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ADVANCED LINEAR DEVICES, INC.
ALD4301A/ALD4301
QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN DRIVER
GENERAL DESCRIPTION The ALD4301A/ALD4301 is a monolithic high performance quad voltage comparator built with advanced silicon gate CMOS technology. It features very high typical input impedance of 10 12 ; low input bias current of 10pA; fast response time of 300ns; very low power dissipation of 55A per comparator; high output drive and single +5V or dual 5V power supply operation. The input voltage range includes ground, making this comparator ideal for low level signal detection with high source impedance. The outputs are open-drain configuration, allowing maximum application flexibility. The outputs can be connected to a higher external voltage than V + and used in a wired-OR connection with other open drain circuits such as ALD2301/ALD2303. They can also be used with push-pull output types such as ALD2302/ALD4302 voltage comparators simultaneously with open drain comparators using a common V+. The ALD4301A/ ALD4301 is ideal for a great variety of voltage comparator applications, especially detection circuits requiring very low input currents and low standby power, yet retaining high output current capability. FEATURES * * * * * * * * * * * * * Fanout of 30 LS TTL loads Low supply current of 55A/comparator typical Pinout/Functional equivalent to LM393 types Extremely low input bias currents -- 10pA typical Virtually eliminates source impedance effects Low operating supply voltage of 3V to 12V Single +5V and dual supply 5V operation High speed for both large signal and low level signals -- 300ns typical for TTL inputs CMOS, NMOS and TTL compatible Wired-OR open drain outputs High output sinking current -- 60mA typical Low supply current spikes High gain
APPLICATIONS * High source impedance voltage comparison circuits * Dual/Quad limit window comparator * Power supply voltage monitor * Photo-detector sensor circuit * Relay or LED driver * Oscillators * Battery operated instruments * Remote signal detection PIN CONFIGURATION
02 01 V+ -IN 1 +IN 1 -IN 2 +IN 2
1
14
03 04 GND +IN 4 -IN 4 +IN 3 -IN 3
2
13
3 4
12
11
5
10
6
9
7
8
DB, PB, SB PACKAGE
BLOCK DIAGRAM
V+ INVERTING INPUT - IN 1 (4) NONINVERTING INPUT + IN 1 (5) INVERTING INPUT - IN 2 (6) NONINVERTING INPUT + IN 2 (7) INVERTING INPUT - IN 3 (8) (3)
ORDERING INFORMATION
Operating Temperature Range * -55C to +125C 0C to +70C 0C to +70C 14-Pin CERDIP Package 14-Pin Small Outline Package (SOIC) 14-Pin Plastic Dip Package
(2) OUT 1
+ (1) OUT 2
+ (14) OUT 3
ALD 4301ADB ALD 4301DB
ALD4301ASB ALD4301SB
ALD4301APB ALD4301PB
NONINVERTING INPUT + IN 3 (9) INVERTING INPUT - IN 4 (10) NONINVERTING INPUT + IN 4 (11)
+ (13) OUT 4
+
* Contact factory for industrial temperature range
(12)
(c) 2005 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V+ Differential input voltage range Power dissipation Operating temperature range PB, SB package DB package Storage temperature range Lead temperature, 10 seconds 13.2V -0.3V to V+ +0.3V 600 mW 0C to +70C -55C to +125C -65C to +150C +260C
OPERATING ELECTRICAL CHARACTERISTICS TA = 25C V+= +5V unless otherwise specified
4301A Parameter Voltage Supply Supply Current Voltage Gain Input Offset Voltage Input Offset Current 1 Input Bias Current 1 Common Mode Input Voltage Range 2 Low Level Output Voltage Low Level Output Current High Level Leakage Current Response Time 2 Symbol V+ Min 3 1.5 220 Typ Max 12 6 350 Min 3 1.5 220 4301 Typ Max 12 6 350 Unit V V A Test Conditions Single supply Dual supplies No load
IS
AVD
50
150
50
150
V/mV
RLOAD 15K RLOAD 1.5K
VOS
5
10
mV
IOS
0.1
30
0.1
30
pA
IB
0.1
30
0.1
30
pA
VICR
-0.3
V+-1.5
-0.3
V+ -1.5
V
VOL
0.15
0.4
0.15
0.4
V
I SINK =12mA VINPUT =1V Differential
IOL
24
60
24
60
mA
VOL =1.0V
ILH
0.1
20
0.1
20
nA
VOH = 5.0 V
tRP
650
650
ns
RL =5.1K CL = 15pF 100mV Input Step/5mV Overdrive RL = 5.1K CL = 15pF TTL- Level Input Step
300
300
ns
Notes:
1 2
Consists of junction leakage currents Sample tested parameters
ALD4301A/ALD4301
Advanced Linear Devices
TYPICAL PERFORMANCE CHARACTERISTICS
SATURATION VOL TAGE vs.TEMPERATURE
1.4
TRANSFER FUNCTION
SATURATION VOLTAGE (V)
