LINER LT1222MJ8

LT1222
500MHz, 3nV/√Hz, AV ≥ 10
Operational Amplifier
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DESCRIPTIO
FEATURES
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Gain-Bandwidth: 500MHz
Gain of 10 Stable Uncompensated
Slew Rate: 200V/µs
Input Noise Voltage: 3nV/√Hz
C-LoadTM Op Amp Drives Capacitive Loads
External Compensation Pin
Maximum Input Offset Voltage: 300µV
Maximum Input Bias Current: 300nA
Maximum Input Offset Current: 300nA
Minimum Output Swing Into 500Ω: ±12V
Minimum DC Gain: 100V/mV, RL = 500Ω
Settling Time to 0.1%: 75ns, 10V Step
Settling Time to 0.01%: 120ns, 10V Step
Differential Gain: 0.4%, AV = 2, RL = 150Ω
Differential Phase: 0.1°, AV = 2, RL = 150Ω
The LT1222 is a low noise, very high speed operational
amplifier with superior DC performance. The LT1222 is
stable in a noise gain of 10 or greater without compensation, or the part can be externally compensated for lower
closed-loop gain at the expense of lower bandwidth and
slew rate. It features reduced input offset voltage, lower
input bias currents, lower noise 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 capacitive loads which makes it
useful in buffer or cable driver applications. The compensation node can also be used to clamp the output swing.
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APPLICATI
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Wideband Amplifiers
Buffers
Active Filters
Video and RF Amplification
Cable Drivers
8-, 10-, 12-Bit Data Acquisition Systems
and LTC are registered trademarks and LT is a trademark of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Cortporation.
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The LT1222 is a member of a family of fast, high performance amplifiers that employ Linear Technology
Corporation’s advanced complementary bipolar processing. For unity-gain stable applications the LT1220 can be
used, and for gains of 4 or greater the LT1221 can be used.
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TYPICAL APPLICATION
AV = 10 with Output Clamping
AV = – 1, CC = 30pF Pulse Response
15V
3k
1N5711
VIN
3
+
1N4148
0.1µF
5
LT1222
2
1N5711
6
 VOUT ≤ 0.5V
–
909Ω
100Ω
LT1222 • TA01
RF = RG = 1k
VS = ±15V
VIN = 100mV
f = 5MHz
LT1222 • TA02
1
LT1222
W W
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AXI U
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ABSOLUTE
RATI GS
Total Supply Voltage (V + to V –) ............................. 36V
Differential Input Voltage ........................................ ±6V
Input Voltage .......................................................... ±VS
Output Short-Circuit Duration (Note 1) ........... Indefinite
Specified Temperature Range
LT1222C (Note 2) ................................... 0°C to 70°C
LT1222M ......................................... – 55°C to 125°C
Operating Temperature Range
LT1222C ........................................... – 40°C TO 85°C
LT1222M ......................................... – 55°C to 125°C
Maximum Junction Temperature (See Below)
Plastic Package ............................................... 150°C
Ceramic Package ............................................. 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
ORDER PART
NUMBER
TOP VIEW
NULL
8
NULL 1
6 VOUT
–IN 2
+IN 3
7 V+
5 NC
4
SPECIAL
ORDER
CONSULT
FACTORY
ORDER PART
NUMBER
TOP VIEW
NULL 1
8
NULL
–IN 2
7
V+
+IN 3
6
VOUT
V– 4
5
NC
J8 PACKAGE
8-LEAD CERAMIC DIP
–
V
H PACKAGE
8-LEAD TO-5 METAL CAN
N8 PACKAGE
8-LEAD PLASTIC DIP
S8 PACKAGE
8-LEAD PLASTIC SOIC
LT1222CN8
LT1222MJ8
LT1222CS8
S8 PART MARKING
1222
TJMAX = 175°C, θJA = 100°C/W (J)
TJMAX = 150°C, θJA = 130°C/W (N)
TJMAX = 150°C, θJA = 190°C/W (S)
TJMAX = 175°C, θJA = 150°C/W
Consult factory for Industrial grade parts.
