LINER LT1220CH

LT1220
45MHz, 250V/µs
Operational Amplifier
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FEATURES
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DESCRIPTIO
The LT®1220 is a high speed operational amplifier with
superior DC performance. The LT1220 features reduced
input offset voltage, lower input bias currents and higher
DC gain than devices with comparable bandwidth and slew
rate. The circuit is a single gain stage that includes
proprietary DC gain enhancement circuitry to obtain precision with high speed. The high gain and fast settling time
make the circuit an ideal choice for data acquisition
systems. The circuit is also capable of driving large
capacitive loads which makes it useful in buffer or cable
driver applications.
Gain-Bandwidth: 45MHz
Unity-Gain Stable
Slew Rate: 250V/µs
C-LoadTM Op Amp Drives Capacitive Loads
Maximum Input Offset Voltage: 1mV
Maximum Input Bias Current: 300nA
Maximum Input Offset Current: 300nA
Minimum Output Swing Into 500Ω: ±12V
Minimum DC Gain: 20V/mV, RL = 500Ω
Settling Time to 0.1%: 75ns, 10V Step
Settling Time to 0.01%: 95ns, 10V Step
Differential Gain: 0.1%, AV = 2, RL = 150Ω
Differential Phase: 0.2°, AV = 2, RL = 150Ω
The LT1220 is a member of a family of fast, high performance amplifiers that employ Linear Technology
Corporation’s advanced complementary bipolar processing. For applications with gains of 4 or greater the LT1221
can be used, and for gains of 10 or greater the LT1222 can
be used for increased bandwidth.
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APPLICATIO S
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Wideband Amplifiers
Buffers
Active Filters
Video and RF Amplification
Cable Drivers
8-, 10-, 12-Bit Data Acquisition Systems
, LTC and LT are registered trademarks of Linear Technology Corporation
C-Load is a trademark of Linear Technology Corporation
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TYPICAL APPLICATIO
Two Op Amp Instrumentation Amplifier
R5
220Ω
R1
10k
R2
1k
–
LT1220
–
VIN
Inverter Pulse Response
R4
10k
+
R3
1k
–
LT1220
+
VOUT
+
GAIN = [R4/R3][1 + (1/2)(R2/R1 + R3/R4) + (R2 + R3)/R5] = 102
TRIM R5 FOR GAIN
TRIM R1 FOR COMMON MODE REJECTION
BW = 450kHz
LT1220 • TA01
RF = RG = 1k
VS = ±15V
VIN = 20V
f = 2MHz
LT1220 • TA02
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LT1220
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ABSOLUTE
RATI GS (Note 1)
Total Supply Voltage (V + to V –) .............................. 36V
Differential Input Voltage ........................................ ±6V
Input Voltage .......................................................... ±VS
Output Short-Circuit Duration (Note 2) ........... Indefinite
Specified Temperature Range
LT1220C (Note 3) ................................... 0°C to 70°C
LT1220M (OBSOLETE) ............... – 55°C to 125°C
Operating Temperature Range
LT1220C ........................................... – 40°C TO 85°C
LT1220M (OBSOLETE) ............... – 55°C to 150°C
Maximum Junction Temperature (See Below)
Plastic Package ............................................... 150°C
Ceramic Package (OBSOLETE) .................. 175°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
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PACKAGE/ORDER I FOR ATIO
8
NULL 1
7 V+
6 VOUT
–IN 2
+IN 3
TOP VIEW
ORDER PART
NUMBER
TOP VIEW
NULL
LT1220CH
LT1220MH
5 NC
NULL 1
8
NULL
–IN 2
7
V+
+IN 3
6
VOUT
V– 4
5
NC
ORDER PART
NUMBER
LT1220CN8
LT1220CS8
S8 PART MARKING
S8 PACKAGE
N8 PACKAGE
8-LEAD PLASTIC DIP 8-LEAD PLASTIC SOIC
TJMAX = 150°C, θJA = 130°C/W (N)
TJMAX = 150°C, θJA = 190°C/W (S)
J8 PACKAGE
8-LEAD CERAMIC DIP
TJMAX = 175°C, θJA = 100°C/W (J)
4
V–
H PACKAGE
8-LEAD TO-5 METAL CAN
TJMAX = 175°C, θJA = 150°C/W
1220
ORDER PART
NUMBER
OBSOLETE PACKAGE LT1220MJ8
OBSOLETE PACKAGE
Consider the N8 or S8 Packages for Alternate Source
Consider the N8 Package for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
SYMBOL
VOS
IOS
IB
en
in
RIN
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Current
Input Resistance
CIN
Input Capacitance
Input Voltage Range (Positive)
Input Voltage Range (Negative)
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Swing
Output Current
Slew Rate
Full Power Bandwidth
Gain-Bandwidth
CMRR
PSRR
AVOL
VOUT
IOUT
SR
GBW
2
TA = 25°C, VS = ±15V, VCM = 0V, unless otherwise specified.
