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PDF LT1632 Data sheet ( Hoja de datos )
| Número de pieza | LT1632 | |
| Descripción | 45MHz/ 45V/us/ Dual/Quad Rail-to-Rail Input and Output Precision Op Amps | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LT1632/LT1633
45MHz, 45V/µs, Dual/Quad
Rail-to-Rail Input and Output
Precision Op Amps
FEATURES
s Gain-Bandwidth Product: 45MHz
s Slew Rate: 45V/µs
s Low Supply Current per Amplifier: 4.3mA
s Input Common Mode Range Includes Both Rails
s Output Swings Rail-to-Rail
s Input Offset Voltage, Rail-to-Rail: 1350µV Max
s Input Offset Current: 440nA Max
s Input Bias Current: 2.2µA Max
s Open-Loop Gain: 800V/mV Min
s Low Input Noise Voltage: 12nV/√Hz Typ
s Low Distortion: – 92dBc 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
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
DESCRIPTION
The LT®1632/LT1633 are dual/quad, rail-to-rail input and
output op amps with a 45MHz gain-bandwidth product and
a 45V/µs slew rate.
The LT1632/LT1633 have excellent DC precision over the
full range of operation. Input offset voltage is typically less
than 400µV and the minimum open-loop gain of 0.8
million into a 10k load virtually eliminates all gain error.
Common mode rejection is typically 83dB over the full rail-
to-rail input range when on a single 5V supply for excellent
noninverting performance.
The LT1632/LT1633 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 LT1632 is available in 8-pin PDIP and SO packages
with the standard dual op amp pinout. The LT1633 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Single Supply, 40dB Gain, 550kHz Instrumentation Amplifier
R1
20k
VIN–
R2
2k
–
1/2 LT1632
+
R5
432Ω
R4
20k
R3
2k
VIN+
3V
–
1/2 LT1632
+
VOUT
1630/31 F02
Frequency Response
50
40 DIFFERENTIAL INPUT
30
20
10
0
COMMON MODE INPUT
–10
–20
–30
–40
–50
–60
–70
100
1k 10k 100k
FREQUENCY (Hz)
VS = 3V
AV = 100
1M 10M
1632/33 TA02
1
1 page  
LT1632/LT1633
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 20
SR Slew Rate (Note 8)
VS = 5V, AV = –1, RL = Open, VO = 4V
VS = 3V, AV = –1, RL = Open
q
q
11
9
TYP
16
55
860
580
±36
±24
4.95
40
22
18
MAX
40
110
1700
1200
6.2
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 TYP MAX
500 2200
500 2200
360 2200
700 3500
0 1.15
– 2.2 – 1.15
2.2
0
2.3 4.4
50 880
50 880
50 440
50 440
36 880
400
12
1.6
3
800 5000
400 2500
110 127
82 98
80 101
82 96
80 101
16 35
150 300
600 1200
16 40
250 500
1200 2400
UNITS
mV
mV
mV
mV
mA
mA
mA
MHz
V/µs
V/µs
UNITS
µV
µV
µV
µV
µA
µA
µA
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
3RD
–60
2ND
–80
–100
100
3RD
2ND
200 500 1000
FREQUENCY (kHz)
2000
1632/33 G29
5V Small-Signal Response
VS = 5V, 0V
AV = 1
RL = 1k
163233 G25
Harmonic Distortion vs Frequency
0
VS = 5V, 0V
AV = –1
–20 VIN = 2VP-P
RL = 150Ω
RL = 1k
–40
2ND
3RD
–60
3RD 2ND
–80
–100
100
200 500 1000
FREQUENCY (kHz)
2000
16312/03030G30
±15V Small-Signal Response
VS = ±15V
AV = 1
RL = 1k
1632/33 G27
LT1632/LT1633
5V Large-Signal Response
VS = 5V, 0V
AV = 1
RL = 1k
1632/33 G26
±15V Large-Signal Response
VS = ±15V
AV = 1
RL = 1k
1632/33 G28
APPLICATIONS INFORMATION
Rail-to-Rail Input and Output
The LT1632/LT1633 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 1.5V 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.
Power Dissipation
The LT1632/LT1633 amplifiers combine high speed and
large output current drive in a small package. Because the
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LT1632.PDF ] | |
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