FT1011/FT1011A
Voltage Comparator
Voltage Comparator
Pin Compatible with FT111 Series Devices
Guaranteed
Max 0.5mV Input Offset Voltage
Guaranteed
Max 25nA Input Bias Current
Guaranteed
Max 3nA Input Offset Current
Guaranteed
Max 250ns Response Time
Guaranteed
Min 200,000 Voltage Gain
50mA Output Current Source or Sink
±30V
Differential Input Voltage
Fully Specified for Single 5V
Operation
s
s
s
s
s
s
s
s
s
Applications
s
s
s
s
s
s
s
SAR A/D Converters
Voltage-to-Frequency Converters
Precision RC Oscillator
Peak Detector
Motor Speed Control
Pulse Generator
Relay/Lamp
Driver
The FT1011 is a general purpose comparator with sig-
nificantly better input characteristics than the FT111.
Although pin compatible with the FT111, 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
15µV/°C. Additionally, the supply current is lower by a
factor of two with no loss in speed. The FT1011 is several
times faster than the FT111 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
FT1011 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
FT1011 is less than 0.5LSB. The FT1011 retains all the
versatile features of the FT111, 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 V
–
and 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.
Response Time vs Overdrive
500
450
400
RESPONSE TIME (ns)
350
300
250
200
150
100
50
0
0.1
1
10
OVERDRIVE (mV)
100
FALLING
OUTPUT
RISING
OUTPUT
U
Features
Description
U
U
FT1011/FT1011A
Voltage Comparator
Absolute Maximum Rating
Supply Voltage (Pin 8 to Pin 4) .............................. 36V
Output to Negative Supply (Pin 7 to Pin 4)
FT1011AC, FT1011C .......................................... 40V
FT1011AI, FT1011I ............................................ 40V
FT1011AM, FT1011M .................................... 50V
Ground to Negative Supply (Pin 1 to Pin 4) ............ 30V
Differential Input Voltage ......................................
±36V
Voltage at STROBE Pin (Pin 6 to Pin 8) .................... 5V
TOP VIEW
V
+
8
GND
1
INPUT
2
INPUT
3
+
–
ORDER PART
NUMBER
7
OUTPUT
6
BALANCE/
STROBE
5
BALANCE
4
V
–
H PACKAGE
8-LEAD TO-5 METAL CAN
FT1011ACH
FT1011CH
FT1011AMH
FT1011MH
T
JMAX
= 150°C,
θ
JA
= 150°C/ W,
θ
JC
= 45°C/ W
Electrical Characteristics
The
q
denotes
the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
S
=
±15V,
V
CM
= 0V, R
S
= 0Ω, V
1
= –15V, output at pin 7 unless otherwise noted.
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
*Input Offset Voltage
I
OS
I
B
*Input Offset Current
Input Bias Current
*Input Bias Current
CONDITIONS
(Note 4)
q
R
S
≤
50k (Note 5)
q
(Note 5)
q
(Note 4)
(Note 5)
q
*
Indicates parameters which are guaranteed for all supply voltages, including
a single 5V supply. See Note 5.
2
U
Package/Order Information
W
U
U
W W
W
(Note 1)
Input Voltage (Note 2) ....................... Equal to Supplies
Output Short-Circuit Duration .............................. 10 sec
Operating Temperature Range (Note 3)
FT1011AC, FT1011C ............................... 0°C to 70°C
FT1011AI, FT1011I ........................... – 40°C to 85°C
FT1011AM, FT1011M
– 55°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
TOP VIEW
GND
INPUT
INPUT
V
–
1
2
3
4
+
–
ORDER PART NUMBER
8
7
V+
OUTPUT
6 BALANCE/
STROBE
5
BALANCE
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
FT1011ACN8
FT1011CN8
FT1011CS8
FT1011AIS8
FT1011IS8
S8 PART MARKING
1011
1011AI
1011I
ORDER PART NUMBER
FT1011ACJ8 FT1011AMJ8
FT1011CJ8 FT1011MJ8
T
JMAX
= 150°C,
θ
JA
= 130°C/ W(N8)
T
JMAX
= 150°C,
θ
JA
= 150°C/ W(S8)
J8 PACKAGE 8-LEAD CERDIP
T
JMAX
= 150°C,
θ
JA
= 100°C/ W(J8)
FT1011AC/AI/AM
MIN
TYP
MAX
0.3
0.5
1.0
0.75
1.50
0.2
15
20
3
5
25
35
50
FT1011C/I/M
MIN
TYP
MAX
0.6
1.5
3.0
2.0
3.0
0.2
20
25
4
6
50
65
80
UNITS
mV
mV
mV
mV
nA
nA
nA
nA
nA
Ashley Crt, Henley,
Marlborough, Wilts, SN8 3RH UK
Tel: +44(0)1264 731200
Fax:+44(0)1264 731444
E-mail
info@forcetechnologies.co.uk
tech@forcetechnologies.co.uk
sales@forcetechnologies.co.uk
www.forcetechnologies.co.uk
Unless otherwise stated in this SCD/Data sheet, Force Technologies Ltd reserve the right to make changes, without notice, in the products, Includ
-ing circuits, cells and/or software, described or contained herein in order to improve design and/or performance. Force Technologies resumes no
responsibility or liability for the use of any of these products, conveys no licence or any title under patent, copyright, or mask work to these
products, and makes no representation or warranties that that these products are free from patent, copyright or mask work infringement, unless
otherwise specified.
products, and makes no representation or warranties that that these products are free from patent, copyright or mask work infringement, unless
Life Support Applications
Force Technologies products are not designed for use in life support appliances, devices or systems where malfunction of a Force Technologies
product can reasonably be expected to result in a personal injury. Force Technologies customers using or selling Force Technologies products
for use in such applications do so at their own risk and agree to fully indemnify Force Technologies for any damages resulting from such
improper use or sale.
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