OPA660 Burr-Brown, OPA660 Datasheet - Page 8

• Manufacturer Part Number: OPA660
• Description: Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER AND BUFFER
• Manufacturer: Burr-Brown

APPLICATIONS INFORMATION
The OPA660 operates from
maximum). Do not attempt to operate with larger power
supply voltages or permanent damage may occur.
Inputs of the OPA660 are protected with internal diode
clamps as shown in the simplified schematic, Figure 1. These
protection diodes can safely conduct 10mA, continuously
(30mA peak). If input voltages can exceed the power supply
voltages by 0.7V, the input signal current must be limited.
FIGURE 1. Simplified Circuit Diagram.
TYPICAL PERFORMANCE CURVES
I
Q
= 20mA, T
–30
–40
–50
–60
–70
–80
10M
A
R
V
I
= +25 C, and V
Q
100
O
L
= 20mA
= 150
®
= 0.5Vp-p
HARMONIC DISTORTION vs FREQUENCY
OPA660
I Adj.
Q
(1)
Measurement Limit
Circuitry
20M
50k
Bias
S
= 5V unless otherwise noted.
Frequency (Hz)
2f
5V power supplies ( 6V
V
(5)
I
40M
BUFFER
R (ext.)
Q
60M
3f
100M
(7)
(4)
+V
–V
CC
CC
8
V
(6)
= +5V
O
= –5V
The buffer output is not current-limited or protected. If the
output is shorted to ground, currents up to 60mA could flow.
Momentary shorts to ground (a few seconds) should be
avoided, but are unlikely to cause permanent damage. The
same cautions apply to the OTA section when connected as
a buffer (see Basic Applications Circuits, Figure 6b).
(CONT)
(3)
B
–30
–40
–50
–60
–70
–80
10M
R
I
Q
L
OTA
= 20mA
= 500
HARMONIC DISTORTION vs FREQUENCY
Measurement Limit
20M
Frequency (Hz)
(2)
E
40M
2Vp-p
2f
2Vp-p
3f
0.5Vp-p
60M
3f
(8)
C
0.5Vp-p
2f
100M