LINER LT1469IS8

Final Electrical Specifications
LT1469
Dual 90MHz, 22V/µs
16-Bit Accurate Operational Amplifier
February 2000
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DESCRIPTIO
FEATURES
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90MHz Gain Bandwidth, f = 100kHz
Maximum Input Offset Voltage: 125µV
Settling Time: 900ns (AV = –1, 150µV, 10V Step)
22V/µs Slew Rate
Low Distortion: –96.5dB for 100kHz, 10VP-P
Maximum Input Offset Voltage Drift: 3µV/°C
Maximum Inverting Input Bias Current: 10nA
Minimum DC Gain: 300V/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 1kΩ < RS < 20kΩ
Specified at ±5V and ±15V Supplies
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APPLICATIO S
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Precision Instrumentation
High Accuracy Data Acquisition Systems
16-Bit DAC Current-to-Voltage Converter
ADC Buffer
Low Distortion Active Filters
Photodiode Amplifiers
The 90MHz gain bandwidth ensures high open-loop gain
at frequency for reducing distortion. In noninverting applications 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.
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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-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.
TYPICAL APPLICATIO
16-Bit Accurate Single Ended to Differential ADC Buffer
+
200Ω
1/2 LT1469
–
300pF
VIN
+IN
10pF
2k
16 BITS
333ksps
LTC1604
–IN
2k
–
300pF
1469 TA01
200Ω
1/2 LT1469
+
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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LT1469
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ABSOLUTE
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PACKAGE/ORDER I FOR ATIO
(Note 1)
Total Supply Voltage (V + to V –) .............................. 36V
Input Current (Note 2) ........................................ ±10mA
Output Short-Circuit Duration (Note 3) ............ Indefinite
Operating Temperature Range (Note 4) .. – 40°C to 85°C
Specified Temperature Range (Note 5) ... – 40°C to 85°C
Maximum Junction Temperature .......................... 150°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ORDER PART
NUMBER
TOP VIEW
OUT A 1
–IN A 2
8
V+
7
OUT B
6
–IN B
5
+IN B
LT1469CS8
LT1469IS8
LT1469CN8
LT1469IN8
A
+IN A 3
V– 4
B
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 130°C/W (N8)
TJMAX = 150°C, θJA = 190°C/W (S8)
S8 PART MARKING
1469
1469I
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
TA = 25°C, VCM = 0V unless otherwise noted.
TYP
MAX
UNITS
VOS
Input Offset Voltage
CONDITIONS
±15V
±5V
30
50
125
200
µV
µV
IOS
Input Offset Current
±5V to ±15V
13
±50
nA
IB –
Inverting Input Bias Current
±5V to ±15V
3
±10
nA
IB +
Noninverting Input Bias Current
±5V to ±15V
–10
±40
nA
en
Input Noise Voltage Density
f = 10kHz
±5V to ±15V
5
nV/√Hz
in
Input Noise Current Density
f = 10kHz
±5V to ±15V
0.6
pA/√Hz
RIN
Input Resistance
VCM = ±12.5V
Differential
240
150
MΩ
kΩ
CIN
Input Capacitance
±15V
4
pF
VCM
Input Voltage Range (Positive)
±15V
±5V
13.5
3.5
V
V
Input Voltage Range (Negative)
±15V
±5V
Common Mode Rejection Ratio
VCM = ±12.5V
VCM = ±2.5V
Minimum Supply Voltage
Guaranteed by PSRR
PSRR
Power Supply Rejection Ratio
VS = ±4.5V to ±15V
AVOL
Large-Signal Voltage Gain
VOUT = ±12.5V, RL = 10k
VOUT = ±12.5V, RL = 2k
VOUT = ±2.5V, RL = 10k
VOUT = ±2.5V, RL = 2k
VOUT
Maximum Output Swing
IOUT
ISC
CMRR
2
VSUPPLY
±15V
±15V
±15V
±5V
MIN
100
50
12.5
2.5
–14.3
–4.3
96
96
–12.5
–2.5
110
112
±2.5
V
V
dB
dB
±4.5
V
100
112
dB
±15V
±15V
±5V
±5V
300
300
200
200
9000
5000
6000
3000
V/mV
V/mV
V/mV
V/mV
RL = 10k, 1mV Overdrive
RL = 2k, 1mV Overdrive
RL = 10k, 1mV Overdrive
RL = 2k, 1mV Overdrive
±15V
±15V
±5V
±5V
±13
±12.8
±3
±2.8
±13.6
±13.5
±3.6
±3.5
V
V
V
V
Maximum Output Current
VOUT = ±12.5V, 1mV Overdrive
VOUT = ±2.5V, 1mV Overdrive
±15V
±5V
±15
±15
±22
±22
mA
mA
Output Short-Circuit Current
VOUT = 0V, 0.2V Overdrive (Note 3)
±15V
±25
±40
mA
LT1469
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
CONDITIONS
SR
Slew Rate
FPBW
TA = 25°C, VCM = 0V unless otherwise noted.