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
Inut 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
VS = ±15V, TA = 25°C, VCM = 0V, unless otherwise specified.
CONDITIONS
(Note 3)
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 4)
10V Peak (Note 5)
f = 1MHz
100
98
100
12
24
150
TYP
100
100
100
3
2
45
12
2
14
– 13
120
110
200
13
26
200
3.2
500
MAX
300
300
300
– 12
UNITS
µV
nA
nA
nV/√Hz
pA/√Hz
MΩ
kΩ
pF
V
V
dB
dB
V/mV
±V
mA
V/µs
MHz
MHz
LT1222
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 = 10, 10% to 90%, 0.1V
AV = 10, 0.1V
AV = 10, 50% VIN to 50% VOUT, 0.1V
10V Step, 0.1%
10V Step, 0.01%
AV = 2, CC = 50pF, f = 3.58MHz, RL = 150Ω (Note 6)
AV = 10, CC = 0pF, f = 3.58MHz, RL = 1k (Note 6)
AV = 2, CC = 50pF, f = 3.58MHz, RL = 150Ω (Note 6)
AV = 10, CC = 0pF, f = 3.58MHz, RL = 1k (Note 6)
AV = 10, f = 1MHz
MIN
TYP
2.4
45
5.2
75
120
0.40
0.15
0.10
0.01
0.1
8
MAX
TYP
100
5
100
100
120
110
200
13
26
200
8
MAX
600
TYP
100
5
100
100
120
110
200
13
13
26
13
200
8
MAX
600
10.5
UNITS
ns
%
ns
ns
ns
%
%
DEG
DEG
Ω
mA
VS = ±15V, 0°C ≤ TA ≤ 70°C, 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 3)
MIN
●
●
●
VCM = ±12V
VS = ±5V to ±15V
VOUT = ±10V, RL = 500Ω
RL = 500Ω
VOUT = ±12V
(Note 4)
●
●
●
●
●
●
100
98
100
12
24
150
●
400
400
11
UNITS
µV
µV/°C
nA
nA
dB
dB
V/mV
±V
mA
V/µs
mA
VS = ±15V, – 55°C ≤ TA ≤ 125°C, 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 3)
MIN
●
●
●
VCM = ±12V
VS = ±5V to ±15V
VOUT = ±10V, RL = 500Ω
RL = 500Ω
RL = 1k
VOUT = ±10V
VOUT = ±12V
(Note 4)
The ● denotes specifications which apply over the full temperature range.
Note 1: A heat sink may be required when the output is shorted indefinitely.
Note 2: 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.
●
●
●
●
●
●
●
●
●
98
98
50
10
12
20
12
110
800
1000
11
UNITS
µV
µV/°C
nA
nA
dB
dB
V/mV
±V
±V
mA
mA
V/µs
mA
Note 3: Input offset voltage is pulse tested and is exclusive of warm-up drift.
Note 4: Slew rate is measured between ±10V on an output swing of ±12V.
Note 5: FPBW = SR/2πVP.
Note 6: Differential Gain and Phase are tested with five amps in series.
Attenuators of 1/Gain are used as loads.
