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Linear Technology Electronic Components Datasheet

LT1468 Datasheet

90MHz/ 22V/us 16-Bit Accurate Operational Amplifier

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FEATURES
s 90MHz Gain Bandwidth, f = 100kHz
s 22V/µs Slew Rate
s Settling Time: 900ns (AV = –1, 150µV, 10V Step)
s Low Distortion, – 96.5dB for 100kHz, 10VP-P
s Maximum Input Offset Voltage: 75µV
s Maximum Input Offset Voltage Drift: 2µV/°C
s Maximum (–) Input Bias Current: 10nA
s Minimum DC Gain: 1000V/mV
s Minimum Output Swing into 2k: ±12.8V
s Unity Gain Stable
s Input Noise Voltage: 5nV/Hz
s Input Noise Current: 0.6pA/Hz
s Total Input Noise Optimized for 1k < RS < 20k
s Specified at ±5V and ±15V
U
APPLICATIONS
s 16-Bit DAC Current-to-Voltage Converter
s Precision Instrumentation
s ADC Buffer
s Low Distortion Active Filters
s High Accuracy Data Acquisition Systems
s Photodiode Amplifiers
LT1468
90MHz, 22V/µs
16-Bit Accurate
Operational Amplifier
DESCRIPTIO
The LT®1468 is a precision high speed operational ampli-
fier with 16-bit accuracy and 900ns settling to 150µV 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.
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.
The 22V/µs slew rate of the LT1468 improves large-signal
performance in applications such as active filters and
instrumentation amplifiers compared to other precision
op amps.
The LT1468 is manufactured on Linear Technology’s
complementary bipolar process.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
16-Bit DAC I-to-V Converter
DAC 16
INPUTS
6k
LTC ®1597
20pF
LT1468
+
2k
VOUT
50pF
OFFSET: VOS + IB (6k) < 1LSB
OPTIONAL NOISE FILTER
SETTLING TIME TO 150µV = 1.7µs
SETTLING LIMITED BY 6k AND 20pF TO COMPENSATE DAC OUTPUT CAPACITANCE
1468 TA01
Total Harmonic Distortion vs Frequency
– 80
VS = ±15V
AV = 2
– 90
RL = 2k
VOUT = 10VP-P
– 100
– 110
– 120
– 130
100
1k 10k
FREQUENCY (Hz)
100k
1468 TA02
1


Linear Technology Electronic Components Datasheet

LT1468 Datasheet

90MHz/ 22V/us 16-Bit Accurate Operational Amplifier

No Preview Available !

LT1468
ABSOLUTE AXI U RATI GS
(Note 1)
Total Supply Voltage (V+ to V ) ............................... 36V
Maximum Input Current (Note 2) ......................... 10mA
Output Short-Circuit Duration (Note 3) ............ Indefinite
Operating Temperature Range ................ – 40°C to 85°C
Specified Temperature Range (Note 4) ... – 40°C to 85°C
Junction Temperature ........................................... 150°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
NULL 1
– IN 2
+ IN 3
V4
8 DNC*
7 V+
6 VOUT
5 NULL
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
*DO NOT CONNECT
TJMAX = 150°C, θJA = 130°C/W (N8)
TJMAX = 150°C, θJA = 190°C/W (S8)
Consult factory for Military Grade parts.
ORDER PART
NUMBER
LT1468CN8
LT1468CS8
LT1468IN8
LT1468IS8
S8 PART MARKING
1468
1468I
ELECTRICAL CHARACTERISTICS TA = 25°C, VCM = 0V unless otherwise noted.
SYMBOL PARAMETER
VOS Input Offset Voltage
IOS Input Offset Current
IB– Inverting Input Bias Current
IB+ Noninverting Input Bias Current
Input Noise Voltage
en Input Noise Voltage
in Input Noise Current
RIN Input Resistance
CIN Input Capacitance
Input Voltage Range +
Input Voltage Range –
CMRR Common Mode Rejection Ratio
PSRR
AVOL
Power Supply Rejection Ratio
Large-Signal Voltage Gain
VOUT Output Swing
IOUT Output Current
ISC Short-Circuit Current
CONDITIONS
0.1Hz to 10Hz
f = 10kHz
f = 10kHz
VCM = ±12.5V
Differential
VCM = ±12.5V
VCM = ±2.5V
VS = ±4.5V to ±15V
VOUT = ±12.5V, RL = 10k
VOUT = ±12.5V, RL = 2k
VOUT = ±2.5V, RL = 10k
VOUT = ±2.5V, RL = 2k
RL = 10k, VIN = ±1mV
RL = 2k, VIN = ±1mV
RL = 10k, VIN = ±1mV
RL = 2k, VIN = ±1mV
VOUT = ±12.5V
VOUT = ±2.5V
VOUT = 0V, VIN = ±0.2V
VSUPPLY
±15V
±5V
±5V to ±15V
±5V to ±15V
±5V to ±15V
±5V to ±15V
±5V to ±15V
±5V to ±15V
±15V
±15V
±15V
±15V
±5V
±15V
±5V
±15V
±5V
±15V
±15V
±5V
±5V
±15V
±15V
±5V
±5V
±15V
±5V
±15V
MIN
100
50
12.5
2.5
96
96
100
1000
500
1000
500
±13.0
±12.8
± 3.0
± 2.8
±15
±15
±25
TYP
30
50
13
3
– 10
0.3
5
0.6
240
150
4
13.5
3.5
–14.3
– 4.3
110
112
112
9000
5000
6000
3000
±13.6
±13.5
± 3.6
± 3.5
±22
±22
±40
MAX
75
175
50
±10
±40
–12.5
–2.5
UNITS
µV
µV
nA
nA
nA
µVP-P
nV/Hz
pA/Hz
M
k
pF
V
V
V
V
dB
dB
dB
V/mV
V/mV
V/mV
V/mV
V
V
V
V
mA
mA
mA
2


Part Number LT1468
Description 90MHz/ 22V/us 16-Bit Accurate Operational Amplifier
Maker Linear Technology
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LT1468 Datasheet PDF






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