參數(shù)資料
型號(hào)： OPA688
元件分類： 運(yùn)動(dòng)控制電子
英文描述： Unity Gain Stable, Wideband VOLTAGE LIMITING AMPLIFIER
中文描述： 單位增益穩(wěn)定，寬帶電壓限幅放大器
文件頁(yè)數(shù)： 3/16頁(yè)
文件大?。?/td> 185K
代理商： OPA688
3
OPA688
THERMAL CHARACTERISTICS
Temperature Range
Thermal Resistance
P
8-Pin DIP
U
8-Pin SO-8
Specification: P, U
Junction-to-Ambient
–40 to +85
—
—
—
°
C
Typ
C
100
125
—
—
—
—
—
—
°
C/W
°
C/W
Typ
Typ
C
C
NOTES: (1) Junction Temperature = Ambient Temperature for low temperature limit and 25
°
C guaranteed specifications. Junction Temperature = Ambient Temperature
+ 23
°
C at high temperature limit guaranteed specifications. (2) TEST LEVELS: (A) 100% tested at 25
°
C. Over temperature limits by characterization and simulation.
(B) Limits set by characterization and simulation. (C) Typical value for information only. (3) Current is considered positive out of node. (4) CMIR tested as < 3dB
degradation from minimum CMRR at specified limits. (5) I
(V
bias current) is positive, and I
(V
bias current) is negative, under these conditions. See Note 3,
Figure 1 and Figure 8 . (6) Limiter feedthrough is the ratio of the output magnitude to the sinewave added to V
H
(or V
L
) when V
IN
= 0. (7) V
H
slew rate conditions are:
V
IN
= +2V, G = +2, V
= –2V, V
= step between 2V and 0V. V
slew rate conditions are similar. (8) Linearity Guardband is defined for an output sinusoid (f = 5MHz,
V
O
= 0V
DC
±
1Vp-p) centered between the limiter levels (V
H
and V
L
). It is the difference between the limiter level and the peak output voltage where SFDR decreases
by 3dB (see Figure 9).
SPECIFICATIONS—V
S
=
±
5V
(CONT)
G = +2, R
L
= 500
, R
F
= 402
, V
H
= –V
L
= 2V (Figure 1 for AC performance only), unless otherwise noted.
OPA688U, P
TYP
GUARANTEED
(1)
0
°
C to
+70
°
C
–40
°
C to
+85
°
C
MIN/
MAX
LEVEL
(2)
TEST
PARAMETER
CONDITIONS
+25
°
C
+25
°
C
UNITS
AC PERFORMANCE (see Figure 2)
Small Signal Bandwidth
V
< 0.2Vp-p
G = +1, R
= 25
G = +2
G = –1
V
< 0.2Vp-p
G = +1, R
F
= 25
, V
O
< 0.2Vp-p
V
O
< 0.2Vp-p
V
O
= 2Vp-p
515
240
190
275
10
50
240
—
110
—
130
—
—
110
—
105
—
125
—
—
105
—
100
—
120
—
—
100
MHz
MHz
MHz
MHz
dB
MHz
MHz
Typ
Min
Typ
Min
Typ
Typ
Min
C
B
C
B
C
C
B
Gain-Bandwidth Product (G
≥
+5)
Gain Peaking
0.1dB Gain Flatness Bandwidth
Large Signal Bandwidth
Step Response:
Slew Rate
Rise/Fall Time
Settling Time: 0.05%
Spurious Free Dynamic Range
Input Noise:
Voltage Noise Density
Current Noise Density
2V Step
0.2V Step
1V Step
1000
2.3
12
64
800
2.6
—
60
770
2.7
—
56
650
3
—
51
V/
μ
s
ns
ns
dB
Min
Max
Typ
Min
B
B
C
B
f = 5MHz, V
O
= 2Vp-p
f
≥
1MHz
f
≥
1MHz
6.3
2.0
7.2
2.5
7.8
2.9
8
nV/
√
Hz
pA/
√
Hz
Max
Max
B
B
3.6
DC PERFORMANCE
Open Loop Voltage Gain (A
OL
)
Input Offset Voltage
Average Drift
Input Bias Current
(3)
Average Drift
Input Offset Current
Average Drift
V
CM
= 2.5V
V
O
=
±
0.5V
52
±
2
—
+6
—
±
0.3
—
46
±
6
—
±
12
—
±
2
—
44
±
7
±
14
±
13
–60
±
3
±
10
43
±
9
±
14
±
20
–90
±
4
±
10
dB
mV
μ
V/
°
C
μ
A
nA/
°
C
μ
A
nA/
°
C
Min
Max
Max
Max
Max
Max
Max
A
A
B
A
B
A
B
SPECIFICATIONS—V
S
= +5V
G = +2, R
L
= 500
tied to V
CM
= 2.5V, R
F
= 402
, V
L
= V
CM
–1.2V, V
H
= V
CM
+1.2V (Figure 2 for AC performance only), unless otherwise noted.
OPA688U, P
TYP
GUARANTEED
(1)
0
°
C to
+70
°
C
–40
°
C to
+85
°
C
MIN/
MAX
LEVEL
(2)
TEST
PARAMETER
CONDITIONS
+25
°
C
+25
°
C
UNITS
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