PHILIPS AU2903N

Philips Semiconductors Linear Products
Product specification
Low power dual voltage comparator
AU2903
DESCRIPTION
PIN CONFIGURATION
The AU2903 consists of two independent precision voltage
comparators with an offset voltage specification as low as 2.0mV
max. for two comparators which were designed specifically to
operate from a single power supply over a wide range of voltages.
Operation from split power supplies is also possible and the low
power supply current drain is independent of the magnitude of the
power supply voltage. 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.
D and N Packages
OUTPUT A
1
8
V+
INVERTING INPUT A
2
7
OUTPUT B
NON–INVERTING INPUT A
3
6
INVERTING INPUT B
GND
4
5
NON–INVERTING INPUT B
A
FEATURES
B
TOP VIEW
• Wide single supply voltage range 2.0VDC to 36VDC or dual
supplies ±1.0VDC, to ±18VDC
• Very low supply current drain (0.8mA) independent of supply
EQUIVALENT CIRCUIT
voltage (2.0mW/comparator at 5.0VDC)
• Low input biasing current 25nA
• Low input offset current ±5nA and offset voltage ±2mV
• Input common-mode voltage range includes ground
• Differential input voltage range equal to the power supply voltage
• Low output 250mV at 4mA saturation voltage
• Output voltage compatible with TTL, DTL, ECL, MOS and CMOS
V+
3.5µA
Q2
+ INPUT
100µA
3.5µA
100µA
Q3
Q1
Q4
logic systems
OUTPUT
– INPUT
Q8
Q7
APPLICATIONS
Q5
• A/D converters
• Wide range VCO
• MOS clock generator
• High voltage logic gate
• Multivibrators
Q6
(1 Comparator Only)
ORDERING INFORMATION
TEMPERATURE RANGE
ORDER CODE
DWG #
8-Pin Plastic Small Outline (SO) Package
DESCRIPTION
-40°C to +125°C
AU2903D
0174C
8-Pin Plastic Dual In-Line Package (DIP)
-40°C to +125°C
AU2903N
0404B
August 31, 1994
300
853-1636 13721
Philips Semiconductors Linear Products
Product specification
Low power dual voltage comparator
AU2903
ABSOLUTE MAXIMUM RATINGS
SYMBOL
VCC
PARAMETER
RATING
UNIT
36 or ±18
VDC
36
VDC
-0.3 to +36
VDC
N package
1160
mW
D package
780
mW
Supply voltage
Differential input voltage
VIN
Input voltage
PDMAX
Maximum power dissipation,
TA=25°C (still-air)3
Output short-circuit to
ground1
IIN
Input current (VIN<-0.3VDC)2
TA
Operating temperature range
Continuous
AU2903
TSTG
Storage temperature range
TSOLD
Lead soldering temperature (10sec max)
50
mA
-40 to +125
°C
-65 to +150
°C
300
°C
NOTES:
1. Short circuits from the output to V+ can cause excessive heating and eventual destruction. The maximum output current is approximately
20mA independent of the magnitude of V+.
2. This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the
input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral
NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the comparators to go to the V+ voltage
level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states
will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3VDC.
3. Derate above 25°C, at the following rates:
N package at 9.3mW/°C
D package at 6.2mW/°C
August 31, 1994
301
Philips Semiconductors Linear Products
Product specification
Low power dual voltage comparator
AU2903
DC AND AC ELECTRICAL CHARACTERISTICS
V+=5VDC, AU2903; -40°C, TA ≤ +125°C, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
VOS
Input offset voltage2
TA = 25°C
Over temp.
VCM
Input common-mode voltage
range3, 6
TA = 25°C
Over temp.
VIDR
Differential input voltage1
AU2903
Min
Max
±2.0
±9
±7.0
±15
mV
V+-1.5
V+-2.0
V
V+
V
0
0
Keep all VINs ≥ 0VDC (or V- if need)
IBIAS
Input bias current4
IIN(+) or IIN(-) with output
in linear range
TA=25°C
Over temp.
IOS
Input offset current
IIN(+) - IIN(-)
TA = 25°C
Over temp.
IOL
Output sink current
VIN(-) ≥ 1VDC, VIN(+) = 0,
V0 ≤ 1.5VDC
TA = 25°C
IOH
Output leakage current
VIN(+) ≥ 1VDC, VIN(-) = 0
V0 = 5VDC, TA = 25°C
6.0
UNIT
Typ
25
200
250
500
±5
±50
±50
±200
16
nA
nA
mA
0.1
V0 = 30VDC, over temp.
nA
nA
1.0
µA
mA
RL = ∞ on both
comparators.
ICC
AV
Supply current
Voltage gain
TA = 25°C
0.8
1
V+ = 30V, over temp.