1.0 0.8 0.6 0.4 0.2 0 -55 -25 0 25 50 75 100 125
OUTPUT VOLTAGE (V)
1.2
VS = 2.5V ISINK = 50mA
+6.0
TA = 25C VS = 6V RL = 5.1K
0.0
-6.0 -2.5 0.0 DIFFERENTIAL INPUT VOLTAGE (mV) +2.5
TEM PERATURE (C)
COMMON - MODE VOLTAGE LIMITS (V)
COMMON - MODE VOLTAGE REFERRED TO SUPPL VOLTAGE Y
0.5 V+ -0.5 -1.0 0.5 V-0.5 -55 -25 0 25 50 75 100 125 VS = 2.5V
RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES
INPUT VOLTAGE (mV)
0
V+
100
VIN
+2.5
+ 0V V-
5.1K
VOUT
TA = 25C VS = 2.5V
5mV 10mV 2mV
OUTPUT VOLTAGE (V)
50mV 0.0 20mV -2.5 0.0 0.2 0.4 0.6 0.8
1.0
1.2
1.4
TEMPERATURE (C)
TIM E (s)
SATURATION VOL TAGE vs. SINK CURRENT
INPUT VOLTAGE (mV)
1.5
RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES
100 0
VIN V+
OUTPUT SATURATION VOLTAGE (V)
VS = 2.5V 1.2 0.9 125C 0.6 0.3 0.0 0 15 30 45 60 OUTPUT SINK CURRENT (mA) 75 85C
TA = 25C VS = 2.5V
5.1K
+2.5
+ 0V V-
VOUT
2mV 5mV 10mV 20mV 50mV 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
25C -25C -55C
OUTPUT VOLTAGE (V)
0.0 -2.5
TIM E (s)
ALD4301A/ALD4301
Advanced Linear Devices
TYPICAL PERFORMANCE CHARACTERISTICS
TOTAL SUPPLY CURRENT vs. TOTAL SUPPLY VOLTAGE
V+
200
SUPPLY CURRENT (A)
SUPPLY CURRENT vs. TEMPERATURE
SUPPLY CURRENT ( A)
160 140 120 100 80 2.0
+
TA = 25C RL =
180 160 140 120 100 80 60
VS = 2.5V No Load All comparators
4.0
6.0
8.0
10.0
12.0
-55
-25
0
25
50
75
100
125
SUPPLY VOLTAGE (V)
TEMPERATURE (C)
INPUT OFFSET VOLTAGE vs. TEMPERATURE
3.0
OFFSET VOLTAGE (mV)
2.8 2.6 2.4 2.2 2.0 1.8 -55 -25 0 25 50 75 100 125
TEMPERATURE (C) VCM = 0V VS = 2.5V
TYPICAL APPLICATIONS
QUAD LIMIT WINDOW COMPARATOR QUAD LIMIT PHOTO-DETECTOR MONITOR
VExternal V+
VOLTAGE COMPARATOR WITH COMPLEMENTARY OUTPUTS
V+ 1/2 ALD4301 VREF(HIGH) RLOAD
BUZZER 1/2 ALD4301
V+
+ -
+
LED
Q 1/2 ALD4301
VLIMIT2
+
VREF VIN
VOUT
VLIMIT 1
VIN VREF(LOW)
+
LIGHT
+ -
Q 1/2 ALD4301
+
1/2 ALD4301
PHOTODETECTOR
1/2 ALD4301
MINIMUM RLOAD = 1.5K OUTPUT HIGH FOR VIN < VREF(HIGH) AND VIN > VREF(LOW)
LED turns on as photo-detector voltage reaches V LIMIT1. Both LED and horn turns on as photo-detector voltage reaches VLIMIT2.
V EXTERNAL = +12V V+ = +5V.
ALD4301A/ALD4301
Advanced Linear Devices
TYPICAL APPLICATIONS
ZERO CROSSING DETECTOR DOUBLE DUAL LIMIT WINDOW COMPARATOR
ALD4301
+3V
+12V +12V VH2
+12V
50K VIN VOUT
+
-3V 1/4 ALD4301
50K
+
VH1
+
+12V
MULTIPLE RELAY DRIVE
VIN 47K +12V
+5V VREF VIN
+5V
VL1
+
+
VL2 50K
+
1/4 ALD4301
ALD4301
VL1 and VH1 first limit window send warning VL2 and VH2 second limit window execute system cutoff VOLTAGE LEVEL TRANSLATOR
V+ = +10V VREF VIN 50K VOUT
+
1/4 ALD4301
VREF VREF
= 1.4V for TTL input = V+ 2 for CMOS input
Output VOUT swings from rail-to-rail
ALD4301A/ALD4301 Advanced Linear Devices
TYPICAL APPLICATIONS
PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER
+12V +12V 10K V1 VIN 40K +12V V2 10K R N - Channel VN 01 Power MOSFET R +12V P- Channel VP 02 Power MOSFET
+
2A Source 2A Sink
+
R 50 K This circuit eliminates crossover current in the complementary power transistors. The outputs can be used to source and sink different loads or tied together to provide push-pull drive of the same load.
1/2 ALD4301
TIME DELAY GENERATOR
V+ RF1 1/4 ALD4301 V+ VREF VIN RT RF2 RELAY 3 1/4 ALD4301
+
1/4 ALD4301 RELAY 2 CT RF3
+ +
1/4 ALD4301
RELAY 1
+
RF4 RELAY 1 turns off followed by RELAY 2 and then RELAY 3 with fixed sequence and time delays selectrd by ratios RF1, RF2 , RF3 and RF4.
Design & Operating Notes: 1. In order to minimize stray oscillation, all unused inputs must be tied to ground. 2. The input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically less than 1 pA at room temperature. These currents are a function of ambient temperature, and would have to be considered in applications where very high source impedance or high accuracy are involved. 3. The high output sinking current of 60mA for each output offers flexibility in many applications, as a separate buffer or driver would not be necessary to drive the intended load. However, as the circuit normally operates close to ambient temperature due to its very low power consumption, thermal effects caused by large output current transients must be considered in certain applications.
ALD4301A/ALD4301
Advanced Linear Devices

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