Philips Semiconductors Linear Products Product specification Voltage comparator NE527 DESCRIPTION PIN CONFIGURATIONS 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. D, N Packages V1 + 1 14 V2 + NC 2 13 STROBE A INPUT A 3 12 NC INPUT B 4 11 OUTPUT A NC 5 10 GND 6 9 OUTPUT B NC 7 8 STROBE B V1 – FEATURES • 15ns propagation delay • Complementary output gates • TTL or ECL compatible outputs • Wide common-mode and differential voltage range • Typical gain of 5000 TOP VIEW APPLICATIONS • A/D conversion • ECL-to-TTL interface • TTL-to-ECL interface • Memory sensing • Optical data coupling ORDERING INFORMATION DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG # 14-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C NE527N 0405B 14-Pin Small Outline (SO) Package 0 to +70°C NE527D 0175D EQUIVALENT SCHEMATIC V2 + STROBE A V1 + 20K 1.5K 1K 1K 750 750 4K 4K 1.5K OUTPUT A 20K 4K INPUT B INPUT A 55 1.5K 1.5K 55 250 500 6.13K GND 7.5K 7.5K V1 – 200 4K 300 300 100 200 250 OUTPUT B 500 STROBE B August 31, 1994 315 853-0906 13721 Philips Semiconductors Linear Products Product specification Voltage comparator NE527 ABSOLUTE MAXIMUM RATINGS RATING UNIT V1+ SYMBOL Positive supply voltage PARAMETER +15 V V1- Negative supply voltage -15 V V2+ Gate supply voltage +7 V VOUT Output voltage +7 V VIN Differential input voltage ±5 V VCM Input common mode voltage ±6 V PD Max power dissipation1 25°C ambient (still air) N package 1420 mW D package 1040 mW 0 to +70 °C -65 to +150 °C +300 °C TA Operating temperature range TSTG Storage temperature range TSOLD Lead soldering temperature (10sec max) NOTES: 1. Derate above 25°C, 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 – August 31, 1994 STROBE B 316 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 UNIT Input characteristics VOS IBIAS IOS VCM Input offset voltage @ 25°C 6 over temperature range 10 Input bias current @ 25°C 2 over temperature range 4 Input offset current @ 25°C over temperature range VIN=0V Common-mode voltage range -5 mV µA 0.75 µA 1 µA +5 V Gate characteristics Output Voltage VOUT “1” State V2+=4.75V, ISOURCE=-1mA “0” State V2+=4.75V, ISINK=10mA 2.7 3.3 V 0.5 V Strobe inputs ISC “0” Input current1 V2+=5.25V, VSTROBE=0.5V -2 mA “1” Input current @ 25°C1 V2+=5.25V, VSTROBE=2.7V 100 µA Over temperature range V2+=5.25V, VSTROBE=2.7V 200 µA “0” Input voltage V2+=4.75V 0.8 V “1” Input voltage V2+=4.75V 2.0 V2+=5.25V, VOUT=0V -18 Short-circuit output current V -70 mA Power supply requirements Supply voltage V1+ 5 10 V V1- -6 -10 V V2+ 4.75 5.25 V Supply current 5 V1+=10V, V1-=-10V V2+=5.25V I1+ Over temp. 5 mA I1- Over temp. 10 mA I2+ Over temp. 20 mA NOTES: 1. See Logic Function Table. AC ELECTRICAL CHARACTERISTICS