View LM2903D_262303.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

LM2903
LOW POWER DUAL VOLTAGE COMPARATORS
s WIDE SINGLE SUPPLY VOLTAGE RANGE
OR DUAL SUPPLIES +2V TO +36V OR 1V TO 18V
s VERY LOW SUPPLY CURRENT (0.4mA)
INDEPENDENT OF SUPPLY VOLTAGE (1mW/comparator at +5V)
s LOW INPUT BIAS CURRENT: 25nA TYP s LOW INPUT OFFSET CURRENT: 5nA TYP s INPUT COMMON-MODE VOLTAGE RANGE
INCLUDES GROUND
N DIP8 (Plastic Package)
s LOW OUTPUT SATURATION VOLTAGE:
250mV TYP. (IO = 4mA)
s DIFFERENTIAL INPUT VOLTAGE RANGE
EQUAL TO THE SUPPLY VOLTAGE
s TTL, DTL, ECL, MOS, CMOS COMPATIBLE
OUTPUTS DESCRIPTION This device consists of two independent low power voltage comparators designed specifically to operate from a single 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. ORDER CODE
Part Number LM2903 Temperature Range -40C, +125C Package N * D * P *
D SO8 (Plastic Micropackage)
P TSSOP8 (Thin Shrink Small Outline Package)
PIN CONNECTIONS (top view)
N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT) P = Thin Shrink Small Outline Package (TSSOP) - only available in Tape & Reel (PT)
June 2003
1/9
LM2903
SCHEMATIC DIAGRAM (1/2 LM2903)
VCC+
3.5A
100A
3.5A
100A
Non-Inverting Input
Vo VCCInverting Input VCC-
VCC-
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VID VI Supply Voltage Differential Input Voltage Input Voltage Output Short-circuit to Ground Power Dissipation 2) Pd TJunction Junction Temperature Tstg
1. 2.
Parameter
Value 18 to 36 36 -0.3 to +36
Unit V V V
1)
Infinite 1250 710 625 +150 -65 to +150 mW C C
DIP8 SO8 TSSOP8
Storage Temperature Range
Short-circuit from the output to Vcc+ can cause excessive heating and eventual destruction. The maximum output current is approximately 20mA, independent of the magnitude of Vcc + Pd is calculated with T amb = +25C, Tj = +150C and R thja = 100C/W for DIP8 package = 175C/W for SO8 package = 200C/W for TSSOP8 package
OPERATING CONDITIONS
Symbol Vicm Toper Parameter Common Mode Input Voltage Range Operating Free-Air Temperature range Value 0 to VCC -1.5 -40 to +125
+
Unit V C
2/9
LM2903
ELECTRICAL CHARACTERISTICS VCC+ = 5V, V cc- = GND, Tamb = 25C (unless otherwise specified)
Symbol VIO Input Offset Voltage 1) Tamb = +25C Tmin Tamb Tmax. Input Offset Current Tamb = +25C Tmin Tamb Tmax. Input Bias Current 2) Tamb = +25C Tmin Tamb Tmax. Large Signal Voltage Gain (Vcc = 15V,RL=15k, Vo=1 to 11V) Supply Current (all comparators) VCC = 5V, no load VCC = 30V, no load Input Common Mode Voltage Range (Vcc= 30V) 3) Tamb = +25C Tmin Tamb Tmax. Differential Input Voltage 4) Low Level Output Voltage (Vid = -1V, Isink = 4mA) Tamb = +25C Tmin Tamb Tmax High Level Output Current (VCC =Vo =30V, Vid = 1V) Tamb = +25C Tmin Tamb Tmax Output Sink Current (Vid = -1V,Vo = 1.5V) Small Signal Response Time
5)
Parameter
Min.
Typ. 1
Max. 7 15 50 150 250 400
Unit mV
IIO
5
nA
IIB AVD ICC
25 25 200 0.4 1 0 0
nA V/mV
1 2.5 VCC+-1.5 VCC+-2 VCC+
mA
VICM VID VOL
V V mV
250
400 700
IOH ISINK tRE
0.1 1 6 16 1.3
nA A m s
(RL = 5.1k to VCC )
+
tREL
