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參數(shù)資料
| 型號(hào)： | LT1256 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs 20-SO 0 to 70 |
| 中文描述： | 40MHz的視頻費(fèi)德和直流增益控制放大器 |
| 文件頁(yè)數(shù)： | 4/24頁(yè) |
| 文件大?。?/td> | 474K |
| 代理商： | LT1256 |
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4
LT1251/LT1256
SIGU
W
0
°
C
≤
T
A
≤
70
°
C, V
S
=
±
5V, V
CM
= 0V, V
FS
= 2.5V, I
C
= I
FS
= NULL = Open, Pins 5,10 = GND, unless otherwise noted.
SYMBOL
A
VOL
PARAMETER
Large-Signal Voltage Gain
CONDITIONS
V
O
= –3V to 3V, R
L
= 150
V
O
= –2.75V to 2.75V, R
L
= 150
V
O
= –3V to 3V, R
L
= 150
V
O
= –2.75V to 2.75V, R
L
= 150
No Load
R
L
= 150
MIN
83
83
0.75
0.75
±
4.0
±
3.0
±
2.75
±
14.0
1.2
±
30
±
20
TYP
93
MAX
UNITS
dB
dB
M
M
G
R
OL
Transresistance,
V
OUT
/
I
IN–
1.8
G
V
OUT
Maximum Output Voltage Swing
G
±
4.2
±
3.5
V
V
V
V
V
G
G
G
V
S
=
±
15V, No Load
V
S
= 5V, V
CM
= 2.5V, (Note 6)
V
S
=
±
5V
V
S
= 5V, V
CM
= V
O
= 2.5V
V
C
= V
FS
= 2.5V
V
C
= V
FS
= 1.25V
V
C
= V
FS
= 0V
V
C
= V
FS
= 2.5V, V
S
=
±
15V
V
C
= V
FS
= 0V, V
S
=
±
15V
±
14.2
3.8
I
O
Maximum Output Current
G
G
±
40
±
30
13.5
7.5
1.3
14.5
1.4
mA
mA
mA
mA
mA
mA
mA
I
S
Supply Current
G
G
G
G
G
17.0
9.5
1.8
18.5
2.0
COU
U
0
°
C
≤
T
A
≤
70
°
C, V
S
=
±
5V, V
FS
= 2.5V, I
C
= I
FS
= NULL = Open, Pins 5,10 = GND, unless otherwise noted.
W
SYMBOL
PARAMETER
Control Amplifier Input Offset Voltage
Full-Scale Amplifier Input Offset Voltage
Control Amplifier Input Resistance
Full-Scale Amplifier Input Resistance
Control Amplifier Input Bias Current
Full-Scale Amplifier Input Bias Current
Internal Control Resistor
Internal Full-Scale Resistor
Resistor Temperature Coefficient
Control Path Bandwidth
Control Path Rise and Fall Time
Control Path Transition Time
Control Path Propagation Delay
CONDITIONS
Pin 4 to Pin 3
Pin 11 to Pin 12
MIN
TYP
5
5
100
100
–300
–300
5
5
0.2
10
35
150
50
90
MAX
15
15
UNITS
mV
mV
M
M
G
G
G
25
25
G
G
–750
–750
3.75
4
nA
nA
k
k
G
R
C
R
FS
T
A
= 25
°
C
T
A
= 25
°
C
6.25
6
%/
°
C
MHz
Small Signal, V
C
= 100mV, (Note 7)
Small Signal, V
C
= 100mV, (Note 7)
0% to 100%
Small Signal,
V
C
= 100mV
V
C
from 0% or 100%
ns
ns
ns
ns
The
G
denotes specifications which apply over the specified operating
temperature range.
Note 1:
A heat sink may be required depending on the power supply
voltage.
Note 2:
Commercial grade parts are designed to operate over the
temperature range of –40
°
C to 85
°
C but are neither tested nor guaranteed
beyond 0
°
C to 70
°
C. Industrial grade parts specified and tested over
–40
°
C to 85
°
C are available on special request. Consult factory.
Note 3:
T
J
is calculated from the ambient temperature T
A
and the power
dissipation P
D
according to the following formulas:
LT1251CN/LT1256CN:
T
J
= T
A
+ (P
D
70
°
C/W)
LT1251CS/LT1256CS:
T
J
= T
A
+ (P
D
100
°
C/W)
Note 4:
Differential gain and phase are measured using a Tektronix
TSG120YC/NTSC signal generator and a Tektronix 1780R Video
Measurement Set. The resolution of this equipment is 0.1% and 0.1
°
. Five
identical amplifier stages were cascaded giving an effective resolution of
0.02% and 0.02
°
.
Note 5:
Differential gain and phase are best when the control is set at 0%
or 100%. See the Typical Performance Characteristics curves.
Note 6:
Tested with R
L
= 150
to 2.5V to simulate an AC coupled load.
Note 7:
Small-signal control path response is measured driving R
C
(Pin 5)
to eliminate peaking caused by stray capacitance on Pin 4.
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