CONDITIONS
(Note 4)
f = 10kHz
f = 10kHz
VCM = ±12V
Differential
MIN
20
12
VCM = ±12V
VS = ±5V to ±15V
VOUT = ±10V, RL = 500Ω
RL = 500Ω
VOUT = ±12V
(Note 5)
10V Peak (Note 6)
f = 1MHz
92
90
20
12
24
200
TYP
0.5
100
100
17
2
45
150
2
14
– 13
114
94
50
13
26
250
4
45
MAX
1
300
300
– 12
UNITS
mV
nA
nA
nV/√Hz
pA/√Hz
MΩ
kΩ
pF
V
V
dB
dB
V/mV
±V
mA
V/µs
MHz
MHz
LT1220
ELECTRICAL CHARACTERISTICS
SYMBOL
tr, tf
ts
PARAMETER
Rise Time, Fall Time
Overshoot
Propagation Delay
Settling Time
Differential Gain
Differential Phase
RO
IS
Output Resistance
Supply Current
VS = ±15V, TA = 25°C, VCM = 0V, unless otherwise specified.
CONDITIONS
AV = 1, 10% to 90%, 0.1V
AV = 1, 0.1V
AV = 1, 50% VIN to 50% VOUT, 0.1V
10V Step, 0.1%
10V Step, 0.01%
f = 3.58MHz, RL = 150Ω (Note 7)
f = 3.58MHz, RL = 1k (Note 7)
f = 3.58MHz, RL = 150Ω (Note 7)
f = 3.58MHz, RL = 1k (Note 7)
AV = 1, f = 1MHz
MIN
TYP
2.5
5
4.9
75
95
0.10
0.02
0.20
0.03
1
8
MAX
10.5
UNITS
ns
%
ns
ns
ns
%
%
DEG
DEG
Ω
mA
The ● denotes the specifications which apply over the temperature range 0°C ≤ TA ≤ 70°C, otherwise specifications are at TA = 25°C.
VS = ±15V, VCM = 0V, unless otherwise specified.
SYMBOL
VOS
IOS
IB
CMRR
PSRR
AVOL
VOUT
IOUT
SR
IS
PARAMETER
Input Offset Voltage
Input VOS Drift
Input Offset Current
Input Bias Current
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Swing
Output Current
Slew Rate
Supply Current
CONDITIONS
(Note 4)
MIN
●
●
●
●
VCM = ±12V
VS = ±5V to ±15V
VOUT = ±10V, RL = 500Ω
RL = 500Ω
VOUT = ±12V
(Note 5)
●
●
●
●
●
●
92
86
20
12
24
180
●
TYP
0.5
20
100
100
114
94
50
13
26
250
8
MAX
3.5
400
400
11
UNITS
mV
µV/°C
nA
nA
dB
dB
V/mV
±V
mA
V/µs
mA
The ● denotes the specifications which apply over the temperature range – 55°C ≤ TA ≤ 125°C, otherwise specifications are at
TA = 25°C. VS = ±15V, VCM = 0V, unless otherwise specified.
SYMBOL
VOS
IOS
IB
CMRR
PSRR
AVOL
VOUT
PARAMETER
Input Offset Voltage
Input VOS Drift
Input Offset Current
Input Bias Current
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Swing
IOUT
Output Current
SR
IS
Slew Rate
Supply Current
CONDITIONS
(Note 4)
MIN
●
●
●
●
VCM = ±12V
VS = ±5V to ±15V
VOUT = ±10V, RL = 500Ω
RL = 500Ω
RL = 1k
VOUT = ±10V
VOUT = ±12V
(Note 5)
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: A heat sink may be required when the output is shorted indefinitely.
Note 3: Commercial parts are designed to operate over – 40°C to 85°C, but
are not tested nor guaranteed beyond 0°C to 70°C. Industrial grade parts
specified and tested over –40°C to 85°C are available on special request.
Consult factory.
●
●
●
●
●
●
●
●
●
92
82
5
10
12
20
12
130
TYP
0.5
20
100
100
114
94
50
13
13
26
13
250
8
MAX
4
800
1000
11
UNITS
mV
µV/°C
nA
nA
dB
dB
V/mV
±V
±V
mA
mA
V/µs
mA
Note 4: Input offset voltage is pulse tested and is exclusive of warm-up drift.
