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LT1225CN8#PBF

P1-P3P4-P6P7-P8
1
LT1225
Very High Speed
Operational Amplifier
■
Gain of 5 Stable
■
150MHz Gain Bandwidth
■
400V/µs Slew Rate
■
20V/mV DC Gain, R
L
= 500Ω
■
1mV Maximum Input Offset Voltage
■
±12V Minimum Output Swing into 500Ω
■
Wide Supply Range: ±2.5V to ±15V
■
7mA Supply Current
■
90ns Settling Time to 0.1%, 10V Step
■
Drives All Capacitive Loads
D
U
ESCRIPTIO
S
F
EA
T
U
RE
The LT1225 is a very high speed operational amplifier with
excellent DC performance. The LT1225 features reduced
input offset voltage and higher DC gain than devices with
comparable bandwidth and slew rate. The circuit is a
single gain stage with outstanding settling characteristics.
The fast settling time makes the circuit an ideal choice for
data acquisition systems. The output is capable of driving
a 500Ω load to ±12V with ±15V supplies and a 150Ω load
to ± 3V on ±5V supplies. The circuit is also capable of
driving large capacitive loads which makes it useful in
buffer or cable driver applications.
The LT1225 is a member of a family of fast, high per-
formance amplifiers that employ Linear Technology
Corporation’s advanced bipolar complementary
processing.
U
S
A
O
PP
L
IC
AT
I
■
Wideband Amplifiers
■
Buffers
■
Active Filters
■
Video and RF Amplification
■
Cable Drivers
■
Data Acquisition Systems
U
A
O
PP
L
IC
AT
ITY
P
I
CA
L
20MHz,A
V
= 50 Instrumentation Amplifier
Gain of 5 Pulse Response
–
+
–
–
+
+
LT1225
LT1225
LT1225
1k
V
IN
1k
V
OUT
200pF
250Ω
250Ω
1k
1k
10k
10k
+
–
LT1225 TA01
LT1225 TA02
LT1225
2
Total Supply Voltage (V
+
to V
–
) .............................. 36V
Differential Input Voltage ......................................... ±6V
Input Voltage ............................................................±V
S
Output Short Circuit Duration (Note 1) ............ Indefinite
Operating Temperature Range
LT1225C................................................ 0°C to 70°C
Maximum Junction Temperature
Plastic Package ..............................................150°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................. 300°C
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
WU
U
PACKAGE
/
O
RDER I FOR ATIO
ORDER PART
NUMBER
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage (Note 2) 0.5 1.0 mV
I
OS
Input Offset Current 100 400 nA
I
B
Input Bias Current 48 µA
e
n
Input Noise Voltage f = 10kHz 7.5 nV/√Hz
i
n
Input Noise Current f = 10kHz 1.5 pA/√Hz
R
IN
Input Resistance V
CM
= ±12V 24 40 MΩ
Differential 70 kΩ
C
IN
Input Capacitance 2pF
Input Voltage Range + 12 14 V
Input Voltage Range – –13 –12 V
CMRR Common-Mode Rejection Ratio V
CM
= ±12V 94 115 dB
PSRR Power Supply Rejection Ratio V
S
= ±5V to ±15V 86 95 dB
A
VOL
Large Signal Voltage Gain V
OUT
= ±10V, R
L
= 500Ω 12.5 20 V/mV
V
OUT
Output Swing R
L
= 500Ω±12.0 ±13.3 V
I
OUT
Output Current V
OUT
= ±12V 24 40 mA
SR Slew Rate (Note 3) 250 400 V/µs
Full Power Bandwidth 10V Peak, (Note 4) 6.4 MHz
GBW Gain Bandwidth f = 1MHz 150 MHz
t
r
, t
f
Rise Time, Fall Time A
VCL
= 5, 10% to 90%, 0.1V 7 ns
Overshoot A
VCL
= 5, 0.1V 20 %