VSUPPLY
MIN
TYP
AV = –10, RL = 2k (Note 6)
±15V
±5V
15
11
22
17
V/µs
V/µs
Full-Power Bandwidth
10V Peak, (Note 7)
3V Peak, (Note 7)
±15V
±5V
350
900
kHz
kHz
GBW
Gain Bandwidth Product
f = 100kHz, RL = 2k
±15V
±5V
90
88
MHz
MHz
tr, tf
Rise Time, Fall Time
AV = 1, 10% to 90%, 0.1V
±15V
±5V
11
12
ns
ns
OS
Overshoot
AV = 1, 0.1V
±15V
±5V
30
35
%
%
tPD
Propagation Delay
AV = 1, 50% VIN to 50% VOUT, 0.1V
±15V
±5V
9
10
ns
ns
tS
Settling Time
10V Step, 0.01%, AV = –1
10V Step, 150µV, AV = –1
5V Step, 0.01%, AV = –1
±15V
±15V
±5V
760
900
770
ns
ns
ns
THD
Total Harmonic Distortion
AV = 1, 10VP-P, 100kHz
±15V
– 96.5
dB
ROUT
Output Resistance
AV = 1, f = 100kHz
±15V
0.02
Ω
Channel Separation
VOUT = ±12.5V, RL = 2k
VOUT = ±2.5V, RL = 2k
±15V
±5V
120
120
dB
dB
IS
Supply Current
Per Amplifier
±15V
±5V
∆VOS
Input Offset Voltage Match
∆IB–
60
55
100
100
4.1
3.8
MAX
UNITS
5.2
5
mA
mA
±15V
±5V
225
350
µV
µV
Inverting Input Bias Current Match
±5V to ±15V
±18
nA
∆IB+
Noninverting Input Bias Current Match
±5V to ±15V
±78
nA
∆CMRR
Common Mode Rejection Match
VCM = ±12.5V (Note 9)
VCM = ±2.5V (Note 9)
∆PSRR
Power Supply Rejection Match
VS = ±4.5V to ±15V (Note 9)
±15V
±5V
93
93
dB
dB
97
dB
The ● denotes the specifications which apply over the temperature range 0°C ≤ TA ≤ 70°C, VCM = 0V unless otherwise noted.
SYMBOL PARAMETER
VOS
Input Offset Voltage
∆VOS/∆T
Input Offset Voltage Drift
CONDITIONS
VSUPPLY
±15V
±5V
MIN
●
●
(Note 8)
±5V to ±15V ●
(Note 8)
±5V to ±15V ●
Input Offset Current
∆IOS/∆T
Input Offset Current Drift
IB –
Inverting Input Bias Current
∆IB –/∆T
Inverting Input Bias Current Drift
IB +
Noninverting Input Bias Current
VCM
Input Voltage Range (Positive)
±15V
±5V
●
●
Input Voltage Range (Negative)
±15V
±5V
●
●
±15V
±5V
●
●
Common Mode Rejection Ratio
1
±5V to ±15V ●
IOS
CMRR
TYP
±5V to ±15V
350
350
µV
µV
3
±80
40
●
nA
nA
pA/°C
±60
12.5
2.5
nA
V
V
–12.5
–2.5
94
94
µV/°C
pA/°C
±20
±5V to ±15V ●
VCM = ±12.5V
VCM = ±2.5V
UNITS
60
±5V to ±15V ●
(Note 8)
MAX
V
V
dB
dB
3
LT1469
ELECTRICAL CHARACTERISTICS
0°C ≤ TA ≤ 70°C, VCM = 0V unless otherwise noted.
