HA-5002
larger valued capacitors since the impedance of the
capacitor is dependent on frequency.
Capacitive Loading
The HA-5002 will drive large capacitive loads without oscillation
but peak current limits should not be exceeded. Following the
formula I = Cdv/dt implies that the slew rate or the capacitive
load must be controlled to keep peak current below the
maximum or use the current limiting approach as shown. The
HA-5002 can become unstable with small capacitive loads
(50pF) if certain precautions are not taken. Stability is
It is also recommended that the bypass capacitors be
connected close to the HA-5002 (preferably directly to the
supply pins).
Operation at Reduced Supply Levels
The HA-5002 can operate at supply voltage levels as low as
±5V and lower. Output swing is directly affected as well as
slight reductions in slew rate and bandwidth.
enhanced by any one of the following: a source resistance in
series with the input of 50Ω to 1kΩ; increasing capacitive load
Short Circuit Protection
to 150pF or greater; decreasing C
to 20pF or less; adding
LOAD
The output current can be limited by using the following circuit:
an output resistor of 10Ω to 50Ω; or adding feedback
capacitance of 50pF or greater. Adding source resistance
generally yields the best results.
I
= 200mA
V+
V-
V+
OUTMAX
R
= ------------------------- = -------------------------
LIM
(CONTINUOUS)
I
I
OUTMAX
OUTMAX
R
V +
LIM
1
V +
2
OUT
IN
V -
2
V -
1
R
LIM
V-
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
T
– T
A
+ θ
CS SA
JMAX
+ θ
PLCC
P
= --------------------------------------------
θ
DMAX
PDIP
JC
Where: T
Device
= Maximum Junction Temperature of the
JMAX
CAN
T = Ambient
A
θ
θ
θ
= Junction to Case Thermal Resistance
= Case to Heat Sink Thermal Resistance
= Heat Sink to Ambient Thermal Resistance
JC
CS
SA
SOIC
T
– T
A
QUIESCENT POWER DISSIPATION
AT ±15V SUPPLIES
JMAX
θ
Graph is based on:
P
= -------------------------------
DMAX
JA
25
65
85
45
125
105
TEMPERATURE (°C)
FIGURE 2. MAXIMUM POWER DISSIPATION vs TEMPERATURE
FN2921.11
6
March 8, 2006