Large Signal Response Time 6) TTL Input (Vref = +1.4 V, RL=5.1k to VCC+) Output Signal at 50% of final value Output Signal at 95 % of final value
500 1
ns s
1. 2. 3. 4.
At output switch point, VO 1.4V, RS = 0 with VCC+ from 5V to 30V, and over the full input common-mode range (0V to VCC+ -1.5V). 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 no loading charge exists on the reference of input lines The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode voltage range is VCC+ -1.5V, but either or both inputs can go to +30V without damage. 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 will provide a proper output state. The low input voltage state must not be less than -0.3V (or 0.3V below the negative power supply, if used) The response time specified is for a 100mV input step with 5mV overdrive. Maximum values are guaranteed by design & evaluation.
5. 6.
3/9
LM2903
SUPPLY CURRENT versus SUPPLY VOLTAGE RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES - NEGATIVE TRANSITION
INPUT CURRENT versus SUPPLY VOLTAGE
RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES - POSITIVE TRANSITION
OUTPUT SATURATION VOLTAGE versus OUTPUT CURRENT
4/9
LM2903
TYPICAL APPLICATIONS BASIC COMPARATOR
LOW FREQUENCY OP AMP
DRIVING CMOS
LOW FREQUENCY OP AMP
DRIVING TTL
TRANSDUCER AMPLIFIER
5/9
LM2903
LOW FREQUENCY OP AMP WITH OFFSET ADJUST ZERO CROSSING DETECTOR (single power supply)
TWO-DECADE HIGH-FREQUENCY VCO
LIMIT COMPARATOR
CRYSTAL CONTROLLED OSCILLATOR
SPLIT-SUPPLY APPLICATIONS ZERO CROSSING DETECTOR
COMPARATOR WITH A NEGATIVE REFERENCE
6/9
LM2903
PACKAGE MECHANICAL DATA
Plastic DIP-8 MECHANICAL DATA
mm. DIM. MIN. A a1 B B1 b b1 D E e e3 e4 F I L Z 0.44 3.3 1.6 0.017 8.8 2.54 7.62 7.62 7.1 4.8 0.130 0.063 0.38 0.7 1.39 0.91 0.5 0.5 9.8 0.346 0.100 0.300 0.300 0.280 0.189 0.015 1.65 1.04 TYP 3.3 0.028 0.055 0.036 0.020 0.020 0.386 0.065 0.041 MAX. MIN. TYP. 0.130 MAX. inch
P001F
7/9
LM2903
PACKAGE MECHANICAL DATA
SO-8 MECHANICAL DATA
DIM. A A1 A2 B C D E e H h L k ddd 0.1 5.80 0.25 0.40 mm. MIN. 1.35 0.10 1.10 0.33 0.19 4.80 3.80 1.27 6.20 0.50 1.27 8 (max.) 0.04 0.228 0.010 0.016 TYP MAX. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 MIN. 0.053 0.04 0.043 0.013 0.007 0.189 0.150 0.050 0.244 0.020 0.050 inch TYP. MAX. 0.069 0.010 0.065 0.020 0.010 0.197 0.157
0016023/C
8/9
LM2903
PACKAGE MECHANICAL DATA TSSOP8 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b c D E E1 e K L L1 0 0.45 0.60 1 0.05 0.80 0.19 0.09 2.90 6.20 4.30 3.00 6.40 4.40 0.65 8 0.75 0 0.018 0.024 0.039 1.00 TYP MAX. 1.2 0.15 1.05 0.30 0.20 3.10 6.60 4.50 0.002 0.031 0.007 0.004 0.114 0.244 0.169 0.118 0.252 0.173 0.0256 8 0.030 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.008 0.122 0.260 0.177 inch
0079397/D
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2003 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom http://www.st.com
9/9

▲Up To Search▲

Price & Availability of LM2903D

	To Download LM2903D Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .