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LT1011AIS8 Datasheet(PDF) 1 Page - Linear Technology

Part # LT1011AIS8
Description  Voltage Comparator
Download  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1011AIS8 Datasheet(HTML) 1 Page - Linear Technology

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1
LT1011/LT1011A
Voltage Comparator
The LT
®1011 is a general purpose comparator with sig-
nificantly better input characteristics than the LM111.
Although pin compatible with the LM111, it offers four
times lower bias current, six times lower offset voltage and
five times higher voltage gain. Offset voltage drift, a
previously unspecified parameter, is guaranteed at
15
µV/°C. Additionally, the supply current is lower by a
factor of two with no loss in speed. The LT1011 is several
times faster than the LM111 when subjected to large
overdrive conditions. It is also fully specified for DC
parameters and response time when operating on a single
5V supply. These parametric improvements allow the
LT1011 to be used in high accuracy (
≥12-bit) systems
without trimming. In a 12-bit A/D application, for instance,
using a 2mA DAC, the offset error introduced by the
LT1011 is less than 0.5LSB. The LT1011 retains all the
versatile features of the LM111, including single 3V to
±18V supply operation, and a floating transistor output
with 50mA source/sink capability. It can drive loads refer-
enced to ground, negative supply or positive supply, and
is specified up to 50V between Vand the collector output.
A differential input voltage up to the full supply voltage is
allowed, even with
±18V supplies, enabling the inputs to
be clamped to the supplies with simple diode clamps.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
Pin Compatible with LM111 Series Devices
s
Guaranteed Max 0.5mV Input Offset Voltage
s
Guaranteed Max 25nA Input Bias Current
s
Guaranteed Max 3nA Input Offset Current
s
Guaranteed Max 250ns Response Time
s
Guaranteed Min 200,000 Voltage Gain
s
50mA Output Current Source or Sink
s
±30V Differential Input Voltage
s
Fully Specified for Single 5V Operation
s
SAR A/D Converters
s
Voltage-to-Frequency Converters
s
Precision RC Oscillator
s
Peak Detector
s
Motor Speed Control
s
Pulse Generator
s
Relay/Lamp Driver
10
µs 12-Bit A/D Converter
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
DESCRIPTIO
6012
12-BIT
D/A CONVERTER
12
PARALLEL
OUTPUTS
PARALLEL
OUTPUTS
*R2 AND R4
SHOULD TC TRACK
R6
820
R3
6.98k
R2*
6.49k
R1
1k
FULL-SCALE
TRIM
LM329
7V
R4*
2.49k
R5
1k
11 10 9
8
7
6
5
4
32
2
3
0.001
µF
7
1
20
14
15
16
17
19
18
–15V
3.9k
15V
15V
13
24
5V
45678916 17 18 19 20 21
SERIAL OUTPUT
INPUT
0V TO 10V
5V
7475
LATCH
AM2504
SAR REGISTER
START
CLOCK f = 1.4MHz
1011 TA01
12
SCP
D
CC
S
E
+
LT1011A
OVERDRIVE (mV)
0.1
200
250
300
350
400
1
10
100
1011 TA02
150
100
50
0
450
500
FALLING
OUTPUT
RISING
OUTPUT
Response Time vs Overdrive


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