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Philips Semiconductors Linear Products
Product specification
Voltage comparator
NE527
DESCRIPTION
The NE527 is a high-speed analog voltage comparator which, for the first time, mates state-of-the-art Schottky diode technology with the conventional linear process. This allows simultaneous fabrication of high speed TTL gates with a precision linear amplifier on a single monolithic chip. The NE527 is similar in design to the Philips Semiconductors NE529 voltage comparator except that it incorporates an "Emitter-Follower" input stage for extremely low input currents. This opens the door to a whole new range of applications for analog voltage comparators.
PIN CONFIGURATIONS
D, N Packages
V1 + 1 14 13 12 11 10 9 8 V2 +
NC 2 INPUT A INPUT B
3 4
STROBE A NC OUTPUT A GND
OUTPUT B
NC 5
V1 - 6
FEATURES
* 15ns propagation delay * Complementary output gates * TTL or ECL compatible outputs * Wide common-mode and differential voltage range * Typical gain of 5000
NC 7
TOP VIEW
STROBE B
APPLICATIONS
* A/D conversion * ECL-to-TTL interface * TTL-to-ECL interface * Memory sensing * Optical data coupling
ORDERING INFORMATION
DESCRIPTION 14-Pin Plastic Dual In-Line Package (DIP) 14-Pin Small Outline (SO) Package TEMPERATURE RANGE 0 to +70C 0 to +70C ORDER CODE NE527N NE527D DWG # 0405B 0175D
EQUIVALENT SCHEMATIC
V1 + 20K 1K 1K STROBE A V2 +
4K
1.5K
55
1.5K
1.5K 750 750 20K
4K
OUTPUT A
4K INPUT A INPUT B 6.13K
1.5K
55
250
500
GND 7.5K 7.5K 4K OUTPUT B
V1
-
200
300
300
100
200
250
500
STROBE B
August 31, 1994
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853-0906 13721
Philips Semiconductors Linear Products
Product specification
Voltage comparator
NE527
ABSOLUTE MAXIMUM RATINGS
SYMBOL V1+ V1V2+ VOUT VIN VCM PD Positive supply voltage Negative supply voltage Gate supply voltage Output voltage Differential input voltage Input common mode voltage Max power dissipation1 25C ambient (still air) N package D package TA TSTG TSOLD Operating temperature range Storage temperature range Lead soldering temperature (10sec max) 1420 1040 0 to +70 -65 to +150 +300 mW mW C C C PARAMETER RATING +15 -15 +7 +7 5 6 UNIT V V V V V V
NOTES: 1. Derate above 25C, at the following rates: N package 11.4mW/C D package 8.3mW/C
BLOCK DIAGRAM
V1 + STROBE A V2 + OUTPUT A INPUT A INPUT B OUTPUT B V1 - STROBE B
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Philips Semiconductors Linear Products
Product specification
Voltage comparator
NE527
DC ELECTRICAL CHARACTERISTICS
V1+=10V, V1-=-10V, V2+=+5.0V, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS NE527 Min Typ Max 6 10 2 4 0.75 VIN=0V -5 1 +5 UNIT
Input characteristics
VOS IBIAS IOS VCM Input offset voltage @ 25C over temperature range Input bias current @ 25C over temperature range Input offset current @ 25C over temperature range Common-mode voltage range Output Voltage VOUT "1" State "0" State Strobe inputs "0" Input current1 "1" Input current @ 25C1 Over temperature range "0" Input voltage "1" Input voltage ISC Short-circuit output current Supply voltage V1+ V1V2+ Supply current I1+ I1I2+ NOTES: 1. See Logic Function Table. V1+=10V, V1-=-10V V2+=5.25V Over temp. Over temp. Over temp. 5 10 20 mA mA mA 5 -6 4.75 5 10 -10 5.25 V V V V2+=5.25V, VSTROBE=0.5V V2+=5.25V, VSTROBE=2.7V V2+=5.25V, VSTROBE=2.7V V2+=4.75V V2+=4.75V V2+=5.25V, VOUT=0V 2.0 -18 -70 -2 100 200 0.8 mA A A V V mA V2+=4.75V, ISOURCE=-1mA V2+=4.75V, ISINK=10mA 2.7 3.3 0.5 V V mV A A A V
