EL5120T 데이터 시트보기 (PDF) - Intersil
부품명
상세내역
제조사
EL5120T Datasheet PDF : 14 Pages
| |||
EL5120T
Applications Information
Product Description
The EL5120T is a high voltage rail-to-rail input-output amplifier
with low power consumption. The EL5120T is a single amplifier
which exhibits beyond the rail input capability, rail-to-rail output
capability, and is unity gain stable.
The EL5120T features a slew rate of 12V/µs. Also, the device
provides common mode input capability beyond the supply rails,
rail-to-rail output capability, and a bandwidth of 12MHz (-3dB).
This enables the amplifier to offer maximum dynamic range at
any supply voltage.
Operating Voltage, Input and Output
Capability
The EL5120T can operate on a single supply or dual supply
configuration. The EL5120T operating voltage ranges from a
minimum of 4.5V to a maximum of 19V. This range allows for a
standard 5V (or ±2.5V) supply voltage to dip to -10%, or a standard
18V (or ±9V) to rise by +5.5% without affecting performance or
reliability.
The input common-mode voltage range of the EL5120T extends
500mV beyond the supply rails. Also, the EL5120T is immune to
phase reversal. However, if the common mode input voltage
exceeds the supply voltage by more than 0.5V, electrostatic
protection diodes in the input stage of the device begin to conduct.
Even though phase reversal will not occur, to maintain optimal
reliability it is suggested to avoid input overvoltage conditions.
Figure 28 shows the input voltage driven 500mV beyond the
supply rails and the device output swinging between the supply
rails.
The EL5120T output typically swings to within 50mV of positive
and negative supply rails with load currents of ±5mA. Decreasing
load currents will extend the output voltage range even closer to
the supply rails. Figure 29 shows the input and output waveforms
for the device in a unity-gain configuration. Operation is from ±5V
supply with a 10kΩ load connected to GND. The input is a 10VP-P
sinusoid and the output voltage is approximately 9.9VP-P.
Refer to the “Electrical Specifications” table beginning on page 3
for specific device parameters. Parameter variations with
operating voltage, loading and/or temperature are shown in the
“Typical Performance Curves” beginning on page 6.
VS = ±2.5V, TA = +25°C, AV = 1, VIN = 6VP-P, RL = 10kΩ TO GND
OUTPUT
INPUT
100µs/DIV
FIGURE 28. OPERATION WITH BEYOND-THE-RAILS INPUT
VS = ±5V, TA = +25°C, AV = 1, VIN = 10VP-P, RL = 10kΩ TO GND
100µs/DIV
FIGURE 29. OPERATION WITH RAIL-TO-RAIL INPUT AND OUTPUT
Output Current
The EL5120T is capable of output short circuit currents of
200mA (source and sink), and the device has built-in protection
circuitry, which limits the output current to ±200mA (typical).
To maintain maximum reliability, the continuous output current
should never exceed ±70mA. This ±70mA limit is determined by
the characteristics of the internal metal interconnects. Also, see
“Power Dissipation” on page 12 for detailed information on
ensuring proper device operation and reliability for temperature
and load conditions.
Thermal Shutdown
The EL5120T has a built-in thermal protection, which ensures
safe operation and prevents internal damage to the device due to
overheating. When the die temperature reaches +165°C
(typical), the device automatically shuts OFF the outputs by
putting them in a high impedance state. When the die cools by
+15°C (typical), the device automatically turns ON the outputs by
putting them in a low impedance (normal) operating state.
11
FN6895.0
September 27, 2012
Share Link: 