3
LT1222
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TYPICAL PERFORMANCE CHARACTERISTICS
Input Common-Mode Range
vs Supply Voltage
Supply Current vs Supply Voltage
and Temperature
20
10
15
+VCM
10
–VCM
5
T = 125°C
9
T = 25°C
8
7
6
0
T = – 55°C
5
5
10
15
SUPPLY VOLTAGE (±V)
20
5
10
15
SUPPLY VOLTAGE (±V)
LT1222 • TPC01
10
± 5V SUPPLIES
100
1k
LOAD RESISTANCE (Ω)
120
TA = 25°C
110
200
IB+
100
IB–
0
–100
– 200
– 300
–500
–15
10k
VS = ±15V
100
VS = ±5V
90
80
70
0
5
–10
–5
10
INPUT COMMON-MODE VOLTAGE (V)
10
15
LT1222 • TPC06
100
INPUT VOLTAGE NOISE (nV/√Hz)
35
30
25
VS = ±15V
TA = 25°C
AV = 101
RS = 100k
100
10
in
10
1
en
1
100
125
LT1222 • TPC07
10
100
1k
10k
FREQUENCY (Hz)
0.1
100k
LT1222 • TPC08
120
INPUT CURRENT NOISE (pA/√Hz)
40
10k
Power Supply Rejection Ratio
vs Frequency
1000
VS = ±5V
45
100
1k
LOAD RESISTANCE (Ω)
LT1222 • TPC05
Input Noise Spectral Density
50
OUTPUT SHORT-CIRCUIT CURRENT (mA)
20
Open-Loop Gain
vs Resistive Load
300
Output Short-Circuit Current
vs Temperature
4
5
10
15
SUPPLY VOLTAGE (±V)
LT1222 • TPC03
VS = ±15V
TA = 25°C
LT1222 • TPC04
50
0
25
75
TEMPERATURE (°C)
5
–400
0
20
– 50 – 25
– VSW
0
OPEN-LOOP GAIN (dB)
INPUT BIAS CURRENT (nA)
OUTPUT VOLTAGE SWING (VP-P)
400
15
10
10
20
500
±15V SUPPLIES
5
+VSW
Input Bias Current
vs Input Common-Mode Voltage
TA = 25°C
∆VOS = 30mV
20
15
LT1222 • TPC02
Output Voltage Swing
vs Resistive Load
25
TA = 25°C
RL = 500Ω
∆VOS = 30mV
0
0
POWER SUPPLY REJECTION RATIO (dB)
0
30
MAGNITUDE OF OUTPUT VOLATGE (V)
11
TA = 25°C
∆VOS = 0.5mV
SUPPLY CURRENT (mA)
MAGNITUDE OF INPUT VOLTAGE (V)
20
Output Voltage Swing
vs Supply Voltage
VS = ±15V
TA = 25°C
100
+PSRR
80
–PSRR
60
40
20
0
100
1k
10k 100k
1M
FREQUENCY (Hz)
10M
100M
LT1222 • TPC09
LT1222
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TYPICAL PERFORMANCE CHARACTERISTICS
Common-Mode Rejection Ratio
vs Frequency
Output Swing and Error
vs Settling Time (Noninverting)
VS = ±15V
TA = 25°C
100
VS = ±15V
TA = 25°C
8
6
60
40
10mV
4
2
0
–2
–4
10mV
–6
20
0
10k
1M
100k
FREQUENCY (Hz)
10M
100M
1mV
75
100
50
SETTLING TIME (ns)
40
40
20
VOLTAGE MAGNITUDE (dB)
26
C = 50pF
22
20
C=0
18
16
0
14
– 20
100M
10
C = 500pF
525
SLEW RATE (V/µs)
250
475
450
425
225
VS = ±15V
AV = –10
CC = 0
(SR +) + (SR –)
SR =
2
200
175
150
125
LT1222 • TPC16
1M
10M
FREQUENCY (Hz)
125
– 50 – 25
0
25
50
75
TEMPERATURE (°C)
100M
Total Harmonic Distortion
vs Frequency
275
500
100k
LT1222 • TPC15
Slew Rate vs Temperature
VS = ±15V
GAIN-BANDWIDTH (MHz)
0.01
LT1222 • TPC14
550
100
0.1
0.001
10k
100
10
FREQUENCY (MHz)
LT1222 • TPC13
0
75
25
50
TEMPERATURE (°C)
1
C = 1000pF
1
Gain-Bandwidth vs Temperature
125
VS = ±15V
TA = 25°C
AV = 10
C = 100pF
24
12
10M
75
100
50
SETTLING TIME (ns)
10
TOTAL HARMONIC DISTORTION AND NOISE (%)
VOLTAGE GAIN (dB)
60
PHASE MARGIN (DEG)
60
20
25
Closed-Loop Output Impedance
vs Frequency
VS = ±15V
TA = 25°C
AV = –10
28
80
VS = ±5V
0
1mV
LT1222 • TPC12
30
100
VS = ±15V
10mV
LT1222 • TPC11
VS = ±15V
400
– 50 – 25
125
Frequency Response
vs Capacitive Load