SYMBOL PARAMETER
Minimum Supply Voltage
The ● denotes the specifications which apply over the temperature range
CONDITIONS
VSUPPLY
Guaranteed by PSRR
MIN
TYP
●
MAX
UNITS
±4.5
V
PSRR
Power Supply Rejection Ratio
VS = ±4.5V to ±15V
●
95
dB
AVOL
Large-Signal Voltage Gain
VOUT = ±12.5V, RL = 10k
VOUT = ±12.5V, RL = 2k
VOUT = ±2.5V, RL = 10k
VOUT = ±2.5V, RL = 2k
±15V
±15V
±5V
±5V
●
●
●
●
100
100
100
100
V/mV
V/mV
V/mV
V/mV
VOUT
Maximum Output Swing
RL = 10k, 1mV Overdrive
RL = 2k, 1mV Overdrive
RL = 10k, 1mV Overdrive
RL = 2k, 1mV Overdrive
±15V
±15V
±5V
±5V
●
●
●
●
±12.9
±12.7
±2.9
±2.7
V
V
V
V
IOUT
Maximum Output Current
VOUT = ±12.5V, 1mV Overdrive
VOUT = ±2.5V, 1mV Overdrive
±15V
±5V
●
●
±12.5
±12.5
mA
mA
ISC
Output Short-Circuit Current
VOUT = 0V, 0.2V Overdrive (Note 3)
±15V
●
±17
mA
SR
Slew Rate
AV = –10, RL = 2k (Note 6)
±15V
±5V
●
●
13
9
V/µs
V/µs
GBW
Gain Bandwidth Product
f = 100kHz, RL = 2k
±15V
±5V
●
●
55
50
MHz
MHz
Channel Separation
VOUT = ±12.5V, RL = 2k
VOUT = ±2.5V, RL = 2k
±15V
±5V
●
●
98
98
dB
dB
IS
Supply Current
Per Amplifier
±15V
±5V
●
●
6.5
6.3
mA
mA
∆VOS
Input Offset Voltage Match
±15V
±5V
●
●
600
600
µV
µV
∆IB –
Inverting Input Bias Current Match
±5V to ±15V ●
±38
nA
∆IB +
Noninverting Input Bias Current Match
±5V to ±15V ●
±118
nA
∆CMRR
Common Mode Rejection Match
VCM = ±12.5V (Note 9)
VCM = ±2.5V (Note 9)
∆PSRR
Power Supply Rejection Match
VS = ±4.5V to ±15V (Note 9)
±15V
±5V
●
●
91
91
dB
dB
●
92
dB
The ● denotes the specifications which apply over the temperature range – 40°C ≤ TA ≤ 85°C, VCM = 0V unless otherwise noted.
(Note 5)
SYMBOL PARAMETER
VOS
Input Offset Voltage
∆VOS/∆T
Input Offset Voltage Drift
IOS
Input Offset Current
∆IOS/∆T
Input Offset Current Drift
IB –
Inverting Input Bias Current
∆IB –/∆T
Inverting Input Bias Current Drift
CONDITIONS
VSUPPLY
±15V
±5V
(Note 8)
MIN
●
●
±5V to ±15V ●
1
±5V to ±15V ●
(Note 8)
(Note 8)
±5V to ±15V ●
±5V to ±15V
±15V
±5V
●
●
Input Voltage Range (Negative)
±15V
±5V
●
●
500
500
µV
µV
4
µV/°C
nA
pA/°C
±40
80
±5V to ±15V ●
Noninverting Input Bias Current
Input Voltage Range (Positive)
UNITS
120
●
VCM
MAX
±120
±5V to ±15V ●
IB +
4
TYP
nA
pA/°C
±80
12.5
2.5
nA
V
V
–12.5
–2.5
V
V
LT1469
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the temperature range
– 40°C ≤ TA ≤ 85°C, VCM = 0V unless otherwise noted. (Note 5)
SYMBOL PARAMETER
CONDITIONS
VSUPPLY
CMRR
Common Mode Rejection Ratio
VCM = ±12.5V
VCM = ±2.5V
±15V
±5V
Minimum Supply Voltage
Guaranteed by PSRR
MIN
●
●
TYP
MAX
92
92
dB
dB
±4.5
●
UNITS
V
PSRR
Power Supply Rejection Ratio
VS = ±4.5V to ±15V
●
93
dB
AVOL
Large-Signal Voltage Gain
VOUT = ±12,5V, RL = 10k
VOUT = ±12.5V, RL = 2k
VOUT = ±2.5V, RL = 10k
VOUT = ±2.5V, RL = 2k
±15V
±15V
±5V
±5V
●
●
●
●
75
75
75
75
V/mV
V/mV
V/mV
V/mV
VOUT
Maximum Output Swing
RL = 10k, 1mV Overdrive
RL = 2k, 1mV Overdrive
RL = 10k, 1mV Overdrive
RL = 2k, 1mV Overdrive
±15V
±15V
±5V
±5V
●
●
●
●
±12.8
±12.6
±2.8
±2.6
IOUT
Maximum Output Current
VOUT = ±12.5V, 1mV Overdrive
VOUT = ±2.5V, 1mV Overdrive
±15V
±5V
●
●
±7
±7
V
V
V
V
mA
mA
ISC
Output Short-Circuit Current
VOUT = 0V, 0.2V Overdrive (Note 3)
±15V
●
±12
mA
SR
Slew Rate
AV = –10, RL = 2k (Note 6)
±15V
±5V
●
●
9
6
V/µs
V/µs
GBW
Gain Bandwidth Product
f = 100kHz, RL = 2k
±15V
±5V
●
●
45
40
MHz
MHz
Channel Separation
VOUT = ±12.5V, RL = 2k
VOUT = ±2.5V, RL = 2k
±15V
±5V
●
●
96
96
dB
dB
IS
Supply Current
Per Amplifier
±15V
±5V
●
●
7
6.8
mA
mA
∆VOS
Input Offset Voltage Match
±15V
±5V
●
●
800
800
µV
µV
∆IB –
Inverting Input Bias Current Match
±5V to ±15V ●
±78
nA
∆IB +
Noninverting Input Bias Current Match
±5V to ±15V ●
±158
nA
∆CMRR
Common Mode Rejection Match
VCM = ±12.5V (Note 9)
VCM = ±2.5V (Note 9)
∆PSRR
Power Supply Rejection Match
VS = ±4.5V to ±15V (Note 9)
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
±15V
±5V
●
●
89
89
dB
dB
●
90
dB
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.
