Low Power Low Offset Voltage Dual Comparators - Globaltech ...

Low Power Low Offset Voltage Dual Comparators Product Description

Features

The GS393 consists of two independent precision voltage 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. The GS393 was designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, the GS393 will directly interface with MOS logic where their low power drain is a distinct advantage over standard comparators.

        

Block Diagram

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Wide supply Voltage range: 2.0V to 32V. Low supply current drain independent of supply voltage. Low input biasing current: 25 nA typ. Low input offset current: 5 nA typ. Low input offset voltage: 3 mV typ. Input common-mode voltage range includes GND. Differential input voltage range equal to the power supply voltage Low output saturation voltage. Output voltage compatible with TTL, MOS and CMOS logic.

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Packages & Pin Assignments

Output A Inverting Input A

VCC

8

1

7

2 A

Output B

B Inverting

Non-Inverting Input A

3

6 Input B

GND

4

5 Non-Inverting Input B

Device

Package

GS393S

SOP-8

GS393P

DIP-8

Ordering & Marking Information GS P/N Package Code

GS Brand Name Part Number

GS393 P

GS 393 P F

F YWL G

Package Code Lead Free Date Code

Pb Free Code Ordering

GS Code

Marking

Absolute Maximum Ratings Parameter Supply Voltage Differential Input Voltage Input Voltage Input Current

Symbol

Value

Unit

VCC VIDR VIN IIN

36 36 -0.3V to +36 20

V V V mA

POWER DISSIPATION (Note 1) Molded DIP PD 780 mW Small Outline Package PD 510 mW Output Short-Circuit to GND IOS Continuous Operating Temperature Range TA 0 to 70 C Storage temperature Range TSTG -65 to 150 C DIP-8 125 Junction to Ambient θ JA C/W Thermo Resistance SOP-8 185 DIP-8 42 Junction to Case θ JC C/W Thermo Resistance SOP-8 22 ESD Rating (HBM) ESD 2K V Note 1: For operating at high temperatures, the GS393 must be derated based on a 125C maximum junction temperature and a thermal resistance of 170C/W which applies for the device soldered in a PCB, operating in a still air ambient. The low bias dissipation and the “ON-OFF” characteristic of the outputs keeps the chip dissipation very small (PD≦100mW), provided the output transistors are allowed to saturate.

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Electrical Characteristics at specified free-air temperature, VCC=5V (unless otherwise noted)

Parameter

Symbol

*Test conditions

Input offset voltage

VIO

VCC = 5 V to 30V, VIC = VICR min, Vo=1.4 V

Input offset current

lIO

Vo=1.4 V

Input bias current

IIB

Vo=1.4 V

VICR

-

**Common-mode input voltage range Large-signal differential voltage amplification High-level output current Low-level output voltage Low-level output current

AVD lOH

25 ℃

IOL = 4 mA, VID=-1V

lOL

VOL= 1.5V, VID=-1V

Typ

Max

2

5

Full range

VCC = 15 V, Vo=1.4V to 11.4 V, RL  15 k to VCC VOH=5 V, VID=1V, VOH= 30V, VID=1V

VOL

Min

9

25 ℃ Full range 25 ℃ Full range 25 ℃ Full range

0 to VCC - 1.5 0 to VCC - 2.0

25 ℃

50

5 -25

25 ℃ Full range 25 ℃ Full range 25 ℃

50 150 -250 -400

Unit mV nA nA V

200 0.1 150

V/mV 50 1 400 700

6

nA µA mV mA

VCC = 5V 0.8 1 25 ℃ mA VCC = 30V Full range 2.5 * Full range (MIN to MAX), for the GS393 is 0 ℃ to 70 ℃. All characteristics are measured with zero common-mode input voltage unless otherwise specified. ** The voltage at either input or common-mode 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. Supply current

ICC

RL = 

Switching Characteristics VCC=5V, TA=25 °C

Parameter Response time

Test conditions RL connected to 5V through 5.1 k, CL=15pF* (See Note 1)

Typ

100-mV input step with 5-mV overdrive

1.3

TTL-level input step

0.3

Unit µs

* CL includes probe and jig capacitance. Note 1: The response time specified is the interval between the input step function and the instant when the output crosses 1.4V.

