LT1223
100MHz Current
Feedback Amplifier
FEATURES
■
■
■
■
■
■
■
■
■
■
DESCRIPTIO
100MHz Bandwidth at A
V
= 1
1000V/µs Slew Rate
Wide Supply Range:
±5V
to
±15V
1mV Input Offset Voltage
1µA Input Bias Current
5MΩ Input Resistance
75ns Settling Time to 0.1%
50mA Output Current
6mA Quiescent Current
Available in 8-Lead Plastic DIP and SO Packages
The LT
®
1223 is a 100MHz current feedback amplifier with
very good DC characteristics. The LT1223’s high slew
rate, 1000V/µs, wide supply range,
±15V,
and large output
drive,
±50mA,
make it ideal for driving analog signals over
double-terminated cables. The current feedback amplifier
has high gain bandwidth at high gains, unlike conventional
op amps.
The LT1223 comes in the industry standard pinout and
can upgrade the performance of many older products.
The LT1223 is manufactured on Linear Technology’s
proprietary complementary bipolar process.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
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■
■
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■
Video Amplifiers
Buffers
IF and RF Amplification
Cable Drivers
8-, 10-, 12-Bit Data Acquisition Systems
TYPICAL APPLICATIO
Video Cable Driver
60
Voltage Gain vs Frequency
50
40
VOLTAGE GAIN (dB)
V
IN
+
LT1223
75
Ω
R
G
= 10
R
G
= 33
R
G
= 110
R
G
= 470
R
G
=
∞
–
R
F
1k
75
Ω
CABLE
30
20
10
0
V
OUT
R
G
1k
75Ω
–10
–20
100k
1M
10M
FREQUENCY (Hz)
LT1223 • TPC01
R
A
V
= 1 +
F
R
G
AT AMPLIFIER OUTPUT
6dB LESS AT V
OUT
LT1223 • TA02
U
100MHz GAIN
BANDWIDTH
+
–
1k
R
G
U
U
100M
1G
1223fb
1
LT1223
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
NULL
1
–IN
2
+IN
3
V
–
4
N8 PACKAGE
8-LEAD PLASTIC DIP
Supply Voltage ......................................................
±18V
Differential Input Voltage .........................................
±5V
Input Voltage ............................ Equal to Supply Voltage
Output Short Circuit Duration (Note 2) ......... Continuous
Operating Temperature Range
LT1223M
(OBSOLETE) ..............
–55°C to 125°C
LT1223C ................................................ 0°C to 70°C
Storage Temperature Range ..................–65°C to 150°C
Junction Temperature Plastic Package ........... 150°C
Junction Temperature Ceramic Package
(OBSOLETE) .....................................
175°C
Lead Temperature (Soldering, 10 sec.)................. 300°C
8
7
6
5
SHUTDOWN
V
+
OUT
NULL
ORDER PART
NUMBER
LT1223CN8
LT1223CS8
S8 PART MARKING
1223
LT1223CJ8
LT1223MJ8
S8 PACKAGE
8-LEAD PLASTIC SO
T
J MAX
= 150°C,
θ
JA
= 100°C/W(N8)
T
J MAX
= 150°C,
θ
JA
= 150°C/W(S8)
J8 PACKAGE
8-LEAD CERAMIC DIP
T
JMAX
= 175°C,
θ
JA
= 100°CW (J8)
OBSOLETE PACKAGE
Consider the N8 or S8 for Alternative Source
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
SYMBOL
V
OS
I
IN
+
I
IN
–
e
n
i
n
R
IN
C
IN
CMRR
PSRR
PARAMETER
Input Offset Voltage
Noninverting Input Current
Inverting Input Current
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
Input Capacitance
Input Voltage Range
Common Mode Rejection Ratio
Inverting Input Current Common Mode Rejection
Power Supply Rejection Ratio
Noninverting Input Current Power Supply Rejection
Inverting Input Current Power Supply Rejection
A
V
R
OL
V
OUT
I
OUT
SR
BW
Large Signal Voltage Gain
Transresistance,
∆V
OUT
/∆I
IN
–
Maximum Output Voltage Swing
Maximum Output Current
Slew Rate
Bandwidth
V
S
=
±
15V, T
A
= 25°C, unless otherwise noted.