Note 5: Slew rate is measured between ±10V on an output swing of ±12V.
Note 6: FPBW = SR/2πVP.
Note 7: Differential Gain and Phase are tested in AV = 2 with five amps in
series. Attenuators of 1/2 are used as loads (75Ω, 75Ω and 499Ω, 499Ω).
3
LT1220
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TYPICAL PERFORMANCE CHARACTERISTICS
Input Common Mode Range
vs Supply Voltage
Supply Current vs Supply Voltage
and Temperature
15
+VCM
10
–VCM
5
MAGNITUDE OF OUTPUT VOLATGE (V)
TA = 25°C
TA = 25°C
∆VOS = 0.5mV
SUPPLY CURRENT (mA)
8.5
8.0
7.5
0
5
10
15
SUPPLY VOLTAGE (±V)
5
10
15
SUPPLY VOLTAGE (±V)
0
20
15
+VSW
10
–VSW
5
Output Voltage Swing
vs Resistive Load
500
30
TA = 25°C
∆VOS = 30mV
INPUT BIAS CURRENT (nA)
±15V SUPPLIES
15
10
±5V SUPPLIES
5
Open-Loop Gain
vs Resistive Load
110
TA = 25°C
VS = ±15V
400
20
LT1220 • TPC03
Input Bias Current
vs Input Common Mode Voltage
20
5
10
15
SUPPLY VOLTAGE (±V)
0
20
LT1220 • TPC02
LT1220 • TPC01
25
TA = 25°C
RL = 500Ω
∆VOS = 30mV
0
7.0
0
TA = 25°C
300
100
200
OPEN-LOOP GAIN (dB)
MAGNITUDE OF INPUT VOLTAGE (V)
20
9.0
20
OUTPUT VOLTAGE SWING (VP-P)
Output Voltage Swing
vs Supply Voltage
IB+
100
IB–
0
–100
–200
–300
VS = ±15V
90
VS = ±5V
80
70
– 400
0
100
1k
LOAD RESISTANCE (Ω)
10k
– 500
–15
60
–10
–5
10
0
5
INPUT COMMON MODE VOLTAGE (V)
Output Short-Circuit Current
vs Temperature
INPUT VOLTAGE NOISE (nV/√Hz)
OUTPUT SHORT-CIRCUIT CURRENT (mA)
35
30
25
120
100
80
60
40
20
0
–25
0
25
75
50
TEMPERATURE (°C)
100
125
LT1220 • TPC07
4
100
VS = ±15V
TA = 25°C
AV = 100
140
40
20
–50
Power Supply Rejection Ratio
vs Frequency
160
VS = ±5V
10k
LT1220 • TPC06
Input Noise Spectral Density
45
100
1k
LOAD RESISTANCE (Ω)
10
LT1220 • TPC05
LT1220 • TPC04
50
15
POWER SUPPLY REJECTION RATIO (dB)
10
10
100
1k
10k
FREQUENCY (Hz)
100k
LT1220 • TPC08
VS = ±15V
TA = 25°C
80
60
+PSRR
40
–PSRR
20
0
100
1k
100k
1M
10k
FREQUENCY (Hz)
10M
100M
LT1220 • TPC09
LT1220
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TYPICAL PERFORMANCE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency
100
10
8
8
6
60
40
6
10mV
4
2
0
–2
–4
10mV
–6
20
10M
100k
1M
FREQUENCY (Hz)
–8
25
0
100
75
100
50
SETTLING TIME (ns)
125
60
60
40
40
VS = ±15V
20
VS = ±5V
2
0
C = 100pF
–2
C = 50pF
–4
–8
10M
–20
100M
C=0
C = 500pF
–6
TA = 25°C
100k
1M
10k
FREQUENCY (Hz)
VS = ±15V
TA = 25°C
AV = 1
4
0
C = 1000pF
10
FREQUENCY (MHz)
1
LT1220 • TPC13
0.1
100
275
SLEW RATE (V/µs)
48
44
42
40
VS = ±15V
AV = –1
RIN = RF = 1k
+SR
250
–SR
225
200
175
125
LT1220 • TPC16
1M
10M
FREQUENCY (Hz)
150
–50
–25
0
25
75
50
TEMPERATURE (°C)
100M
Total Harmonic Distortion
vs Frequency
300
46
100k
LT1220 • TPC15
Slew Rate vs Temperature
VS = ±15V
100
1
LT1220 • TPC14
50
0
25
75
50
TEMPERATURE (°C)
10
0.01
10k
–10
Gain-Bandwidth vs Temperature
125
100
6
VOLTAGE MAGNITUDE (dB)
VS = ±5V
0
75
100
50
SETTLING TIME (ns)
Closed-Loop Output Impedance
vs Frequency
VS = ±15V
TA = 25°C
AV = –1
8
80
20
25
0
1mV
LT1220 • TPC12
10
PHASE MARGIN (DEG)
VOLTAGE GAIN (dB)
80
10mV
LT1220 • TPC11
VS = ±15V
–25
–4
Frequency Response
vs Capacitive Load
100
38
–50
–2
–10
Voltage Gain and Phase
vs Frequency
1k
0
–8
LT1220 • TPC10
–20
100
2
–10
100M
1mV
10mV
4
–6
OUTPUT IMPEDANCE (Ω)
10k
1mV
TOTAL HARMONIC DISTORTION AND NOISE (%)
1k
1mV
OUTPUT SWING (V)
80
0
GAIN-BANDWIDTH (MHz)
Output Swing and Error
vs Settling Time (Inverting)
10