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LT1469
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APPLICATIO S I FOR ATIO
Microvolt level error voltages can also be generated in the
external circuitry. Thermocouple effects caused by temperature gradients across dissimilar metals at the contacts to the inputs can exceed the inherent drift of the
amplifier. Air currents over device leads should be minimized, package leads should be short and the two input
leads should be as close together as possible and maintained at the same temperature.
Layout and Passive Components
The LT1469 requires attention to detail in board layout in
order to maximize DC and AC performance. For best AC
results (for example, fast settling time) use a ground
plane, short lead lengths and RF quality bypass capacitors
(0.01µF to 0.1µF) in parallel with low ESR bypass capacitors (1µF to 10µF tantalum). For best DC performance, use
“star” grounding techniques, equalize input trace lengths
and minimize leakage (i.e., 1.5GΩ of leakage between an
input and a 15V supply will generate 10nA—equal to the
maximum IB – specification).
The parallel combination of the feedback resistor and gain
setting resistor on the inverting input can combine with
the input capacitance to form a pole which can cause
peaking or even oscillations. For feedback resistors greater
than 2k, a feedback capacitor of value CF > RG • CIN/RF
should be used to cancel the input pole and optimize
dynamic performance. For applications where the DC
noise gain is one, and a large feedback resistor is used, CF
should be greater than or equal to CIN. An example would
be a DAC I-to-V converter as shown on the back page of the
data sheet where the DAC can have many tens of picofarads of output capacitance. Another example would be a
gain of –1 with 5k resistors; a 5pF to 10pF capacitor should
be added across the feedback resistor.
Board leakage can be minimized by encircling the input
circuitry with a guard ring operated at a potential close to
that of the inputs: for inverting configurations tie the ring
to ground, in noninverting connections tie the ring to the
inverting input (note the input capacitance will increase
which may require a compensating capacitor as discussed
below).
CF
RF
RG
–
CIN
VIN
1/2 LT1469
VOUT
+
1469 F01
Figure 1. Nulling Input Capacitance
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LT1469
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APPLICATIO S I FOR ATIO
Input Considerations
Each input of the LT1469 is protected with a 100Ω series
resistor and back-to-back diodes across the bases of the
input devices. If large differential input voltages are anticipated, limit the input current to less than 10mA with an
external series resistor. Each input also has two ESD
clamp diodes—one to each supply. If an input is driven
beyond the supply, limit the current with an external
resistor to less than 10mA.
The LT1469 employs bias current cancellation at the
inputs. The inverting input current is trimmed at zero
common mode voltage to minimize errors in inverting
applications such as I-to-V converters. The noninverting
input current is not trimmed and has a wider variation and
therefore a larger maximum value. As the input offset
current can be greater than either input current, the use of
balanced source resistance is NOT recommended as it
actually degrades DC accuracy and also increases noise.
+IN
R1
100Ω Q1
The input bias currents vary with common mode voltage.
The cancellation circuitry was not designed to track this
common mode voltage because the settling time would
have been adversely affected.
The LT1469 inputs can be driven to the negative supply
and to within 0.5V of the positive supply without phase
reversal. As the input moves closer than 0.5V to the
positive supply, the output reverses phase.