Gate characteristics
Power supply requirements
AC ELECTRICAL CHARACTERISTICS
TA=25C, unless otherwise specified. (See AC test circuit) SYMBOL PARAMETER Transient response propagation delay time tPLH tPHL Low-to-High High-to-Low Delay between output A and B Strobe delay time tON tOFF Turn-on time Turn-off time 6 6 ns ns VIN=100mV step 16 14 2 26 24 5 ns ns ns TEST CONDITIONS LIMITS Min Typ Max UNIT
August 31, 1994
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Philips Semiconductors Linear Products
Product specification
Voltage comparator
NE527
TYPICAL PERFORMANCE CHARACTERISTICS
Input Currents vs Temperature
3.0 INOUR CURRENT -- A 2.5 SUPPLY CURRENT -- mA 2.0 1.5 1.0 0 BIAS CURRENT 15 14 13 7 6 5 4 3 2 -50 -25 0 I2 + V2 + = 5.0V I1 - V1 - = 10V I1 + V1 + = 10V POWER DISSIPATION -- mW
Supply Currents vs Temperature
160 150 140 130 120 110 100 5
Power Dissipation vs Supply Voltage
V2 + = 5.0V TA = 25oC
0.3 0.2 0.1 0 -50 -25 0 25 50 75 100 125 TEMPERATURE -- oC OFFSET CURRENT
25
50
75
100
6
7
8
9
10
TEMPERATURE -- oC
SUPPLY VOLTAGE (V1 +, V1 -) -- VOLTS
Supply Current vs Supply Voltage
8
OUTPUT VOLTAGE -- V
Output Propagation Delays
5 4 3 2 1 INPUT VOLTAGE -- mV 0 +100 0 -100 0 5 10 15 OVERDRIVE 20 25 30 INPUT A OUTPUT B INPUT VOLTAGE -- mV OUTPUT A OUTPUT VOLTAGE -- V V1 + = 10V, V1 - = -- 10V V2 + = 5.0V 5 4 3 2 1 0 +100 0 -100
Response Time for Various Input Overdrives
V1 + = 10V, V1 - = -- 10V V2 + = 5.0V OVERDRIVE
+5mV +10mV
7
SUPPLY CURRENT -- mA
6 5 4 3 2 1 0 5 6
T1 -
TA = 25oC V2 + = 5.0V
OUTPUT A
+50mV +25mV
T2 + T1 +
+15mV
OVERDRIVE INPUT B
7
8
9
10
0
5
10
15
20
25
30
SUPPLY VOLTAGE (V1 +, V1 -) -- VOLTS
TIME -- ns
TIME -- ns
RESPONSE TIME TEST CIRCUIT
(V1 +) +10 10F INPUT PROBE 500 1 + .1 1K 13 14 11 CR1 9 CL R3 6 8 1K (V1 -) -10 .1 10 CR3 CR4 CR2 .1 OUTPUT PROBE +5 + (V2 +) +5 10F
5K
R1 INPUT R2 51 51 +5 3 4 RL
+5
NOTES: CR1 -- CR4 = IN914 R1 selected for 15.1 divider R2, 3 selected for 100mV at Pin 4
Input PRR = 1MHz Pw = 50ns Tr = Tf = 2ns Amplitude = 3.00V
Output RL = 390 CL = 25pF (including stray capacitance
August 31, 1994
318
Philips Semiconductors Linear Products
Product specification
Voltage comparator
NE527
APPLICATIONS
One of the main features of the device is that supply voltages (V1+, V1-) need not be balanced, as in the following diagrams. For proper operation, however, negative supply (V1-) should always be at least 6V more than the ground terminal (Pin 6). Input common-mode
range should be limited to values of 2V less than the supply voltages (V1+ and V1-) up to a maximum of 5V as supply voltages are increased. It is also important to note that Output A is in phase with Input A and Output B is in phase with Input B.
LOGIC FUNCTION
VID (A+, B-) VID-VOS -VOSTYPICAL APPLICATIONS
R2 1 3 14 11 Q 3 + 5V R2 1 14 11 TTL OUTPUTS Q + 5V
527N 529N Q 4 6 R1 R1 - 6V 10 9 INPUT R1 ECL
R2 4 6 R1 - 10V
527N 9 10
Q
Photodiode Detector
ECL-to-TTL Interface
+ 5V VREF + 5V 3R1 1103 MOS RAM 1 3 14 11 Q TTL INPUT 3 1 14 11 2K 2K
529N 527N Q 4 6 100 100 - 6V 10 R1 R1 9 4 6
529N 527N 9 10
- 10V
- 5.2V
MOS Memory Sense AMP
TTL-to-ECL Interface
August 31, 1994
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