120
TA = 25°C
0
100
10k
1M
100k
1k
FREQUENCY (Hz)
–4
–8
Voltage Gain and Phase
vs Frequency
VS = ±5V
–2
–10
LT1222 • TPC10
100
2
–8
25
1mV
0
–10
0
10mV
4
–6
OUTPUT IMPEDANCE (Ω)
1k
1mV
OUTPUT SWING (V)
80
VS = ±15V
TA = 25°C
8
6
OUTPUT SWING (V)
COMMON-MODE REJECTION RATIO (dB)
10
10
120
80
Output Swing and Error
vs Settling Time (Inverting)
100
125
LT1222 • TPC17
0.01
VS = ±15V
VO = 3VRMS
RL = 500Ω
0.001
AV = ±10
0.0001
10
100
1k
10k
FREQUENCY (Hz)
100k
LT1222 • TPC18
5
LT1222
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TYPICAL PERFORMANCE CHARACTERISTICS
Large Signal, AV = 10,
CL = 10,000pF
Large Signal, AV = 10
Small Signal, AV = 10
RF = 909Ω VS = ±15V f = 5MHz
RG = 100Ω VIN = 20mV
RF = 909Ω VS = ±15V
RG = 100Ω VIN = 2V
LT1222 • TPC19
f = 2MHz
LT1222 • TPC20
RF = 1k
VS = ±15V f = 2MHz
RG = 100Ω (75) VIN = 2V
LT1222 • TPC22
LT1222 • TPC21
LT1222 • TPC23
VS = ±15V f = 500kHz
RF = 1k
RG = 100Ω (75) VIN = 15mV
LT1222 • TPC24
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VS = ±15V f = 5MHz
RF = 1k
RG = 100Ω (75) VIN = 20mV
f = 20kHz
Small Signal, AV = – 10,
CL = 1,000pF
Large Signal, AV = – 10
Small Signal, AV = – 10
RF = 909Ω VS = ±15V
RG = 100Ω VIN = 2V
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APPLICATIONS INFORMATION
The LT1222 is stable in noise gains of 10 or greater and
may be inserted directly into HA2520/2/5, HA2541/2/4,
AD817, AD847, EL2020, EL2044 and LM6361 applications, provided that the nulling circuitry is removed and
the amplifier configuration has a high enough noise gain.
The suggested nulling circuit for the LT1222 is shown in
the following figure.
Offset Nulling
V+
5k
1
3
+
0.1µF
8
7
LT1222
2
–
6
4
0.1µF
V–
6
LT1222 • AI01
Layout and Passive Components
The LT1222 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 drive current applications use low ESR bypass
capacitors (1µF to 10µF tantalum). Sockets should be
avoided when maximum frequency performance is required. 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. Stray capacitance on pin 5 should
be minimized. Bias current cancellation circuitry is employed on the inputs of the LT1222 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.
LT1222
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APPLICATIONS INFORMATION
Output Clamping
Access to the internal compensation node at pin 5 allows
the output swing of the LT1222 to be clamped. An example
is shown on the first page of this data sheet. The compensation node is approximately one diode drop above the
output and can source or sink 1.2mA. Back-to-back Schottky diodes clamp pin 5 to a diode drop above ground so the
output is clamped to ±0.5V (the drop of the Schottkys at
1.2mA). The diode reference is bypassed for good AC
response. This circuit is useful for amplifying the voltage at
false sum nodes used in settling time measurements.
Capacitive Loading
The LT1222 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 LT1222 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.