TA=25°C, unless otherwise specified. (See AC test circuit) SYMBOL PARAMETER TEST CONDITIONS LIMITS Min UNIT Typ Max 16 26 ns 14 24 ns 2 5 ns Transient response propagation delay time tPLH tPHL Low-to-High VIN=±100mV step High-to-Low Delay between output A and B Strobe delay time tON Turn-on time 6 ns tOFF Turn-off time 6 ns August 31, 1994 317 Philips Semiconductors Linear Products Product specification Voltage comparator NE527 TYPICAL PERFORMANCE CHARACTERISTICS Input Currents vs Temperature Power Dissipation vs Supply Voltage Supply Currents vs Temperature 160 15 2.0 BIAS CURRENT 1.0 0 0.3 OFFSET CURRENT V2 + = 5.0V 13 7 I1 – 6 V1 – = 10V 5 4 I1 + 3 V1 + = 10V 2 0.1 0 –50 –25 0 25 50 –50 –25 75 100 125 TEMPERATURE — oC 0 5 T1 + 1 0 4 5 6 7 8 110 100 5 9 OUTPUT A 4 INPUT A 0 OVERDRIVE 0 OUTPUT A 3 5 10 SUPPLY VOLTAGE (V1 +, V1 –) — VOLTS 15 20 25 9 +5mV +10mV +15mV 0 +100 OVERDRIVE 0 INPUT B –100 0 30 5 TIME — ns 10 15 20 TIME — ns RESPONSE TIME TEST CIRCUIT (V1 +) +10 10µF + + .1 1K 500Ω (V2 +) +5 10µF .1 INPUT PROBE 1 13 OUTPUT PROBE 14 +5 5K R1 R2 51Ω 51Ω RL 11 3 INPUT CR1 4 +5 9 CL CR2 R3 6 8 1K (V1 –) –10 .1 NOTES: CR1 — CR4 = IN914 R1 selected for 15.1 divider R2, 3 selected for 100mV at Pin 4 August 31, 1994 Input PRR = 1MHz Pw = 50ns Tr = Tf = 2ns Amplitude = 3.00V +5 Output RL = 390Ω CL = 25pF (including stray capacitance 318 10 OVERDRIVE +50mV +25mV 2 1 –100 8 V1 + = 10V, V1 – = — 10V V2 + = 5.0V 5 OUTPUT B 0 10 7 Response Time for Various Input Overdrives 2 +100 6 SUPPLY VOLTAGE (V1 +, V1 –) — VOLTS 3 1 3 2 120 100 V1 + = 10V, V1 – = — 10V V2 + = 5.0V 5 T2 + 4 INPUT VOLTAGE — mV SUPPLY CURRENT — mA OUTPUT VOLTAGE — V TA = 25oC V2 + = 5.0V T1 – 75 130 Output Propagation Delays 8 6 50 140 TEMPERATURE — oC Supply Current vs Supply Voltage 7 25 V2 + = 5.0V TA = 25oC 150 OUTPUT VOLTAGE — V 0.2 14 INPUT VOLTAGE — mV 1.5 I2 + POWER DISSIPATION — mW 2.5 SUPPLY CURRENT — mA INOUR CURRENT —µ A 3.0 10 CR3 CR4 25 30 Philips Semiconductors Linear Products Product specification Voltage comparator NE527 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. 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 LOGIC FUNCTION VID (A+, B–) STROBE A STROBE B OUTPUT A OUTPUT B VID≤-VOS H X L H -VOS<VID<VOS H H Undefined Undefined VID≥VOS X H H L X L L H H COMMENT Read IIHA, IILB Read IILA, IIHB TYPICAL APPLICATIONS + 5V + 5V λ R2 R2 1 14 3 Q 1 529N 527N R1 TTL OUTPUTS 527N R2 9 – 6V Q 10 6 R1 R1 9 4 INPUT 10 6 Q 11 ECL Q 4 14 3 11 R1 – 10V Photodiode Detector ECL–to–TTL Interface + 5V VREF + 5V 3R1 1 1103 MOS RAM 14 3 TTL INPUT Q 2K 1 14 3 11 11 529N 527N 529N 527N Q 100Ω R1 100Ω R1 – 10V – 6V MOS Memory Sense AMP August 31, 1994 10 6 10 6 9 4 9 4 – 5.2V TTL–to–ECL Interface 319 2K