CONDITIONS
V
CM
= 0V
V
CM
= 0V
V
CM
= 0V
f = 1kHz, R
F
= 1k, R
G
= 10Ω
f = 1kHz, R
F
= 1k, R
G
= 10Ω
V
IN
=
±10V
1
±10
V
CM
=
±10V
V
CM
=
±10V
V
S
=
±4.5V
to
±18V
V
S
=
±4.5V
to
±18V
V
S
=
±4.5V
to
±18V
R
LOAD
= 400Ω, V
OUT
=
±10V
R
LOAD
= 400Ω, V
OUT
=
±10V
R
LOAD
= 200Ω
R
LOAD
= 200Ω
R
F
= 1.5k, R
G
= 1.5k (Note 3)
R
F
= 1k, R
G
= 1k, V
OUT
= 100mV
70
1.5
±10
50
800
68
56
MIN
LT1223M/C
TYP
±1
±1
±1
3.3
2.2
10
1.5
±12
63
30
80
12
60
89
5
±12
60
1300
100
100
500
100
MAX
±3
±3
±3
UNITS
mV
µA
µA
nV/√Hz
pA/√Hz
MΩ
pF
V
dB
nA/V
dB
nA/V
nA/V
dB
MΩ
V
mA
V/µs
MHz
1223fb
2
U
W
U
U
W W
W
LT1223
ELECTRICAL CHARACTERISTICS
SYMBOL
t
r
t
PD
t
s
PARAMETER
Rise Time
Propagation Delay
Overshoot
Settling Time, 0.1%
Differential Gain
Differential Phase
R
OUT
I
S
Open-Loop Output Resistance
Supply Current
Supply Current, Shutdown
V
S
=
±
15V, T
A
= 25°C, unless otherwise noted.
CONDITIONS
R
F
= 1.5k, R
G
= 1.5k, V
OUT
= 1V
R
F
= 1.5k, R
G
= 1.5k, V
OUT
= 1V
R
F
= 1.5k, R
G
= 1.5k, V
OUT
= 1V
R
F
= 1k, R
G
= 1k, V
OUT
= 10V
R
F
= 1k, R
G
= 1k, R
L
= 150Ω
R
F
= 1k, R
G
= 1k, R
L
= 150Ω
V
OUT
= 0, I
OUT
= 0
V
IN
= 0V
Pin 8 Current = 200µA
MIN
LT1223M/C
TYP
6.0
6.0
5
75
0.02
0.12
35
6
2
10
4
MAX
UNITS
ns
ns
%
ns
%
Deg
Ω
mA
mA
The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at V
S
=
±
15V,
V
CM
= 0V, 0°C
≤
T
A
≤
70°C, unless otherwise noted.
SYMBOL
V
OS
I
IN
+
I
IN
–
R
IN
CMRR
PSRR
PARAMETER
Input Offset Voltage
Noninverting Input Current
Inverting Input Current
Input Resistance
Input Voltage Range
Common Mode Rejection Ratio
Inverting Input Current Common Mode Rejection
Power Supply Rejection Ratio
Noninverting Input Current Power Supply Rejection
Inverting Input Current Power Supply Rejection
A
V
R
OL
V
OUT
I
OUT
I
S
Large-Signal Voltage Gain
Transresistance,
∆V
OUT
/∆I
IN
–
Maximum Output Voltage Swing
Maximum Output Current
Supply Current
Supply Current, Shutdown
V
CM
=
±10V
V
CM
=
±10V
V
S
=
±4.5V
to
±18V
V
S
=
±4.5V
to
±18V
V
S
=
±4.5V
to
±18V
R
LOAD
= 400Ω, V
OUT
=
±10V
R
LOAD
= 400Ω, V
OUT
=
±10V
R
LOAD
= 200Ω
R
LOAD
= 200Ω
V
IN
= 0V
Pin 8 Current = 200µA
CONDITIONS
V
CM
= 0V
V
CM
= 0V
V
CM
= 0V
V
IN
=
±10V
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
MIN
LT1223C
TYP
±1
±1
±1
MAX
±3
±3
±3
UNITS
mV
µA
µA
MΩ
V
dB
1
±10
56
68
10
±12
63
30
80
12
60
100
500
100
nA/V
dB
nA/V
nA/ V
dB
MΩ
V
mA
70
1.5
±10
50
89
5
±12
60
6
2
10
4
mA
mA
1223fb
3
LT1223
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at V
S
=
±
15V, V
CM
= 0V, – 55°C
≤
T
A
≤
125°C, unless otherwise noted.
