LT1222_15 Datasheet, PDF (1/12 Pages) Linear Technology – Operational Amplifier

FEATURES
■ _{Gain-Bandwidth: 500MHz}
■ _{Gain of 10 Stable Uncompensated}
■ _{Slew Rate: 200V/μs}
■ _{Input Noise Voltage: 3nV/√Hz}
■ _C-Load^TM _{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}
U
APPLICATIO S
■ _{Wideband Amplifiers}
■ _Buffers
■ _{Active Filters}
■ _{Video and RF Amplification}
■ _{Cable Drivers}
■ _{8-, 10-, 12-Bit Data Acquisition Systems}
TYPICAL APPLICATIO
A_V = 10 with Output Clamping
15V
3k
1N5711
V_IN
3₊
5
6
LT1222
2_–
909Ω
100Ω
1N5711 1N4148
0.1μF
⎥ V_OUT⎥ ≤ 0.5V
LT1222 • TA01
LT1222
500MHz, 3nV/√Hz, A_V ≥ 10
Operational Amplifier
DESCRIPTIO
The LT^®1222 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 compensa-
tion, 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 compen-
sation node can also be used to clamp the output swing.
The LT1222 is a member of a family of fast, high perfor-
mance amplifiers that employ Linear Technology
Corporation’s advanced complementary bipolar process-
ing. For unity-gain stable applications the LT1220 can be
used, and for gains of 4 or greater the LT1221 can be used.
LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Corporation.
A_V = – 1, C_C = 30pF Pulse Response
R_F = R_G = 1k
V_S = ±15V
V_IN = 100mV
f = 5MHz
LT1222 • TA02
1222fc
1