Compensation
The LT1222 has a typical gain-bandwidth product of
500MHz which allows it to have wide bandwidth in high
gain configurations (i.e., in a gain of 100, it will have a
bandwidth of about 5MHz). For added flexibility the amplifier frequency response may be adjusted by adding capacitance from pin 5 to ground. The compensation capacitor
may be used to reduce overshoot, to allow the amplifier to
be used in lower noise gains, or simply to reduce bandwidth. Table 1 shows gain and compensation capacitor
vresus – 3dB bandwidth, maximum frequency peaking and
small-signal overshoot.
Table 1
AV
CC (pF)
f – 3dB (MHz)
Max Peaking (dB)
Overshoot (%)
–1
30
99
4.2
36
–1
50
70
0.9
13
–1
82
32
0
0
–1
150
13
0
0
5
10
140
3.8
35
5
20
100
0
5
5
30
34
0
1
5
50
15
0
0
10
0
150
9.5
45
10
5
111
0.2
10
10
10
40
0
2
10
20
17
0
0
20
0
82
0.1
10
20
5
24
0
0
20
10
14
0
0
For frequencies < 10MHz the frequency response of the
amplifier is approximately:
f = 1/[2π × 53Ω × (CC + 6pF) × (Noise Gain)]
The slew rate is affected as follows:
SR = 1.2mA/(CC + 6pF)
An example would be a gain of –10 (noise gain of 11) and
CC = 20pF which has 10.5MHz bandwidth and 46V/µs slew
rate. It should be noted that the LT1222 is not stable in
AV = 1 unless CC = 50pF and a 1k resistor is used as the
feedback resistor. The 1k and input capacitance increase
the noise gain at frequency to aid stability.
7
LT1222
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TYPICAL APPLICATIONS N
VOS Null Loop
Two Op Amp Instrumemtation Amplifier
R5
220Ω
150k
150k
1
+
VIN
R1
10k
8
VOUT
AV = 1001
LT1222
–
R2
1k
–
25k
LT1220
10k
100pF
10k
–
25Ω
R4
10k
+
R3
1k
–
VOUT
LT1222
+
VIN
+
–
100pF
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 = 3MHz
LT1222 • TA04
LT1097
LT1222 • TA03
+
W
W
SI PLIFIED SCHE ATIC
V+ 7
NULL
1
8
BIAS 2
BIAS 1
COMP 5
6 OUT
+IN 3
2 –IN
V– 4
LT1222 • SS
8
LT1222
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PACKAGE DESCRIPTION
Dimensions in inches (millimeters) unless otherwise noted.
H8 Package
8-Lead TO-5 Metal Can
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
0.027 – 0.034
(0.686 – 0.864)
0.165 – 0.185
(4.191 – 4.699)
GAUGE
PLANE
0.010 – 0.045
(0.254 – 1.143)
0.016 – 0.021
(0.406 – 0.533)
0.027 – 0.045
(0.686 – 1.143)
45°TYP
0.200 – 0.230
(5.080 – 5.842)
BSC
REFERENCE
PLANE
0.500 – 0.750
(12.700 – 19.050)
NOTE: LEAD DIAMETER IS UNCONTROLLED BETWEEN
THE REFERENCE PLANE AND SEATING PLANE.
0.110 – 0.160
(2.794 – 4.064)
INSULATING
STANDOFF
H8(5) 0592
J8 Package
8-Lead Ceramic Dip
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
3
4
0.200
(5.080)
MAX
0.300 BSC
(0.762 BSC)
0.015 – 0.060
(0.381 – 1.524)
0.008 – 0.018
(0.203 – 0.457)
0.385 ± 0.025
(9.779 ± 0.635)
0° – 15°
0.045 – 0.068
(1.143 – 1.727)
0.014 – 0.026
(0.360 – 0.660)
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS.
0.125
3.175
0.100 ± 0.010 MIN
(2.540 ± 0.254)
J8 0694
9
LT1222
U
PACKAGE DESCRIPTION
Dimensions in inches (millimeters) unless otherwise noted.
