LTC6246/LTC6247/LTC6248
180MHz, 1mA Power
Efficient Rail-to-Rail
I/O Op Amps
FEATURES DESCRIPTION
n
Gain Bandwidth Product: 180MHz The LTC 6246/LTC6247/LTC6248 are single/dual/quad low
n
3dB Frequency (A = 1): 120MHz
power, high speed unity gain stable rail-to-rail input/output
V
n
Low Quiescent Current: 1mA Max
operational amplifiers. On only 1mA of supply current they
n
High Slew Rate: 90V/s
feature an impressive 180MHz gain-bandwidth product,
n
Input Common Mode Range Includes Both Rails
90V/s slew rate and a low 4.2nV/Hz of input-referred
n
Output Swings Rail-to-Rail
noise. The combination of high bandwidth, high slew rate,
n
Low Broadband Voltage Noise: 4.2nV/Hz
low power consumption and low broadband noise makes
n
Power-Down Mode: 42A
these amplifiers unique among rail-to-rail input/output op
n
Fast Output Recovery
amps with similar supply currents. They are ideal for lower
n
Supply Voltage Range: 2.5V to 5.25V
supply voltage high speed signal conditioning systems.
n
Input Offset Voltage: 0.5mV Max
The LTC6246 family maintains high efficiency performance
n
Input Bias Current: 100nA
from supply voltage levels of 2.5V to 5.25V and is fully
n
Large Output Current: 50mA
specified at supplies of 2.7V and 5.0V.
n
CMRR: 110dB
n
Open Loop Gain: 45V/mV
For applications that require power-down, the LTC6246 and
n
Operating Temperature Range: 40C to 125C
the LTC6247 in MS10 offer a shutdown pin which disables
n
Single in 6-Lead TSOT-23
the amplifier and reduces current consumption to 42A.
n
Dual in MS8, 2mm 2mm DFN,TS0T-23, MS10
The LTC6246 family can be used as a plug-in replacement
n
Quad in MS16
for many commercially available op amps to reduce power
or to improve input/output range and performance.
APPLICATIONS
All registered trademarks and trademarks are the property of their respective owners.
n
Low Voltage, High Frequency Signal Processing
n
Driving A/D Converters
n
Rail-to-Rail Buffer Amplifiers
n
Active Filters
n
Video Amplifiers
n
Fast Current Sensing Amplifiers
n
Battery Powered Equipment
TYPICAL APPLICATION
350kHz FFT Driving ADC
0
f = 350.195kHz
IN
Low Noise Low Distortion Gain = 2 ADC Driver
10
f = 2.2Msps
SAMP
SFDR = 82dB
20
3.3V 2.5V
SNR = 70dB
30
1024 POINT FFT
3.3V
V V
DD REF 40
CS
V
+
IN
50
SDO
A
LTC6246 IN LTC2366
60
SCK
70
OV
499 DD
GND
80
1%
624678 TA01a
90
499
10pF
100
1%
110
0 200 400 600 800 1000
FREQUENCY (kHz)
624678 TA01b
Rev C
Document Feedback 1
For more information www.analog.com
MAGNITUDE (dB)LTC6246/LTC6247/LTC6248
ABSOLUTE MAXIMUM RATINGS (Note 1)
+
Total Supply Voltage (V to V ) ................................5.5V Specified Temperature Range (Note 5) .. 40C to 125C
Input Current (+IN, IN, SHDN) (Note 2) .............. 10mA Storage Temperature Range .................. 65C to 150C
Output Current (Note 3) .....................................100mA Junction Temperature ........................................... 150C
Operating Temperature Range (Note 4).. 40C to 125C Lead Temperature (Soldering, 10 sec)
(MSOP, TSOT Packages Only) ...............................300C
PIN CONFIGURATION
TOP VIEW
+
OUT A 1 8 V
TOP VIEW
TOP VIEW
+
IN A 2 7 OUT B
+ OUT A 1 10 V
OUT A 1 8 V
+
IN A 2 9 OUT B
+IN A 3 6 IN B
IN A 2 7 OUT B +
+
+IN A 3 8 IN B
+IN A 3 6 IN B
V 4 5 +IN B
9 V 4 7 +IN B
5 +IN B
V 4
SHDNA 5 6 SHDNB
MS8 PACKAGE
MS PACKAGE
KC PACKAGE
8-LEAD PLASTIC MSOP
10-LEAD PLASTIC MSOP
8-LEAD PLASTIC UTDFN (2mm 2mm 0.6mm)
T = 150C, = 163C/W (NOTE 9)
JMAX JA
T = 150C, = 160C/W (NOTE 9)
T = 125C, = 102C/W (NOTE 9) JMAX JA
JMAX JA
EXPOSED PAD (PIN 9) IS V , MUST BE SOLDERED TO PCB
OBSOLETE PACKAGE
TOP VIEW
TOP VIEW
OUT A 1 16 OUT D
IN A 2 15 IN D
+
+
OUT 1 6 V
+IN A 3 14 +IN D
+
V 4 13 V
V 2 5 SHDN
+IN B 5 + 12 +IN C +
IN B 6 11 IN C
+IN 3 4 IN
OUT B 7 10 OUT C
8 9
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
MS PACKAGE
16-LEAD PLASTIC MSOP
T = 150C, = 192C/W (NOTE 9)
JMAX JA
T = 150C, = 125C/W (NOTE 9)
JA
JMAX
TOP VIEW
TOP VIEW
+
OUT A 1 8 V
+
OUT A 1 8 V
IN A 2 7 OUT B
IN A 2 7 OUT B
+
+
+IN A 3 6 IN B
+IN A 3 6 IN B
9
V 4 +IN B
5 V 4 5 +IN B
TS8 PACKAGE
DC PACKAGE
8-LEAD PLASTIC TSOT-23
8-LEAD (2mm 2mm 0.8mm) PLASTIC DFN
T = 150C, = 195C/W (NOTE 9)
JMAX JA
T = 125C, = 102C/W (NOTE 9)
JMAX JA
EXPOSED PAD (PIN 9) IS V , MUST BE SOLDERED TO PCB
Rev C
2
For more information www.analog.com
+
+
+
+
+
+
+