Propagation Delay 50% V
IN
to 50% V
OUT
7ns
t
s
Settling Time 10V Step, 0.1%, A
V
= –5 90 ns
Differential Gain f = 3.58MHz, A
V
= 5, R
L
= 150Ω 1.0 %
Differential Phase f = 3.58MHz, A
V
= 5, R
L
= 150Ω 1.7 Deg
R
O
Output Resistance A
VCL
= 5, f = 1MHz 4.5 Ω
I
S
Supply Current 79 mA
E
LECTR
IC
AL C CHARA TERIST
ICS
V
S
= ±15V, T
A
= 25°C, V
CM
= 0V unless otherwise noted.
S8 PART MARKING
1225
LT1225CN8
LT1225CS8
1
2
3
4
5
6
7
8
TOP VIEW
NULL
V
+
NULL
–IN
OUT
NC
+IN
V
–
S8 PACKAGE
8-LEAD PLASTIC SOIC
N8 PACKAGE
8-LEAD PLASTIC DIP
LT1225 PO01
T
J MAX
= 15O°C, θ
JA
= 130°C/W (N8)
T
J MAX
= 15O°C, θ
JA
= 220°C/W (S8)
3
LT1225
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage V
S
= ±15V, (Note 2) 0.5 1.5 mV
V
S
= ±5V, (Note 2) 1.0 2.5 mV
Input V
OS
Drift 10 µV/°C
I
OS
Input Offset Current V
S
= ±15V and V
S
= ±5V 100 600 nA
I
B
Input Bias Current V
S
= ±15V and V
S
= ±5V 4 9 µA
CMRR Common-Mode Rejection Ratio V
S
= ±15V, V
CM
= ±12V and V
S
= ±5V, V
CM
= ±2.5V 93 115 dB
PSRR Power Supply Rejection Ratio V
S
= ±5V to ±15V 85 95 dB
A
VOL
Large Signal Voltage Gain V
S
= ±15V, V
OUT
= ±10V, R
L
= 500Ω 10 12.5 V/mV
V
S
= ±5V, V
OUT
= ±2.5V, R
L
= 500Ω 8 10 V/mV
V
OUT
Output Swing V
S
= ±15V, R
L
= 500Ω±12.0 ±13.3 V
V
S
= ±5V, R
L
= 500Ω or 150Ω ±3.0 ±3.3 V
I
OUT
Output Current V
S
= ±15V, V
OUT
= ±12V 24 40 mA
V
S
= ±5V, V
OUT
= ±3V 20 40 mA
SR Slew Rate V
S
= ±15V, (Note 3) 250 400 V/µs
I
S
Supply Current V
S
= ±15V and V
S
= ±5V 7 10.5 mA
V
S
= ±5V, T
A
= 25°C, V
CM
= 0V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage (Note 2) 1.0 2.0 mV
I
OS
Input Offset Current 100 400 nA
I
B
Input Bias Current 48 µA
Input Voltage Range + 2.5 4 V
Input Voltage Range – –3 –2.5 V
CMRR Common-Mode Rejection Ratio V
CM
= ±2.5V 94 115 dB
A
VOL
Large-Signal Voltage Gain V
OUT
= ±2.5V, R
L
= 500Ω 10 15 V/mV
V
OUT
= ±2.5V, R
L
= 150Ω 13 V/mV
V
OUT
Output Voltage R
L
= 500Ω±3.0 ±3.7 V
R
L
= 150Ω±3.0 ±3.3 V
I
OUT
Output Current V
OUT
= ±3V 20 40 mA
SR Slew Rate (Note 3) 250 V/µs
Full Power Bandwidth 3V Peak, (Note 4) 13.3 MHz
GBW Gain Bandwidth f = 1MHz 100 MHz
t
r
, t
f
Rise Time, Fall Time A
VCL
= 5, 10% to 90%, 0.1V 9 ns
Overshoot A
VCL
= 5, 0.1V 10 %
Propagation Delay 50% V
IN
to 50% V
OUT
9ns
t
s
Settling Time – 2.5V to 2.5V, 0.1%, A
V
= –4 70 ns
I
S
Supply Current 79 mA
E
LECTR
IC
AL C CHARA TERIST
ICS
E
LECTR
IC
AL C CHARA TERIST
ICS
Note 3: Slew rate is measured between ±10V on an output swing of ±12V
on ±15V supplies, and ±2V on an output swing of ±3.5V on ±5V supplies.
Note 4: Full power bandwidth is calculated from the slew rate
measurement: FPBW = SR/2πVp.
Note 1: A heat sink may be required to keep the junction temperature
below absolute maximum when the output is shorted indefinitely.
Note 2: Input offset voltage is tested with automated test equipment
in <1 second.
0°C ≤ T
A
≤ 70°C, V
CM
= 0V unless otherwise noted.
P1-P3P4-P6P7-P8

LT1225CN8#PBF

Mfr. #:
Buy LT1225CN8#PBF
Manufacturer:
Analog Devices Inc.
Description:
High Speed Operational Amplifiers Very Hi Speed Op Amp
Lifecycle:
New from this manufacturer.
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