N8 Package
8-Lead Plastic Dip
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)
(
+0.025
0.325 –0.015
+0.635
8.255
–0.381
)
0.045 – 0.065
(1.143 – 1.651)
0.065
(1.651)
TYP
0.045 ± 0.015
(1.143 ± 0.381)
0.100 ± 0.010
(2.540 ± 0.254)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTURSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm).
10
0.130 ± 0.005
(3.302 ± 0.127)
0.125
(3.175)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.015
(0.380)
MIN
N8 0694
LT1222
U
PACKAGE DESCRIPTION
Dimensions in inches (millimeters) unless otherwise noted.
S8 Package
8-Lead Plastic SOIC
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)
2
3
4
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
0°– 8° TYP
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
0.050
(1.270)
BSC
SO8 0294
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
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
LT1222
U.S. Area Sales Offices
NORTHEAST REGION
Linear Technology Corporation
3220 Tillman Drive, Suite 120
Bensalem, PA 19020
Phone: (215) 638-9667
FAX: (215) 638-9764
Linear Technology Corporation
266 Lowell St., Suite B-8
Wilmington, MA 01887
Phone: (508) 658-3881
FAX: (508) 658-2701
SOUTHEAST REGION
Linear Technology Corporation
17060 Dallas Parkway
Suite 208
Dallas, TX 75248
Phone: (214) 733-3071
FAX: (214) 380-5138
SOUTHWEST REGION
Linear Technology Corporation
22141 Ventura Blvd.
Suite 206
Woodland Hills, CA 91364
Phone: (818) 703-0835
FAX: (818) 703-0517
CENTRAL REGION
Linear Technology Corporation
Chesapeake Square
229 Mitchell Court, Suite A-25
Addison, IL 60101
Phone: (708) 620-6910
FAX: (708) 620-6977
NORTHWEST REGION
Linear Technology Corporation
782 Sycamore Dr.
Milpitas, CA 95035
Phone: (408) 428-2050
FAX: (408) 432-6331
International Sales Offices
FRANCE
Linear Technology S.A.R.L.
Immeuble "Le Quartz"
58 Chemin de la Justice
92290 Chatenay Malabry
France
Phone: 33-1-41079555
FAX: 33-1-46314613
KOREA
Linear Technology Korea Branch
Namsong Building, #505
Itaewon-Dong 260-199
Yongsan-Ku, Seoul
Korea
Phone: 82-2-792-1617
FAX: 82-2-792-1619
TAIWAN
Linear Technology Corporation
Rm. 801, No. 46, Sec. 2
Chung Shan N. Rd.
Taipei, Taiwan, R.O.C.
Phone: 886-2-521-7575
FAX: 886-2-562-2285
GERMANY
Linear Techonolgy GmbH
Untere Hauptstr. 9
D-85386 Eching
Germany
Phone: 49-89-3197410
FAX: 49-89-3194821
SINGAPORE
Linear Technology Pte. Ltd.
507 Yishun Industrial Park A
Singapore 2776
Phone: 65-753-2692
FAX: 65-754-4113
UNITED KINGDOM
Linear Technology (UK) Ltd.
The Coliseum, Riverside Way
Camberley, Surrey GU15 3YL
United Kingdom
Phone: 44-276-677676
FAX: 44-276-64851
JAPAN
Linear Technology KK
5F YZ Bldg.
4-4-12 Iidabashi, Chiyoda-Ku
Tokyo, 102 Japan
Phone: 81-3-3237-7891
FAX: 81-3-3237-8010
World Headquarters
Linear Technology Corporation
1630 McCarthy Blvd.
Milpitas, CA 95035-7487
Phone: (408) 432-1900
FAX: (408) 434-0507
0794
12
Linear Technology Corporation
LT/GP 0894 5K REV A • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900 ● FAX: (408) 434-0507 ● TELEX: 499-3977
 LINEAR TECHNOLOGY CORPORATION 1992