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Typical Performance Characteristics Supply Current

80

TA=-55°C

IN - Input Current (nADC)

+

I -Supply Current (mA)

1.0

Input Current

TA=0°C

0.8 0.6

TA=25°C TA=+70°C

0.4

TA=+125°C

0.2

RL=∞ 0

10

20

30

60 TA=-55°C 40

TA=0°C

20

TA=+125°C

0

40

10

+

30

40

V - Supply Voltage (VDC)

Response Time for Various Input Overdrives–Positive Transition

Response Time for Various Input Overdrives–Negative Transition

6.0 5.0 4.0 3.0 2.0 1.0

6.0 5.0 4.0 3.0 2.0 1.0

Output Voltage Vo(V)

Input Over Drive =100 mV 5mV

20mV +5V DC

0

V IN

-

VO UT

0 -50 -100

+

TA=25°C

0

0.5

1.0

1.5

5.0mV= Input Over Drive +5V DC

20mV V IN

VO UT

+

100mV

0 -50 -100

TA=+25°C 0

2.0

0.5

Output Saturation Voltage

10 Out of Saturation VO – Saturation Voltage(VDC)

1.0

1.5

TIME(μsec)

TIME(μsec)

1.0 TA=+125°C 0.1

TA=-55°C TA=+25°C

0.01

0.001 0.01

0.1

1.0

10

IO - Output Sink Current (mA)

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51K

-

0

51K

Input Voltage VIN(mV)

Output Voltage Vo(V)

20

+

V -Supply Voltage (VDC)

Input Voltage VIN(mV)

TA=+25°C TA=+70°C

4

100

2.0


Typical Application (VCC=5V) The GS393 dual comparators feature high gain, wide bandwidth characteristic. This gives the device oscillation tendencies if the outputs are capacitively coupled to the inputs via stray capacitance. This oscillation manifests itself during output transitions (VOL to VOH). To alleviate this situation, input resistors＜10kΩ should be used. The addition of positive feedback (＜10mV) is also recommended. It is good design practice to ground all unused pins. Differential input voltages may be larger than supply voltage without damaging the comparator’s input. Voltage is more negative than -0.3V should not be used.

Basic Comparator

Driving CMOS

VCC=5V

V

100k

3.0k

+VIN

1/2 GS393

GS393

VO

CD40XX

+VREF

Driving TTL

Square-Wave Oscillator

VCC=5v

VCC 4.3k 100k

VCC

75pF

10k

0

SN74LSxx

1 100kHz 1/2 GS393

VOUT

GS393

100k

100k

100k

SN74LSxx

Pulse Generator

Crystal Controlled Oscillator VCC

VCC

15k

200k R1=1M

100k

D1*

2.0k

*For large ratios of R1 / R2, D1 can be omitted

R2=100k

1N914

D2

80pF

0.1uF

1/2 GS393

1/2 GS393

VOUT 1M

1M

+15V

CRYSTAL 1M

6 s t0 t1

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20k

60 s t2

5

1 - 100 kHz

VOUT


Typical Application (Continue) Two-Decade High-Frequency VCO

+Vcc 700k

500pF

100k

3.0k

5.1k

0.1uF

FREQUENCY CONTROL VOLTAGE INPUT

3k

1/2 GS393

10

VC

Vcc

1

0.01uF

1/2 GS393

OUTPUT1

2Vcc

20k 20k 50k 1

OUTPUT2

2Vcc

1/2 GS393

Non-Inverting Comparator with Hysteresis

Inverting Comparator with Hysteresis Vcc

Vcc

+VREF

+VIN

Vo

1/2 GS393

1M

Vcc

VO

1/2 GS393

10k

3k

+VIN

3k

1M

10M 1M

Output Strobing

And Gate

Vcc VCC

VCC 0

39k

"1"

"0"

6.2k

3k

+0.375V

Vo

1/2 GS393

1k 1/2 GS393

100k A

Q

STROBE INPUT

100k B

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1k 100k

Q or Logic Gate without Pull-Up resistor

C

6

f


Typical Application (Continue) OR Gate

Large Fan-in AND Gate VCC

All diodes 1N914

VCC

VCC

VCC 0 "0"

200k

"1"

10k

0

3k

"0"

+0.075V f

1/2 GS393

100k

D3

C

A 100k B

3k

D4

D

1k

100k

"1"

D2

B

1k 100k

1/2 GS393

D1

A

C

VO

100k

Comparing Input Voltages of Opposite Polarity

Limit Comparator Vcc(12V)

2Rs

+VREF HI

Vcc

10k 2N2222

1/2 GS393

+VIN

Rs LAMP 12 ESB

+VIN

100k

-VIN

1/2 GS393

2N2222

1/2 GS393

2Rs

+VREF LOW

5.1k

100k

Zero Crossing Detector (Single Power Supply)