Total Input Noise
The total input noise of the LT1469 is optimized for a
source resistance between 1k and 20k. Within this range,
the total input noise is dominated by the noise of the
source resistance itself. When the source resistance is
below 1k, voltage noise of the amplifier dominates. When
the source resistance is above 20k, the input noise current
is the dominant contributor.
R1
Q2 100Ω
–IN
1469 F02
Figure 2. Input Stage Protection
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LT1469
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APPLICATIO S I FOR ATIO
Capacitive Loading
The settling of the DAC I-to-V converter on the back page
was measured using the exact methods of AN74. The
optimum nulling of the DAC output capacitance requires
20pF across the 6k feedback resistor. The theoretical limit
for 16-bit settling is 11.1 times this RC time constant or
1.33µs. The actual settling time is 1.7µs at the output of the
LT1469. The LT1469 is the fastest Linear Technology
amplifier in this application.
The LT1469 drives capacitive loads of up to 100pF in unitygain and 300pF in a gain of –1. When there is a need to
drive a larger capacitive load, a small series resistor
should be inserted between the output and the load. In
addition, a capacitor should be added between the output
and the inverting input as shown in Figure 3.
Settling Time
The RC output noise filter adds a slight settling time delay
of 100ns but reduces the noise bandwidth to 1.6MHz
which increases the output resolution for 16-bit accuracy.
The LT1469 is a single stage amplifier with an optimal
thermal layout that leads to outstanding settling performance. Measuring settling, even at the 12-bit level is very
challenging, and at the 16-bit level requires a great deal of
subtlety and expertise. Fortunately, there are two excellent
Linear Technology reference sources for settling measurements—Application Notes 47 and 74. Appendix B of
AN47 is a vital primer on 12-bit settling measurements
and AN74 extends the state-of-the-art while concentrating
on settling time with a 16-bit current output DAC input.
RF
RO ≥ (1 + RF/RG)/(2π • CL • 5MHz)
RF ≥ 10RO
CF = (2RO/RF)CL
CF
RG
–
1/2 LT1469
VIN
+
RO
VOUT
CL
1469 F03
Figure 3. Driving Capacitive Loads
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LT1469
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SI PLIFIED SCHE ATIC
V+
I1
I5
I2
Q10
Q8
+ IN
Q1
Q2
– IN Q5
Q6
Q7
Q3
I3
I4
OUT
Q9
Q4
BIAS
Q11
C
I6
V–
1469 SS
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LT1469
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PACKAGE DESCRIPTIO
Dimensions in inches (millimeters) unless otherwise noted.
N8 Package
8-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.400*
(10.160)
MAX
8
7
6
5
1
2
3
4
0.255 ± 0.015*
(6.477 ± 0.381)
0.300 – 0.325
(7.620 – 8.255)
0.009 – 0.015
(0.229 – 0.381)
(
+0.035
0.325 –0.015
8.255
+0.889
–0.381
)
0.045 – 0.065
(1.143 – 1.651)
0.065
(1.651)
TYP
0.100
(2.54)
BSC
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
10
0.130 ± 0.005
(3.302 ± 0.127)
0.125
(3.175) 0.020
MIN (0.508)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
N8 1098
LT1469
U
PACKAGE DESCRIPTIO
Dimensions in inches (millimeters) unless otherwise noted.
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.189 – 0.197*
(4.801 – 5.004)
8
7
6
5
0.150 – 0.157**
(3.810 – 3.988)
0.228 – 0.244
(5.791 – 6.197)
1
0.010 – 0.020
× 45°
(0.254 – 0.508)
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
2
3
4
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
SO8 1298
11
LT1469
U
TYPICAL APPLICATIO
16-Bit DAC I-to-V Converter and Reference Inverter for Bipolar Output Swing (VOUT = –10V to 10V)
REF
+
1/2 LT1469
–
15pF
20pF
16 BITS
DAC INPUTS
–
LTC1597
2k
1/2 LT1469
VOUT
+
50pF
1469 TA03
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COMMENTS
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Single 90MHz, 22V/µs, 16-Bit Accurate Op Amp
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LTC1595/LTC1596
16-Bit Serial Multiplying IOUT DAC
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±1LSB Max INL/DNL, Low Glitch, On-Chip Bipolar Resistors
LT1604
16-Bit, 333ksps Sampling ADC
±2.5V Input, SINAD = 90dB, THD = –100dB
LTC1605
Single 5V, 16-Bit, 100ksps Sampling ADC
Low Power, ±10V Inputs, Parallel/Byte Interface
12
Linear Technology Corporation
1469i LT/TP 0200 4K • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 ● FAX: (408) 434-0507 ● www.linear-tech.com
 LINEAR TECHNOLOGY CORPORATION 2000