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PDF LT1630 Data sheet ( Hoja de datos )
| Número de pieza | LT1630 | |
| Descripción | 30MHz/ 10V/us/ Dual/Quad Rail-to-Rail Input and Output Precision Op Amps | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LT1630/LT1631
30MHz, 10V/µs, Dual/Quad
Rail-to-Rail Input and Output
Precision Op Amps
FEATURES
s Gain-Bandwidth Product: 30MHz
s Slew Rate: 10V/µs
s Low Supply Current per Amplifier: 3.5mA
s Input Common Mode Range Includes Both Rails
s Output Swings Rail-to-Rail
s Input Offset Voltage, Rail-to-Rail: 525µV Max
s Input Offset Current: 150nA Max
s Input Bias Current: 1000nA Max
s Open-Loop Gain: 1000V/mV Min
s Low Input Noise Voltage: 6nV/√Hz Typ
s Low Distortion: – 91dBc at 100kHz
s Wide Supply Range: 2.7V to ±15V
s Large Output Drive Current: 35mA Min
s Dual in 8-Pin PDIP and SO Packages
s Quad in Narrow 14-Pin SO Package
U
APPLICATIONS
s Active Filters
s Rail-to-Rail Buffer Amplifiers
s Driving A/D Converters
s Low Voltage Signal Processing
s Battery-Powered Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTION
The LT®1630/LT1631 are dual/quad, rail-to-rail input and
output op amps with a 30MHz gain-bandwidth product and
a 10V/µs slew rate.
The LT1630/LT1631 have excellent DC precision over the
full range of operation. Input offset voltage is typically less
than 150µV and the minimum open-loop gain of one
million into a 10k load virtually eliminates all gain error. To
maximize common mode rejection, the LT1630/LT1631
employ a patented trim technique for both input stages,
one at the negative supply and the other at the positive
supply, that gives a typical CMRR of 106dB over the full
input range.
The LT1630/LT1631 maintain their performance for sup-
plies from 2.7V to 36V and are specified at 3V, 5V and±15V
supplies. The inputs can be driven beyond the supplies
without damage or phase reversal of the output. The
output delivers load currents in excess of 35mA.
The LT1630 is available in 8-pin PDIP and SO packages
with the standard dual op amp pinout. The LT1631 features
the standard quad op amp configuration and is available in
a 14-pin plastic SO package. These devices can be used as
plug-in replacements for many standard op amps to
improve input/output range and performance.
TYPICAL APPLICATION
Single Supply, 400kHz, 4th Order Butterworth Filter
2.32k
VIN
2.32k
6.65k
220pF
47pF
–
1/2 LT1630
+
VS/2
2.74k
2.74k
5.62k
470pF
22pF
–
1/2 LT1630
+
VOUT
1630/31 TA01
Frequency Response
10
0
–10
–20
–30
–40
–50
–60
–70
–80
VS = 3V, 0V
VIN = 2.5VP-P
–90
0.1k 1k
10k
100k
FREQUENCY (Hz)
1M 10M
1630/31 TA02
1
1 page  
LT1630/LT1631
ELECTRICAL CHARACTERISTICS
– 40°C < TA < 85°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 4)
SYMBOL PARAMETER
CONDITIONS
MIN
VOH Output Voltage Swing High (Note 6)
ISC Short-Circuit Current
IS Supply Current per Amplifier
GBW Gain-Bandwidth Product (Note 7)
No Load
ISOURCE = 0.5mA
ISOURCE = 15mA, VS = 5V
ISOURCE = 10mA, VS = 3V
VS = 5V
VS = 3V
f = 100kHz
q
q
q
q
q ±17
q ±12
q
q 14
SR Slew Rate (Note 8)
VS = 5V, AV = –1, RL = Open, VO = 4V q 3.5
VS = 3V, AV = –1, RL = Open
q 3.3
TYP
15
55
860
580
± 34
± 24
4.1
28
7
6.5
TA = 25°C, VS = ±15V, VCM = 0V, VOUT = 0V, unless otherwise noted.