SYMBOL
V
OS
I
IN+
I
IN–
R
IN
CMRR
PSRR
PARAMETER
Input Offset Voltage
Noninverting Input Current
Inverting Input Current
Input Resistance
Input Voltage Range
Common Mode Rejection Ratio
Inverting Input Current Common Mode Rejection
Power Supply Rejection Ratio
Noninverting Input Current Power Supply Rejection
Inverting Input Current Power Supply Rejection
A
V
R
OL
V
OUT
I
OUT
I
S
Large-Signal Voltage Gain
Transresistance,
∆V
OUT
/∆I
IN
–
Maximum Output Voltage Swing
Maximum Output Current
Supply Current
Supply Current, Shutdown
V
CM
=
±10V
V
CM
=
±10V
V
S
=
±4.5V
to
±15V
V
S
=
±4.5V
to
±15V
V
S
=
±4.5V
to
±15V
R
LOAD
= 400Ω, V
OUT
=
±10V
R
LOAD
= 400Ω, V
OUT
=
±10V
R
LOAD
= 200Ω
R
LOAD
= 200Ω
V
IN
= 0V
Pin 8 Current = 200µA
CONDITIONS
V
CM
= 0V
V
CM
= 0V
V
CM
= 0V
V
IN
=
±10V
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
ELECTRICAL CHARACTERISTICS
MIN
LT1223M
TYP
±1
±1
±1
MAX
±5
±5
±10
UNITS
mV
µA
µA
MΩ
V
dB
1
±10
56
68
10
±12
63
30
80
12
60
200
500
100
nA/V
dB
nA/V
nA/V
dB
MΩ
V
mA
70
1.5
±7
35
89
5
±12
60
6
2
10
4
mA
mA
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.
Note 3:
Noninverting operation, V
OUT
=
±10V,
measured at
±5V.
1223fb
4
LT1223
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage,
V
IN
= 0 (Operating)
10
125°C
8
4
OUTPUT SHORT CIRCUIT CURRENT (mA)
SUPPLY CURRENT (mA)
25°C
6
–55°C
4
SUPPLY CURRENT (mA)
2
0
0
2
4
6
8
10 12 14 16 18 20
LT1223 • TPC02
SUPPLY VOLTAGE (±V)
Input Common Mode Limit vs
Temperature
V+
–1
5
4
V
S
= 15V
V
S
= 5V
3
2
1
COMMON MODE RANGE (V)
–2
–3
–4
4
3
2
1
–
V
–50
V
S
=
±15V
–I
B
(µA)
I
B
(µA)
V
S
=
±5V
–25
0
25
50
75
TEMPERATURE (°C)
LT1223 • TPC05
V
OS
vs Common Mode Voltage
20
15
V
S
=
±
15V
20
15
OUTPUT VOLTAGE SWING (V)
OUTPUT VOLTAGE SWING (V)
10
5
V
OS
(mV)
125°C
0
–5
–10
–15
–20
–15
–10
–5
0
5
10
15
–55°C
25°C
COMMON MODE VOLTAGE (V)
LT1223 • TPC08
U W
100
125
Supply Current vs Supply Voltage
(Shutdown)
PIN 8 = 0V
100
90
80
70
60
50
40
30
20
10
Output Short Circuit-Current vs
Temperature
3
125°C
2
25°C
–55°C
1
0
0
2
4
6
8
10 12 14 16 18 20
LT1223 • TPC03
0
–50
–25
0
25
50
75
100
125
SUPPLY VOLTAGE (±V)
CASE TEMPERATURE (°C)
LT1223 • TPC04
+I
B
vs Common Mode Voltage
V
S
=
±15V
10
8
6
–55°C
25°C
4
2
–I
B
vs Common Mode Voltage
V
S
=
±
15V
125°C
0
–1
–2
–3
–4
–5
–15
–10
–5
–55°C
0
25°C
125°C
–2
–4
–6
–8
0
5
10
15
–10
–15
–10
–5
0
5
10
15
COMMON MODE VOLTAGE (V)
LT1223 • TPC06
COMMON MODE VOLTAGE (V)
LT1223
∑
TPC07
Output Voltage Swing vs
Load Resistor
V
S
=
±15V
125°C
25°C, –55°C
20
15
Output Voltage Swing vs
Supply Voltage
10
5
0
–5
–10
–15
–20
100
125°C
10
5
0
–5
–10
–15
–20
25°C
125°C
–55°C
25°C
–55°C
25°C, –55°C
125°C
1000
LOAD RESISTOR (
Ω
)
LT1223 • TPC09
10000
0
2
4
6
8
10 12 14 16 18 20
LT1223 • TPC10
SUPPLY VOLTAGE (±V)
1223fb
5
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