LT1256CS 查看數據表（PDF） - Linear Technology
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LT1256CS Datasheet PDF : 24 Pages
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LT1251/LT1256
SIG AL A PLIFIER DC CHARACTERISTICS
0°C ≤ TA ≤ 70°C, VS = ±5V, VCM = 0V, VFS = 2.5V, IC = IFS = NULL = Open, Pins 5,10 = GND, unless otherwise noted.
SYMBOL PARAMETER
AVOL
Large-Signal Voltage Gain
ROL
Transresistance, ∆VOUT/∆IIN–
VOUT
Maximum Output Voltage Swing
IO
Maximum Output Current
IS
Supply Current
CONDITIONS
MIN TYP MAX
VO = – 3V to 3V, RL = 150Ω
83
93
VO = – 2.75V to 2.75V, RL = 150Ω q
83
VO = – 3V to 3V, RL = 150Ω
0.75
1.8
VO = – 2.75V to 2.75V, RL = 150Ω q 0.75
No Load
q ±4.0 ±4.2
RL = 150Ω
±3.0 ±3.5
q ±2.75
VS = ±15V, No Load
VS = 5V, VCM = 2.5V, (Note 6)
q ±14.0 ±14.2
q
1.2
3.8
VS = ±5V
VS = 5V, VCM = VO = 2.5V
q ±30 ±40
q ±20 ±30
VC = VFS = 2.5V
q
VC = VFS = 1.25V
q
VC = VFS = 0V
q
VC = VFS = 2.5V, VS = ±15V
q
VC = VFS = 0V, VS = ±15V
q
13.5 17.0
7.5
9.5
1.3
1.8
14.5 18.5
1.4
2.0
UNITS
dB
dB
MΩ
MΩ
V
V
V
V
V
mA
mA
mA
mA
mA
mA
mA
CO TROL A D FULL SCALE A PLIFIER CHARACTERISTICS
0°C ≤ TA ≤ 70°C, VS = ±5V, VFS = 2.5V, IC = IFS = NULL = Open, Pins 5,10 = GND, unless otherwise noted.
SYMBOL
RC
RFS
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
MIN TYP MAX
Pin 4 to Pin 3
q
5
15
Pin 11 to Pin 12
q
5
15
q
25
100
q
25
100
q – 750 – 300
q – 750 – 300
TA = 25°C
TA = 25°C
3.75
5
6.25
4
5
6
0.2
Small Signal, VC = 100mV, (Note 7)
10
Small Signal, VC = 100mV, (Note 7)
35
0% to 100%
150
Small Signal, ∆VC = 100mV
50
VC from 0% or 100%
90
UNITS
mV
mV
MΩ
MΩ
nA
nA
kΩ
kΩ
%/ °C
MHz
ns
ns
ns
ns
The q 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: TJ is calculated from the ambient temperature TA and the power
dissipation PD according to the following formulas:
LT1251CN/LT1256CN: TJ = TA + (PD • 70°C/W)
LT1251CS/LT1256CS: TJ = TA + (PD • 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 RL = 150Ω to 2.5V to simulate an AC coupled load.
Note 7: Small-signal control path response is measured driving RC (Pin 5)
to eliminate peaking caused by stray capacitance on Pin 4.
4
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