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LT1469 Fiches technique(PDF) 1 Page - Linear Technology

No de pièce LT1469
Description  Dual 90MHz, 22V/us 16-Bit Accurate Operational Amplifier
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LT1469 Fiches technique(HTML) 1 Page - Linear Technology

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LT1469
1
1469fa
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Dual 90MHz, 22V/µs
16-Bit Accurate Operational Amplifier
The LT®1469 is a dual, precision high speed operational
amplifier with 16-bit accuracy and 900ns settling to 150μV
for 10V steps. This unique blend of precision and AC
performance makes the LT1469 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 90MHz 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 22V/μs slew rate of the LT1469 improves large signal
performance compared to other precision op amps in
applications such as active filters and instrumentation
amplifiers.
The LT1469 is available in a space saving 4mm × 4mm
leadless package, as well as in small outline and DIP pack-
ages. A single version, the LT1468, is also available.
16-Bit DAC I-to-V Converter and Reference Inverter for Bipolar Output Swing (VOUT = –10V to 10V)
n 90MHz Gain Bandwidth, f = 100kHz
n Maximum Input Offset Voltage: 125μV
n Settling Time: 900ns (AV = –1, 150μV, 10V Step)
n 22V/μs Slew Rate
n Low Distortion: –96.5dB for 100kHz, 10VP-P
n Maximum Input Offset Voltage Drift: 3μV/°C
n Maximum Inverting Input Bias Current: 10nA
n Minimum DC Gain: 300V/mV
n Minimum Output Swing into 2k: ±12.8V
n Unity-Gain Stable
n Input Noise Voltage: 5nV/√Hz
n Input Noise Current: 0.6pA/√Hz
n Total Input Noise Optimized for 1kΩ < RS < 20kΩ
n Specified at ±5V and ±15V Supplies
n Precision Instrumentation
n High Accuracy Data Acquisition Systems
n 16-Bit DAC Current-to-Voltage Converter
n ADC Buffer
n Low Distortion Active Filters
n Photodiode Amplifiers
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Bipolar Multiplying Mode (LTC1597)
Signal-to-(Noise + Distortion)
15pF
2.4μs SETTLING TIME
TO 1LSB ON 20V STEP
RLPF
LTC1597
16 BITS
DAC INPUTS
VREF
1469 TA01
15pF
CLPF
VOUT
+
1/2 LT1469
1/2 LT1469
12k
12k
12k
12k
–15V
15V
FREQUENCY (Hz)
90
70
50
40
10
1k
10k
100k
1469 TA01a
110
100
60
80
100
DAC INPUT CODE = ALL ZEROS
VREF = 20VP-P
500kHz FILTER
80kHz FILTER
30kHz
FILTER


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