RT2903H
RobuST low-power dual voltage comparators
Datasheet - production data
D
SO8
(plastic micropackage)
Pin connections (top view)
1 - Output 1
2 - Inverting inpput 1
3 - Non-inverting input 1
4 - VCC
-
5 - Non-inverting input 2
6 - Inverting input 2
7 - Output 2
8 - VCC
+
Features
•
Wide single supply voltage range or dual supplies: 2 V to 36 V or ±1 V to ±18 V
•
Very low supply current (0.4 mA) independent of supply voltage
(1 mW/comparator at 5 V)
•
Low input bias current: 25 nA typ.
•
Low input offset current: ±5 nA typ.
•
Input common-mode voltage range includes ground
•
Low output saturation voltage: 250 mV typ.
(I
O
= 4 mA)
•
Differential input voltage range equal to the supply voltage
•
TTL, DTL, ECL, MOS, CMOS compatible outputs
•
Intended for use in aerospace and defense applications:
−
Dedicated traceability and part marking
−
Approval documents available for production parts
−
Adapted extended life time and obsolescence management
−
Extended product change notification process
−
Designed and manufactured to meet sub ppm quality goals
−
Advanced mold and frame designs for superior resilience to harsh environments (acceleration, EMI, thermal, humidity)
−
Extended screening capability on request
−
Single fabrication, assembly, and test site
−
Temperature range (-40 °C to 150 °C)
Applications
•
Aerospace and defense
•
Harsh environments
Description
This device consists of two independent lowpower voltage comparators designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible.
These comparators also have a unique characteristic in that the input common-mode voltage range includes ground even though operated from a single power supply voltage.
October 2014 DocID026955 Rev 1
This is information on a product in full production.
1/11 www.st.com
Contents RT2903H
Contents
1 Absolute maximum ratings and operating conditions ................. 3
2 Schematic diagram .......................................................................... 4
3 Electrical characteristics ................................................................ 5
4 Package information ....................................................................... 7
4.1
SO8 package information .................................................................. 8
5 Ordering information ....................................................................... 9
6 Revision history ............................................................................ 10
2/11 DocID026955 Rev 1
RT2903H
1
Absolute maximum ratings and operating conditions
Absolute maximum ratings and operating conditions
Symbol
Table 1: Absolute maximum ratings
Parameter Value Unit
V
CC
V id
Supply voltage
Differential input voltage
V in
R thjc
Input voltage
Output short-circuit duration
(1)
R thja
Thermal resistance junction-to-ambient
(2)
Thermal resistance junction-to-case
(2)
T j
ESD
Maximum junction temperature
HBM: human body model
(3)
MM: machine model
(4)
CDM: charged device model
(5)
T stg
Storage temperature
±18 or 36
±36
-0.3 to 36
20
125
40
160
800
200
1500
-65 to 150
V mA
°C/W
°C
V
°C
Notes:
(1)
Short-circuit from the output to V
CC
+
can cause excessive heating and eventual destruction. The maximum output current is approximately 20 mA, independent of the magnitude of V
CC
+
.
(2)
Short-circuits can cause excessive heating and destructive dissipation. Values are typical.
(3)
Human body model: A 100 pF capacitor is charged to the specified voltage and then discharged through a
1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.
(4)
Machine model: A 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected pin combinations while the other pins are floating.
(5)
Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins.
Symbol
V
CC
+
T oper
V icm
Table 2: Operating conditions
Parameter
Supply voltage
Operating free air temperature range
Input common mode voltage range
(V
CC
= 30 V)
(1)
T amb
= 25 °C
T min
≤ T amb
≤ T max
Value
2 to 6
-40 to 150
0 to (V
CC
+
) - 1.5
0 to (V
CC
+
) - 2
Unit
V
°C
V
Notes:
(1)
The input common-mode voltage of either input signal voltage should not be allowed to go negative by more
+ than 0.3 V. The upper end of the common-mode voltage range is (V
CC
) – 1.5 V, but either or both inputs can go to 30 V without damage.
DocID026955 Rev 1 3/11
Schematic diagram
2 Schematic diagram
Figure 1: Schematic diagram (1/2 RT2903H)
VCC+
3.5µA 100µA 3.5µA 100µA
RT2903H
Non-Inverting
Input
Inverting
Input
VCCVCC-
VCC-
Vo
4/11 DocID026955 Rev 1
RT2903H Electrical characteristics
3
Symbol
V io
I io
I ib
A vd
I
CC
V
ID
V
OL
I
OH
I sink t re t rel
Electrical characteristics
Table 3: V
CC
+
= 5 V, V
CC
-
= ground, T amb
= 25 °C (unless otherwise specified)
Parameter Test conditions Min. Typ. Max.
