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PDF LT1469IS8 Data sheet ( Hoja de datos )
| Número de pieza | LT1469IS8 | |
| Descripción | Dual 90MHz/ 22V/us 16-Bit Accurate Operational Amplifier | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Final Electrical Specifications
LT1469
Dual 90MHz, 22V/µs
16-Bit Accurate Operational Amplifier
FEATURES
DESCRIPTIO
February 2000
s 90MHz Gain Bandwidth, f = 100kHz
s Maximum Input Offset Voltage: 125µV
s Settling Time: 900ns (AV = –1, 150µV, 10V Step)
s 22V/µs Slew Rate
s Low Distortion: –96.5dB for 100kHz, 10VP-P
s Maximum Input Offset Voltage Drift: 3µV/°C
s Maximum Inverting Input Bias Current: 10nA
s Minimum DC Gain: 300V/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 1kΩ < RS < 20kΩ
s Specified at ±5V and ±15V Supplies
U
APPLICATIO S
s Precision Instrumentation
s High Accuracy Data Acquisition Systems
s 16-Bit DAC Current-to-Voltage Converter
s ADC Buffer
s Low Distortion Active Filters
s Photodiode Amplifiers
The LT®1469 is a dual, precision high speed operational
amplifier with 16-bit accuracy and 900ns settling to 150µV
for 10V signals. This unique blend of precision and AC
performance makes the LT1469 the optimum choice for
high accuracy applications such as DAC current-to-volt-
age conversion and ADC buffers. The initial accuracy and
drift characteristics of the input offset voltage and invert-
ing input bias current are tailored for inverting applica-
tions.
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 LT1469 improves large signal
performance compared to other precision op amps in
applications such as active filters and instrumentation
amplifiers.
The LT1469 is manufactured on Linear Technology’s
complementary bipolar process and is available in 8-pin
PDIP and SO packages. A single version,the LT1468, is
also available.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
16-Bit Accurate Single Ended to Differential ADC Buffer
VIN
2k
+
1/2 LT1469
–
10pF
2k
–
1/2 LT1469
+
200Ω
300pF
300pF
200Ω
+IN
LTC1604
–IN
16 BITS
333ksps
1469 TA01
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
1
1 page  
LT1469
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the temperature range
– 40°C ≤ TA ≤ 85°C, VCM = 0V unless otherwise noted. (Note 5)
SYMBOL PARAMETER
CMRR Common Mode Rejection Ratio
Minimum Supply Voltage
CONDITIONS
VCM = ±12.5V
VCM = ±2.5V
Guaranteed by PSRR
VSUPPLY
MIN TYP MAX UNITS
±15V q 92
dB
±5V q 92
dB
q ±4.5 V
PSRR
AVOL
Power Supply Rejection Ratio
Large-Signal Voltage Gain
VOUT Maximum Output Swing
IOUT Maximum Output Current
ISC Output Short-Circuit Current
SR Slew Rate
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, 1mV Overdrive
RL = 2k, 1mV Overdrive
RL = 10k, 1mV Overdrive
RL = 2k, 1mV Overdrive
VOUT = ±12.5V, 1mV Overdrive
VOUT = ±2.5V, 1mV Overdrive
VOUT = 0V, 0.2V Overdrive (Note 3)
AV = –10, RL = 2k (Note 6)
±15V
±15V
±5V
±5V
±15V
±15V
±5V
±5V
±15V
±5V
±15V
±15V
±5V
q 93
q 75
q 75
q 75
q 75
q ±12.8
q ±12.6
q ±2.8
q ±2.6
q ±7
q ±7
q ±12
q9
q6
dB
V/mV
V/mV
V/mV
V/mV
V
V
V
V
mA
mA
mA
V/µs
V/µs
GBW Gain Bandwidth Product
f = 100kHz, RL = 2k
±15V
±5V
q 45
q 40
MHz
MHz
Channel Separation
IS Supply Current
VOUT = ±12.5V, RL = 2k
VOUT = ±2.5V, RL = 2k
Per Amplifier
±15V
±5V
±15V
±5V
q 96
q 96
q
q
dB
dB
7 mA
6.8 mA
∆VOS Input Offset Voltage Match
±15V
±5V
q
q
800 µV
800 µV
∆IB–
∆IB+
∆CMRR
∆PSRR
Inverting Input Bias Current Match
Noninverting Input Bias Current Match
Common Mode Rejection Match
Power Supply Rejection Match
VCM = ±12.5V (Note 9)
VCM = ±2.5V (Note 9)
VS = ±4.5V to ±15V (Note 9)
±5V to ±15V q
±5V to ±15V q
±15V
±5V
q
q
q
89
89
90
± 78
±158
nA
nA
dB
dB
dB
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The inputs are protected by back-to-back diodes and two 100Ω
series resistors. If the differential input voltage exceeds 0.7V, the input
current should be limited to less than 10mA. Input voltages outside the
supplies will be clamped by ESD protection devices and input currents
should also be limited to less than 10mA.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum when the output is shorted indefinitely.
Note 4: The LT1469C and LT1469I are guaranteed functional over the
operating temperature range of – 40°C to 85°C.
Note 5: The LT1469C is guaranteed to meet specified performance from
0°C to 70°C and is designed, characterized and expected to meet specified
performance from – 40°C to 85°C but is not tested or QA sampled at these
temperatures. The LT1469I is guaranteed to meet specified performance
from – 40°C to 85°C.
Note 6: Slew rate is measured between ±8V on the output with ±12V
swing for ±15V supplies and ±2V on the output with ±3V swing for ±5V
supplies.
Note 7: Full-power bandwidth is calculated from the slew rate.
FPBW = SR/2πVP.
Note 8: This parameter is not 100% tested.
Note 9: ∆CMRR and ∆PSRR are defined as follows: 1) CMRR and PSRR
are measured in µV/V on each amplifier; 2) the difference between the two
sides is calculated in µV/V; 3) the result is converted to dB.
5
5 Page 
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
LT1469
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.189 – 0.197*
(4.801 – 5.004)
8 765
0.228 – 0.244
(5.791 – 6.197)
0.150 – 0.157**
(3.810 – 3.988)
12
0.010
(0.254
–
–
0.020
0.508)
×
45°
0.008 – 0.010
(0.203 – 0.254)
0.053 – 0.069
(1.346 – 1.752)
0°– 8° TYP
0.016 – 0.050
(0.406 – 1.270)
0.014 – 0.019
(0.355 – 0.483)
TYP
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
34
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
SO8 1298
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LT1469IS8.PDF ] | |
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