LT1468-2 Datasheet, PDF (1/12 Pages) Linear Technology – 200MHz, 30V/μs 16-Bit Accurate AV ≥ 2 Op Amp

FEATURES
n _{Stable in Gain AV ≥ 2 (AV = –1)}
n _{200MHz Gain Bandwidth Product}
n _{30V/μs Slew Rate}
n _{Settling Time: 800ns (10V Step, 150μV)}
n _{Specified at ±5V and ±15V Supplies}
n _{Low Distortion, – 96.5dB for 100kHz, 10VP-P}
n _{Maximum Input Offset Voltage: 75μV}
n _{Maximum Input Offset Voltage Drift: 2μV/°C}
n _{Maximum (–) Input Bias Current: 10nA}
n _{Minimum DC Gain: 1000V/mV}
n _{Minimum Output Swing into 2k: ±12.8V}
n _{Input Noise Voltage: 5nV/√Hz}
n _{Input Noise Current: 0.6pA/√Hz}
n _{Total Input Noise Optimized for 1k < RS < 20k}
n _{Available in an 8-Lead Plastic SO Package}
and 8-Lead DFN Package
APPLICATIONS
n _{16-Bit DAC Current-to-Voltage Converter}
n _{Precision Instrumentation}
n _{ADC Buffer}
n _{Low Distortion Active Filters}
n _{High Accuracy Data Acquisition Systems}
n _{Photodiode Amplifiers}
LT1468-2
200MHz, 30V/µs
16-Bit Accurate
A_V ≥ 2 Op Amp
DESCRIPTION
The LT^®1468-2 is a precision high speed operational ampli-
fier with 16-bit accuracy, decompensated to be stable in a
gain of 2 or greater. The combination of precision and AC
performance makes the LT1468-2 the optimum choice for
high accuracy applications such as DAC current-to-voltage
conversion and ADC buffers. The initial accuracy and drift
characteristics of the input offset voltage and inverting input
bias current are tailored for inverting applications.
The 200MHz gain bandwidth ensures high open-loop gain
at frequency for reducing distortion. In noninverting ap-
plications such as an ADC buffer, the low distortion and
DC accuracy allow full 16-bit AC and DC performance.
The high slew rate of the LT1468-2 improves large-signal
performance in applications such as active filters and
instrumentation amplifiers compared to other precision
op amps.
The LT1468-2 is specified on power supply voltages of
±5V and ±15V and from –40°C to 85°C. For a unity-gain
stable op amp with same DC performance, see the LT1468
datasheet.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
TYPICAL APPLICATION
16-Bit DAC I-to-V Converter
DAC ¹⁶
INPUTS
6k
LTC^®1597
20pF
–
LT1468-2
+
2k
V_OUT
50pF
OFFSET: V_OS + I_B (6kΩ) < 1LSB
SETTLING TIME TO 150μV = 1.6μs
OPTIONAL NOISE FILTER
SETTLING LIMITED BY 6k AND 20pF TO COMPENSATE DAC OUTPUT CAPACITANCE
14682 TA01
Large Signal Transient, A_V = –1
10V
2V/DIV
V_S = ±15V
A_V = –1
R_F = R_G = 2k
C_F = 22pF
0V
200ns/DIV
14682 TA02
14682f
1