Input offset voltage
(1)
Input offset current
T min
≤ T amb
≤ T max
T min
≤ T amb
≤ T max
Input bias current
(2)
T min
≤ T amb
≤ T max
Large signal voltage gain, V
CC
+
= 15 V, R
L
= 15 kΩ, V o
= 1 to 11 V
Supply current
(all comparators)
V
CC
+
= 5 V, no load
V
CC
+
= 30 V, no load
Differential input voltage
(3)
Low level output voltage
High level output current
V id
= -1 V, I sink
= 4 mA
T min
≤ T amb
≤ T max
V
CC
+
= V o
= 30 V, V id
= 1 V
T min
≤ T amb
≤ T max
V id
= -1 V, V o
= 1.5 V
Output sink current
T min
≤ T amb
≤ T max
Small signal response time, R
L
= 5.1 kΩ connected to V
CC
+ (4)
Large signal response time,
TTL input, V ref
= 1.4 V,
R
L
= 5.1 kΩ to V
CC
+ (5)
Output signal at 50 % of final value
Output signal at 95 % of final value
6
2
25
1
5
7
15
50
25
150
250
400
200
0.4 1
1 2.5
V
CC
+
250 400
800
0.1
1
16
500
1.3
1
Unit mV nA
V/mV mA
V mV nA
µA mA
µs ns
µs
Notes:
(1)
At output switch point, V
O
≈ 1.4 V, R
S
= 0 Ω with V
CC
+
from 5 V to 30 V, and over the full input common-mode range
(0 V to (V
CC
+
) – 1.5 V).
(2)
The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output, so there is no load charge on the reference of input lines.
(3)
Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the comparator provides a proper output state. The low input voltage state must not be less than –0.3 V
(or 0.3 V below the negative power supply, if used)
(4)
The response time specified is for a 100 mV input step with 5 mV overdrive.
(5)
Maximum values are guaranteed by design and evaluation.
DocID026955 Rev 1 5/11
Electrical characteristics
Figure 2: Supply current vs. supply voltage
1.0
RT2903H
Figure 3: Input current vs. supply voltage
50
0.8
T
AMB
= - 40 °C
T
AMB
= + 25 °C
40
T
AMB
= - 40 °C
0.6
30
0.4
T
AMB
= + 125 °C 20
T
AMB
= + 25 °C
T
AMB
= + 150 °C
0.2
T
AMB
= + 150 °C
10
T
AMB
= + 125 °C
0.0
0 10 20
SUPPLY VOLTAGE (V)
30 40
Figure 4: Output saturation voltage vs. output current
(V
CC
= 5 V)
10
0
0 10 20
SUPPLY VOLTAGE (V)
30 40
Figure 5: Response time for various input overdrives - negative transition
1
0.1
0.01
T
AMB
= + 150 °C
T
AM B
= + 125 °C
T
AM B
= + 25 °C
T
AMB
= - 40 °C
0.1
1
OUTPUT SINK CURRENT (mA)
10 100
Figure 6: Response time for various input overdrives - positive transition
6/11 DocID026955 Rev 1
RT2903H
4
Package information
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK
® specifications, grade definitions and product status are available at: www.st.com
.
ECOPACK
®
is an ST trademark.
DocID026955 Rev 1 7/11
Package information
4.1 SO8 package information
Figure 7: SO8 package mechanical drawing
RT2903H
8/11
Ref.
D
E
E1 e h
L
L1 k ccc
A
A1
A2 b c
Min.
0.10
1.25
0.28
0.17
4.80
5.80
3.80
0.25
0.40
1°
Table 4: SO8 package mechanical data
Dimensions
Millimeters
Typ. Min. Max.
1.75
0.25
4.90
6.00
3.90
1.27
0.48
0.23
5.00
6.20
4.00
0.50
1.27
0.004
0.049
0.011
0.007
0.189
0.228
0.150
0.010
0.016
1.04
8°
0.10
1°
Inches
Typ.
0.193
0.236
0.154
0.050
0.040
Max.
0.069
0.010
0.019
0.010
0.197
0.244
0.157
0.020
0.050
8°
0.004
DocID026955 Rev 1
RT2903H
5 Ordering information
Order code Temperature range
Table 5: Order codes
Package
RT2903HYDT -40 °C to 150 °C SO8
Ordering information
Packaging
Tape and reel
Marking
R2903HY
DocID026955 Rev 1 9/11
Revision history
6 Revision history
Date Revision
Table 6: Document revision history
Changes
08-Oct-2014 1 Initial release
RT2903H
10/11 DocID026955 Rev 1
RT2903H
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2014 STMicroelectronics – All rights reserved
DocID026955 Rev 1 11/11
