LTC6241 Datasheet, PDF (1/24 Pages) Linear Technology – Dual/Quad 18MHz, Low Noise, Rail-to-Rail, CMOS Op Amps

FEATURES
■ _{0.1Hz to 10Hz Noise: 550nVP-P}
■ _{Input Bias Current: 1pA (Typ at 25°C)}
■ _{Low Offset Voltage: 125µV Max}
■ _{Low Offset Drift: 2.5µV/°C Max}
■ _{Voltage Gain: 124dB Typ}
■ _{Gain Bandwidth Product: 18MHz}
■ _{Output Swings Rail-to-Rail}
■ _{Supply Operation:}
2.8V to 6V LTC6241/LTC6242
2.8V to ±5.5V LTC6241HV/LTC6242HV
■ _{Low Input Capacitance}
■ _{Dual LTC6241 in 8-Pin SO and Tiny DFN Packages}
■ _{Quad LTC6242 in 16-Pin SSOP and 5mm × 3mm}
DFN Packages
U
APPLICATIO S
■ _{Photo Diode Amplifiers}
■ _{Charge Coupled Amplifiers}
■ _{Low Noise Signal Processing}
■ _{Active Filters}
■ _{Medical Instrumentation}
■ _{High Impedance Transducer Amplifier}
LTC6241/LTC6242
Dual/Quad 18MHz, Low
Noise, Rail-to-Rail,
CMOS Op Amps
DESCRIPTIO
The LTC^®6241/LTC6242 are dual and quad low noise,
low offset, rail-to-rail output, unity gain stable CMOS op
amps that feature 1pA of input bias current. The 0.1Hz to
10Hz noise of only 550nV_P-P, along with an offset of just
125µV make them uncommon among traditional CMOS
op amps. Additionally, noise is guaranteed to be less
than 10nV/√Hz at 1kHz. An 18MHz gain bandwidth, and
10V/µs slew rate, along with the wide supply range and
low input capacitance, make them perfect for use as fast
signal processing amplifiers.
These op amps have an output stage that swings within
30mV of either supply rail to maximize the signal dynamic
range in low supply applications. The input common mode
range extends to the negative supply. They are fully speci-
fied on 3V and 5V, and an HV version guarantees operation
on supplies up to ±5.5V.
The LTC6241 is available in the 8-pin SO, and for compact
designs it is packaged in the tiny dual fine pitch leadless
(DFN) package. The LTC6242 is available in the 16-Pin
SSOP as well as the 5mm × 3mm DFN package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
Low Noise Single-Ended Input to Differential Output Amplifier
C3
10pF
C1
R1
10pF
200k
V_IN
–
1/2
LTC6241
+
C4
10pF
R3
4.99k
R2
200k
R4
4.99k
+2.5V
–
1/2
LTC6241
+
–2.5V
V_OUT+
V_OUT–
C2
10pF
6241 TA01a
Noise Voltage vs Frequency
60
T_A = 25°C
V_S = ±2.5V
50
V_CM = 0V
40
30
20
10
0
1
10
100
1k
10k 100k
FREQUENCY (Hz)
6241 TA01b
62412f
1