VS = ±15V
TA = 25°C
OUTPUT SWING (V)
COMMON MODE REJECTION RATIO (dB)
120
Output Swing and Error
vs Settling Time (Noninverting)
100
125
LT1220 • TPC24
0.01
VS = ±15V
VO = 3VRMS
RL = 500Ω
AV = –1
0.001
AV = 1
0.0001
10
100
1k
10k
FREQUENCY (Hz)
100k
LT1220 • TPC18
5
LT1220
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TYPICAL PERFORMANCE CHARACTERISTICS
Small Signal, AV = 1
VIN = 100mV
f = 5MHz
LT1220 • TPC19
RG = 0
VS = ±15V
LT1220 • TPC20
VIN = 100mV
f = 5MHz
LT1220 • TPC22
RF = RG = 1k
VS = ±15V
VIN = 20V
f = 2MHz
RG = 0
VS = ±15V
VIN = 10V
f = 20kHz
LT1220 • TPC21
Small Signal, AV = – 1,
CL = 1,000pF
Large Signal, AV = – 1
Small Signal, AV = – 1
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RF = RG = 1k
VS = ±15V
VIN = 20V
f = 2MHz
LT1220 • TPC23
RF = RG = 1k
VS = ±15V
VIN = 200mV
f = 200kHz
LT1220 • TPC24
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RG = 0
VS = ±15V
Large Signal, AV = 1,
CL = 10,000pF
Large Signal, AV = 1
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APPLICATIONS INFORMATION
The LT1220 may be inserted directly into HA2505/15/25,
HA2541/2/4, AD817, AD847, EL2020, EL2044 and LM6361
applications, provided that the nulling circuitry is removed.
The suggested nulling circuit for the LT1220 is shown in
the following figure.
Offset Nulling
V+
5k
1
3
+
0.1µF
8
7
LT1220
2
–
6
4
0.1µF
V–
6
LT1220 • AI01
Layout and Passive Components
The LT1220 amplifier is easy to apply and tolerant of less
than ideal layouts. For maximum performance (for example, fast settling time) use a ground plane, short lead
lengths and RF-quality bypass capacitors (0.01µF to 0.1µF).
For high driver current applications use low ESR bypass
capacitors (1µF to 10µF tantalum). Sockets should be
avoided when maximum frequency performance is required, although low profile sockets can provide reasonable performance up to 50MHz. For more details see
Design Note 50. Feedback resistors greater than 5k are not
recommended because a pole is formed with the input
capacitance which can cause peaking or oscillations.
LT1220
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APPLICATIONS INFORMATION
Input Considerations
Bias current cancellation circuitry is employed on the
inputs of the LT1220 so the input bias current and input
offset current have identical specifications. For this reason,
matching the impedance on the inputs to reduce bias
current errors is not necessary.
Capacitive Loading
The LT1220 is stable with capacitive loads. This is accomplished by sensing the load induced output pole and adding
compensation at the amplifier gain node. As the capacitive
load increases, both the bandwidth and phase margin
decrease. There will be peaking in the frequency domain as
shown in the curve of Frequency Response vs Capacitive
Load. The small-signal transient response will have more
overshoot as shown in the photo of the small-signal
response with 1000pF load. The large-signal response with
a 10,000pF load shows the output slew rate being limited
to 4V/µs by the short-circuit current. The LT1220 can drive
coaxial cable directly, but for best pulse fidelity a resistor of
value equal to the characteristic impedance of the cable
(i.e., 75Ω) should be placed in series with the output. The
other end of the cable should be terminated with the same
value resistor to ground.
