LT1221(Rev_A) 查看數據表（PDF） - Linear Technology
零件编号
产品描述 (功能)
生产厂家
LT1221 Datasheet PDF : 8 Pages
| |||
LT1221
TYPICAL PERFORMANCE CHARACTERISTICS
Small Signal, AV = 4
Large Signal, AV = 4
Large Signal, AV = 4,
CL = 10,000pF
VS = ±15V f = 5MHz
VIN = 25mV
LT1221 • TPC19
Small Signal, AV = – 4
VS = ±15V
VIN = 5VP-P
f = 2MHz
LT1221 • TPC20
Large Signal, AV = – 4
VS = ±15V
VIN = 5VP-P
f = 20kHz
Small Signal, AV = – 4,
CL = 1,000pF
LT1221 • TPC21
VS = ±15V f = 5MHz
VIN = 25mV
LT1221 • TPC22
VS = ±15V
VIN = 5VP-P
f = 2MHz
LT1221 • TPC23
VS = ±15V
VIN = 42mV
f = 500kHz
LT1221 • TPC24
APPLICATIONS INFORMATION
The LT1221 is stable in noise gains of 4 or greater and may
be inserted directly into HA2520/2/5, HA2541/2/4, AD817,
AD847, EL2020, EL2044 and LM6361 applications, pro-
vided that the nulling circuitry is removed and the ampli-
fier configuration has a high enough noise gain. The
suggested nulling circuit for the LT1221 is shown in the
following figure.
Offset Nulling
V+
5k
1
3+ 8
LT1221 7 6
2–
4
V–
0.1µF
0.1µF
LT1221 • AI01
Layout and Passive Components
The LT1221 amplifier is easy to apply and tolerant of less
than ideal layouts. For maximum performance (for ex-
ample, 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 re-
quired, although low profile sockets can provide reason-
able 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.
Input Considerations
Bias current cancellation circuitry is employed on the
inputs of the LT1221 so the input bias current and input
6
Share Link: 