ORing the Outputs Vcc 3.0k

100k

100k

5.1k

VIN

1/2 GS393

5.1k

Vo

5.1k

1/2 GS393

1N914

Vo

1/2 GS393

20M

10k

One-Shot Multi-vibrator

Bi-Stable Multi-vibrator

Vcc

1M

100pF

100k

10k

0

15k 51k

+

Vo t0

1/2 GS393

1M

1N914

0.001uF

1ms PW t0

1M

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S

100k

R

100k

Vo

V+ 0 t1

1/2 GS393

S

R

1N914

7

+15V


Typical Application (Continue) One-Shot Multi-vibrator with Input Lock Out

Zero Crossing Detector Vcc

1M

10M

100k +VIN

Vcc +

1M 560k

15k

1/2 GS393

100pF

100k

5.1k

Vo

+

1/2 GS393

VIN

1/2 GS393

10M

240k

62k

Vcc -

Comparator With a Negative Reference Vcc +

5.1k +

VIN

Vo

1/2 GS393

-5V Vcc -

Time Delay Generator Vcc

R1

R4

R3

R11

R14

R8 Vo3 1/2 GS393

Vcc R2 R5

R12

R15

R9

1/2 GS393

Vo2

C1

1/2 GS393

Vcc

R6

R13

R16

R10 Vo1 1/2 GS393

R7

R1=10k，R2=10k，R3=15k，R4=200k，R5=51k，R6=51k，R7=51k，R8=10k，R9=10k R10=10k，R11=10M，R12=10M，R13=10M，R14=3k，R15=3k，R16=3k，C1=0.001uF

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Vo


Split-Supply Applications MOS CLOCK DRIVER +15V

R1 R2

R5

R6

R8

R10

R11

R3 A

1/2 GS393 MH0025

R7

1/2 GS393

B

R4

1/2 GS393

C

R9

-15V

R1=51k，R2=51k，R3=10k，R4=5.1k，R5=2k，R6=3.9k R7=8.2k，R8=2k，R9=6.8k，R10=2.4k，R11=2.4k C=50pF

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Package Dimension

SOP-8 PLASTIC PACKAGE D

θ1 E/2

E1/2 E1

θ2

R

E

θ1

PIN 1 MARKING e

R1

b

θ

GAUGE PLANE L2

h c

A A2 A1

Dimensions SYMBOL A A1 A2 b b1 c D E E1 e L L1 L2 R R1 h θ θ1 θ2

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Millimeters

Inches

MIN

MAX

MIN

MAX

1.35 0.10 1.25 0.31 0.28 0.17

1.75 0.25 1.65 0.51 0.48 0.25

.053 .004 .049 .012 .011 .007

.069 .010 .065 .020 .019 .010

4.90 (TYP) 6.00 (TYP) 3.90 (TYP) 1.27 (TYP) 0.40

.193 (TYP) .236 (TYP) .154 (TYP) .050 (TYP) 1.27

.016

1.04 (TYP) 0.25 (TYP) 0.07 0.07 0.25 0° 5° 0°

.050 .041 (TYP) .010 (TYP)

0.50 8° 15° -

10

.003 .003 .010 0° 5° 0°

.020 8° 15° -


DIP-8 PLASTIC PACKAGE E G

1/2 e

PIN 1 MARKING

GAUGE PLANE

E1

c

b2 ec D

E

A2

A1 A

BASE PLANE SEATING PLANE

L D1

eA

b

1/2 LEAD 4 PLACES

e

eB

b3

Dimensions SYMBOL A A1 A2 b b2 b3 c D D1 E E1 e eA eB eC L G

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Millimeters

Inches

MIN

MAX

MIN

MAX

0.38 2.92 0.36 1.14 0.76 0.20 9.02 0.13 7.62 6.10

5.33 4.95 0.56 1.78 1.14 0.36 10.16 8.26 7.11

.015 .115 .014 .045 .030 .008 .355 .005 .300 .240

.210 .195 .022 .070 .045 .014 .400 .325 .280

2.54 (TYP) 7.62 (TYP) 0.00 2.92

.100 (TYP) .300 (TYP) 10.92 1.52 3.81

0.38 (TYP)

.000 .115

.430 .060 .150 .015 (TYP)

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NOTICE Information

furnished is believed to be accurate and reliable. However Globaltech Semiconductor 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 Globaltech Semiconductor. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information without express written approval of Globaltech Semiconductor. (Revise Date:2007/11/13 Version_1.0)

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