DAC Current-to-Voltage Amplifier
The high gain, low offset voltage, low input bias current,
and fast settling of the LT1220 make it particularly useful
as an I/V converter for current output DACs. A typical
application is shown with a 565A type, 12-bit, 2mA fullscale output current DAC. The 5k resistor around the
LT1220 is internal to the DAC and gives a 10V full-scale
output voltage. A 5pF capacitor in parallel with the feedback
resistor compensates for the DAC output capacitance and
improves settling. The output of the LT1220 settles to
1/2LSB (1.2mV) in less than 300ns. The accuracy of this
circuit is equal to:
VERROR = VOS + (IOS • 5kΩ) + (VOUT/AVOL)
At room temperature the worst-case error is 3mV (1.2LSB).
Typically the error is 1.2mV (1/2LSB). Over the commercial
temperature range the worse-case error is 6mV (2.5LSB).
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SI PLIFIED SCHE ATIC
V+ 7
NULL
1
8
BIAS 1
BIAS 2
6 OUT
+IN 3
2 –IN
V– 4
LT1220 • SS
7
LT1220
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PACKAGE DESCRIPTIO
H Package
8-Lead TO-5 Metal Can (.200 Inch PCD)
(Reference LTC DWG # 05-08-1320)
0.335 – 0.370
(8.509 – 9.398)
DIA
0.305 – 0.335
(7.747 – 8.509)
0.040
(1.016)
MAX
0.050
(1.270)
MAX
SEATING
PLANE
0.165 – 0.185
(4.191 – 4.699)
GAUGE
PLANE
0.010 – 0.045*
(0.254 – 1.143)
REFERENCE
PLANE
0.500 – 0.750
(12.700 – 19.050)
0.016 – 0.021**
(0.406 – 0.533)
0.027 – 0.045
(0.686 – 1.143)
45°TYP
0.028 – 0.034
(0.711 – 0.864)
PIN 1
0.200
(5.080)
TYP
0.110 – 0.160
(2.794 – 4.064)
INSULATING
STANDOFF
*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND 0.045" BELOW THE REFERENCE PLANE
0.016 – 0.024
**FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS
(0.406 – 0.610)
H8(TO-5) 0.200 PCD 1197
OBSOLETE PACKAGE
8
LT1220
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PACKAGE DESCRIPTIO
J8 Package
8-Lead CERDIP (Narrow .300 Inch, Hermetic)
(Reference LTC DWG # 05-08-1110)
CORNER LEADS OPTION
(4 PLCS)
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
0.005
(0.127)
MIN
0.405
(10.287)
MAX
8
7
6
5
0.025
(0.635)
RAD TYP
0.220 – 0.310
(5.588 – 7.874)
1
2
0.300 BSC
(0.762 BSC)
3
4
0.200
(5.080)
MAX
0.015 – 0.060
(0.381 – 1.524)
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE
OR TIN PLATE LEADS
0.045 – 0.065
(1.143 – 1.651)
0.014 – 0.026
(0.360 – 0.660)
0.100
(2.54)
BSC
0.125
3.175
MIN
J8 1298
OBSOLETE PACKAGE
9
LT1220
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PACKAGE DESCRIPTIO
N8 Package
8-Lead PDIP (Narrow .300 Inch)
(Reference 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)
0.130 ± 0.005
(3.302 ± 0.127)
0.065
(1.651)
TYP
0.100
(2.54)
BSC
0.125
(3.175) 0.020
MIN
(0.508)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
N8 1098
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
10
LT1220
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PACKAGE DESCRIPTIO
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference 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)
SO8 1298
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
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.
11
LT1220
U
TYPICAL APPLICATIONS N
DAC Current-to-Voltage Converter
Cable Driver
+
VIN
75Ω
DAC
INPUTS
75Ω CABLE
LT1220
VOUT
–
75Ω
12
5pF
5k
–
565A TYPE
LT1220
V
VOS + IOS (5kΩ) + OUT < 1/2LSB
AVOL
1k
VOUT
+
LT1220 • TA04
1k
LT1220 • TA03
1MHz, 4th Order Butterworth Filter
909Ω
1.1k
47pF
22pF
909Ω
2.67k
–
VIN
1.1k
2.21k
LT1220
220pF
+
–
LT1220
470pF
VOUT
+
LT1220 • TA05
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1221
150MHz, 250V/µs Amplifier
AV ≥ 4 Version of the LT1220
LT1222
500MHz, 200V/µs Amplifier
AV ≥ 10 Version of the LT1220
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
1220fb LT/CP 0801 1.5K REV B • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 1991