1
2.5
RL ≥ 15kΩ, V+ = 15VDC,
TA = 25°C
25
100
V/mV
VIN(-) ≥ 1VDC, VIN(+) = 0,
VOL
Saturation voltage
ISINK ≤ 4mA
TA = 25°C
400
Over temp.
tLSR
Large-signal
response time
VIN = TTL logic swing,
VREF = 1.4VDC
VRL = 5VDC, RL = 5.1kΩ,
TA = 25°C
tR
Response time5
VRL = 5VDC, RL = 5.1kΩ
TA = 25°C
400
mV
700
300
ns
1.3
µs
NOTES:
1. Positive excursions of input voltage may exceed the power supply level by 17V. 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 -0.3VDC (VDC
below the magnitude of the negative power supply, if used).
2. At output switch point, VO ≈ 1.4VDC, RS = 0Ω with V+ from 5VDC to 30VDC and over the full input common-mode range (0VDC to
V+-1.5VDC).
3. The input common-mode voltage or 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 V+-1.5V, but either or both inputs can go to 30VDC without damage.
4. 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 change exists on the reference or input lines.
5. The response time specified is for a 100mV input step with a 5mV overdrive.
6. For input signals that exceed VCC, only the over-driven comparator is affected. With a 5V supply, VIN should be limited to 25V maximum,
and a limiting resistor should be used on all inputs that might exceed the positive supply.
August 31, 1994
302
Philips Semiconductors Linear Products
Product specification
Low power dual voltage comparator
AU2903
TYPICAL APPLICATIONS
V+
V+
700kΩ
100kΩ
–
+ VC
FREQUENCY
CONTROL
VOLTAGE
INPUT
30kΩ
5.1kΩ
500pF
3.0kΩ
–
10
+
OUTPUT 1
.01µF
0.1µF
+
V – /2
20kΩ
OUTPUT 2
20kΩ
50kΩ
+
V + /2
–
NOTES:
V+ = 30VDC
+ 250m VDC < VC = 50VDC
700H < fO = 100kHz
Two–Decade High–Frequency VCO
+V
+ V (12V
2RS
REF HI
+V
IN
DC)
10KΩ
+
RS
LAMP
–
+
+ 5V
2RS
DC
2N2222
–
+VREF LOW
360
Limit Comparator
+
+V
REF 4
–
5VDC
100k
100
+ 5V
DC
360
+
+VREF
1.4VDC
REF 3 –
+ 5V
DC
–12VDC
TTL–to–MOS Logic Converter
360
+V
10KΩ
100k
100
VO
V+
+
REF 2 –
200kΩ
100k
100
+ 5V
100kΩ
V+
0.1µF
+
–
VO
0
+
REF 1 –
100
200kΩ
100k
Visible Voltage Indicator
CRYSTAL
1 – 100kHz
Crystal–Controlled Oscillator
NOTE:
Input of unused comparators should be grounded.
August 31, 1994
2.0kΩ
DC
360
+V
-12V
–
+
+V
o
VO
303
Philips Semiconductors Linear Products
Product specification
Low power dual voltage comparator
AU2903
TYPICAL PERFORMANCE CHARACTERISTICS
Input Current
Output Saturation Voltage
10
60
TA = -55oC
TA = 0oC
40
20
TA = +125oC
10
20
+70oC
30
TA = +125oC
0.1
TA = -55oC
0.01
TA = +25o
0.1
1.0
10
100
v + — SUPPLY VOLTAGE — VDC
IO — OUTPUT SINK CURRENT (mA)
Response Time for Various
Input Overdrives —
Negative Transition
Response Time for Various
Input Overdrives —
Positive Transition
5mV = INPUT OVERDRIVE
+ 5V
5
4
20mV
3
VIN
2
–
+
100mV
5.1K
VOUT
0
OVERDRIVE
–50
0.5
1.0
1.5
INPUT OVERDRIVE = 100mV
5
4
5mV
3
2
20mV
+ 5V
0
0
TA = 25oC
–50
–100
TA = 25oC
0
6
1
0
–100
VIN
5.1K
–
+
VOUT
OVERDRIVE
0
2.0
0.5
1.0
1.5
TIME — µ sec
TIME — µ sec
August 31, 1994
1.0
0.001
0.01
40
6
1
OUT OF
SATURATION
OUTPUT VOLTAGE
VO — mV
OUTPUT VOLTAGE
VO — mV
TA = +25oC
TA =
0
INPUT VOLTAGE
VIN — mV
V O— SATURATION VOLTAGE (V DC)
VIN (CM) = 0 VDC
RIN (CM) = 10kΩ
INPUT VOLTAGE
VIN — mV
I N — INPUT CURRENT — nADC
80
304
2.0