Linear Technology LT1468CS8 Linear IC SO8 70MHz 16-Bit Accurate OA LT1468CS8 Data Sheet
Product codes
LT1468CS8
1
LT1468
90MHz, 22V/
µ
s
16-Bit Accurate
Operational Amplifier
FREQUENCY (Hz)
100
–110
TOTAL HARMONIC DISTORTION (dB)
–100
– 90
1k
10k
100k
1468 TA02
–120
–130
– 80
V
S
=
±
15V
A
V
= 2
R
L
= 2k
V
OUT
= 10V
P-P
Total Harmonic Distortion vs Frequency
FEATURES
DESCRIPTIO
U
The LT
®
1468 is a precision high speed operational ampli-
fier with 16-bit accuracy and 900ns settling to 150
µ
V for
10V signals. This unique blend of precision and AC perfor-
mance makes the LT1468 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.
mance makes the LT1468 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 appli-
cations such as an ADC buffer, the low distortion and DC
accuracy allow full 16-bit AC and DC performance.
at frequency for reducing distortion. In noninverting appli-
cations such as an ADC buffer, the low distortion and DC
accuracy allow full 16-bit AC and DC performance.
The 22V/
µ
s slew rate of the LT1468 improves large-signal
performance in applications such as active filters and
instrumentation amplifiers compared to other precision
op amps.
instrumentation amplifiers compared to other precision
op amps.
The LT1468 is manufactured on Linear Technology’s
complementary bipolar process.
complementary bipolar process.
■
90MHz Gain Bandwidth, f = 100kHz
■
22V/
µ
s Slew Rate
■
Settling Time: 900ns (A
V
= –1, 150
µ
V, 10V Step)
■
Low Distortion, – 96.5dB for 100kHz, 10V
P-P
■
Maximum Input Offset Voltage: 75
µ
V
■
Maximum Input Offset Voltage Drift: 2
µ
V/
°
C
■
Maximum (–) Input Bias Current: 10nA
■
Minimum DC Gain: 1000V/mV
■
Minimum Output Swing into 2k:
±
12.8V
■
Unity Gain Stable
■
Input Noise Voltage: 5nV/
√
Hz
■
Input Noise Current: 0.6pA/
√
Hz
■
Total Input Noise Optimized for 1k < R
S
< 20k
■
Specified at
±
5V and
±
15V
, LTC and LT are registered trademarks of Linear Technology Corporation.
■
16-Bit DAC Current-to-Voltage Converter
■
Precision Instrumentation
■
ADC Buffer
■
Low Distortion Active Filters
■
High Accuracy Data Acquisition Systems
■
Photodiode Amplifiers
APPLICATIO
N
S
U
TYPICAL APPLICATIO
U
20pF
6k
LTC
®
1597
LT1468
16
DAC
INPUTS
+
–
OFFSET: V
OS
+ I
B
(6k
Ω
) < 1LSB
SETTLING TIME TO 150
µ
V = 1.7
µ
s
SETTLING LIMITED BY 6k AND 20pF TO COMPENSATE DAC OUTPUT CAPACITANCE
V
OUT
2k
50pF
OPTIONAL NOISE FILTER
1468 TA01
16-Bit DAC I-to-V Converter