LTC6252/LTC6253/LTC6254
720MHz, 3.5mA Power
Efficient Rail-to-Rail
I/O Op Amps
FEATURES
DESCRIPTION
TheLTC®6252/LTC6253/LTC6254aresingle/dual/quadlow
power,highspeedunitygainstablerail-to-railinput/output
operational amplifiers. On only 3.5mA of supply current
they feature a 720MHz gain-bandwidth product, 280V/µs
slew rate and a low 2.75nV/√Hz of input-referred noise.
The combination of high bandwidth, high slew rate, low
power consumption and low broadband noise makes the
LTC6252 family unique among rail-to-rail input/output op
ampswithsimilarsupplycurrents. Theyareidealforlower
supply voltage high speed signal conditioning systems.
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Gain Bandwidth Product: 720MHz
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–3dB Frequency (A = 1): 400MHz
V
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Low Quiescent Current: 3.5mA Max
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High Slew Rate: 280V/µs
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Input Common Mode Range Includes Both Rails
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Output Swings Rail-to-Rail
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Low Broadband Voltage Noise: 2.75nV/√Hz
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Power-Down Mode: 42μA
Fast Output Recovery
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Supply Voltage Range: 2.5V to 5.25V
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Input Offset Voltage: 350µV Max
TheLTC6252familymaintainshighefficiencyperformance
from supply voltage levels of 2.5V to 5.25V and is fully
specified at supplies of 2.7V and 5.0V.
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Large Output Current: 90mA
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CMRR: 105dB
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Open Loop Gain: 60V/mV
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Forapplicationsthatrequirepower-down,theLTC6252and
the LTC6253 in MS10 offer a shutdown pin which disables
the amplifier and reduces current consumption to 42µA.
Operating Temperature Range: –40°C to 125°C
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Single in 6-Pin TSOT-23
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Dual in MS8, 2mm × 2mm DFN, 8-Pin TS0T-23, MS10
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Quad in MS16
The LTC6252 family can be used as a plug-in replacement
formanycommerciallyavailableopampstoreducepower
or to improve input/output range and performance.
APPLICATIONS
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Low Voltage, High Frequency Signal Processing
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
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Driving A/D Converters
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Rail-to-Rail Buffer Amplifiers
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Active Filters
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Battery Powered Equipment
TYPICAL APPLICATION
5V Single-Supply 16-Bit ADC Driver
LTC6253 Driving LTC2393-16
16-Bit ADC 5V Single-Supply
Performance
5V
5V
0.1µF
5V
0.1µF
1.8V TO 5V
4.7µF
V
+
IN
0
–20
f
S
= 1Msps
27.4mV TO
10µF
10µF
½ LTC6253
F1 = 20.111kHz
F1 AMPLITUDE
= –1.032dBFS
(3.5V + 27.4mV)
–
AVP
DVP
OVP
–40
PARALLEL
OR
SERIAL
INTERFACE
SNR = 93.28dB
THD = –100.50dB
SINAD = 92.53dB
SFDR = 104.7dB
F2 = –106.39dBc
F3 = –104.70dBc
F4 = –114.13dBc
F5 = –105.48dBc
249Ω
100Ω
16 BIT
+
–
143Ω
2.5k
2.5k
–60
IN
–80
5V
845Ω
3900pF
249Ω
LTC2393-16
SER/PAR
BYTESWAP
OB/2C
CS
–
–100
–120
–140
–160
100Ω
½ LTC6253
IN
+
RD
BUSY
REFIN
VCM
CNVST RESET
REFOUT
PD
GND OGND
625234 TA01
~2.08V
0
100
200
300
400
500
10µF
1µF
SAMPLE CLOCK
FREQUENCY (kHz)
624678 TA01b
625234fc
1