SYMBOL
VOS
∆VOS
IB
∆IB
IOS
∆IOS
PARAMETER
CONDITIONS
Input Offset Voltage
VCM = V+
VCM = V–
Input Offset Voltage Shift
VCM = V– to V+
Input Offset Voltage Match (Channel-to-Channel) VCM = V–, V+ (Note 5)
Input Bias Current
VCM = V+
VCM = V–
Input Bias Current Shift
VCM = V– to V+
Input Bias Current Match (Channel-to-Channel) VCM = V+ (Note 5)
VCM = V– (Note 5)
Input Offset Current
VCM = V+
VCM = V–
Input Offset Current Shift
VCM = V– to V+
Input Noise Voltage
0.1Hz to 10Hz
en Input Noise Voltage Density
in Input Noise Current Density
CIN Input Capacitance
AVOL Large-Signal Voltage Gain
CMRR
PSRR
VOL
Channel Separation
Common Mode Rejection Ratio
CMRR Match (Channel-to-Channel) (Note 5)
Power Supply Rejection Ratio
PSRR Match (Channel-to-Channel) (Note 5)
Output Voltage Swing Low (Note 6)
VOH Output Voltage Swing High (Note 6)
f = 1kHz
f = 1kHz
f = 100kHz
VO = – 14.5V to 14.5V, RL = 10k
VO = – 10V to 10V, RL = 2k
VO = – 10V to 10V, RL = 2k
VCM = V– to V +
VCM = V– to V +
VS = ±5V to ±15V
VS = ±5V to ±15V
No Load
ISINK = 5mA
ISINK = 25mA
No Load
ISOURCE = 5mA
ISOURCE = 25mA
MIN
0
– 1100
1000
650
112
89
86
87
82
TYP
220
220
150
200
550
– 550
1100
20
20
20
20
40
300
6
0.9
3
5000
3500
134
106
110
105
107
16
150
600
15
250
1200
MAX
40
110
1700
1200
5.2
MAX
1000
1000
1000
1500
1100
0
2200
300
300
150
150
300
35
300
1200
40
500
2400
UNITS
mV
mV
mV
mV
mA
mA
mA
MHz
V/µs
V/µs
UNITS
µV
µV
µV
µV
nA
nA
nA
nA
nA
nA
nA
nA
nVP-P
nV/√Hz
pA/√Hz
pF
V/mV
V/mV
dB
dB
dB
dB
dB
mV
mV
mV
mV
mV
mV
5
5 Page 
TYPICAL PERFORMANCE CHARACTERISTICS
Harmonic Distortion vs Frequency
0
VS = 5V, 0V
AV = 1
–20 VIN = 2VP-P
RL = 150Ω
RL = 1k
–40
2ND
–60
3RD
–80 2ND
3RD
–100
100
200 500
FREQUENCY (kHz)
1000
16310/03010G30
Harmonic Distortion vs Frequency
0
VS = 5V, 0V
AV = –1
–20 VIN = 2VP-P
RL = 150Ω
RL = 1k
–40
2ND
–60
–80
–100
100
3RD
2ND
3RD
200 500
FREQUENCY (kHz)
1000
16310/03010G31
5V Small-Signal Response
VS = 5V, 0V
AV = 1
RL = 1k
1630/31 G26
±15V Small-Signal Response
VS = ±15V
AV = 1
RL = 1k
1630/31 G28
LT1630/LT1631
5V Large-Signal Response
VS = 5V, 0V
AV = 1
RL = 1k
1630/31 G27
±15V Large-Signal Response
VS = ±15V
AV = 1
RL = 1k
1630/31 G29
APPLICATIONS INFORMATION
Rail-to-Rail Input and Output
The LT1630/LT1631 are fully functional for an input and
output signal range from the negative supply to the posi-
tive supply. Figure 1 shows a simplified schematic of the
amplifier. The input stage consists of two differential
amplifiers, a PNP stage Q1/Q2 and an NPN stage Q3/Q4
that are active over different ranges of input common
mode voltage. The PNP differential input pair is active for
input common mode voltages VCM between the negative
supply to approximately 1.4V below the positive supply.
As VCM moves closer toward the positive supply, the
transistor Q5 will steer the tail current I1 to the current
mirror Q6/Q7, activating the NPN differential pair and the
PNP pair becomes inactive for the rest of the input com-
mon mode range up to the positive supply.
The output is configured with a pair of complementary
common emitter stages Q14/Q15 that enables the output
to swing from rail to rail. These devices are fabricated on
Linear Technology’s proprietary complementary bipolar
process to ensure similar DC and AC characteristics.
Capacitors C1 and C2 form local feedback loops that lower
the output impedance at high frequencies.
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LT1630.PDF ] | |
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