range
Operating Temperature Range (Note 4)....40C to 85C (DD Package) ........................................ 65C to 125C
Specified Temperature Range (Note 5) ....40C to 85C Lead Temperature (Soldering, 10 sec) ...................300C
Junction Temperature ........................................... 150C
p in c F T
TOP VIEW
TOP VIEW
+
OUT A 1 8 V
+
OUT 1 6 V
IN A 2 7 OUT B
+
V 2 5 ENABLE
+IN A IN B
3 6
+IN 3 +
4 IN
V 4 5 +IN B
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
DD PACKAGE
8-LEAD (3mm 3mm) PLASTIC DFN
T = 150C, = 250C/W
JMAX JA
T = 125C, = 160C/W
JMAX JA
UNDERSIDE METAL CONNECTED TO V (PCB CONNECTION OPTIONAL)
TOP VIEW
OUT A 1 16 OUT D
TOP VIEW
IN A 2 15 IN D
A D
+
+
OUT A 1 8 V
+IN A 3 14 +IN D
+
IN A 2 7 OUT B 4
V 13 V
+
+
5
+IN A 3 6 IN B +IN B 12 +IN C
B C
+
6 11
IN B IN C
V 4 5 +IN B
7 10
OUT B OUT C
S8 PACKAGE
8 9
8-LEAD PLASTIC SO NC NC
T = 150C, = 200C/W
JMAX JA
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP
T = 150C, = 135C/W
JMAX JA
623012fc
2
+
+
ion igura on
ings bsolu