ST LM119, LM219, LM319 User Manual

LM119-LM219-LM319

High speed dual comparators

Features

■Two independent comparators

■Supply voltage: +5V to ±15V

■Typically 80ns response time at ±15V

■Minimum fan-out of 2 each side

■Maximum input current of 1µa over operating temperature range

■Inputs and outputs can be isolated from system ground

■High common-mode slew rate

Description

These products are precision high speed dual comparators designed to operate over a wide range of supply voltages down to a single 5V logic supply and ground. They feature low input currents and high gains.

The open collector of the output stage makes it compatible with TTL as well as capable of driving lamps and relays at currents up to 25mA.

Although designed primarily for applications requiring operation from digital logic supplies, the comparators are fully specified for power supplies up to ±15V.

They feature faster response than LM111 at the expense of higher current consumption. However, the high speed, wide operating voltage range and low package count make the LM119/219/319 much more versatile.

DIP14

(Plastic package)

SO-14

(Plastic micropackage)

Pin connections

(Top view)

N.C.

N.C.

Ground 1

Non-inverting input 1

Inverting input 1

V -

CC

Output 2

1	14	N.C.
2	13	N.C.
3	12	Output 1
4	11	V	+
			CC
5	10	Inverting input 2
6	9	Non-inverting input 2
7	8	Ground 2

January 2008

Rev 2

1/12

www.st.com

Schematic diagram	LM119-LM219-LM319

1 Schematic diagram

Figure 1. Circuit schematics (1/2 LM119)

		R1
		3.5kΩ								+
										VCC
				R7
		R3		3kΩ
				R6
		4kΩ
				3kΩ
									Q9
		R2
		4kΩ
			Q4
						Q8
		Q3
				Q7
			Q6						R12
									13kΩ
					c1		R11
					18μF
							13kΩ
Inverting
	-	Q2
Input
		R4	R5		R10
		3kΩ	3kΩ		470kΩ
Non-inverting				R8
	+	Q1		2kΩ
Input
			Q6
										Q15
					R9			Q10	Q13
										R15
					18kΩ
		Q22								300Ω
			R23	R22			R13		Q14	Output
			4kΩ	60Ω		R18	600Ω
				R20
						1.8kΩ
			Q21	3.6kΩ						Q16
						Q11			Q12
			Q20			R19				R16
		R25					R14
						250Ω				600Ω
							2kΩ
		600Ω
		R24		Q19
		250Ω
				R21						Q17
					Q18
				900Ω
										R17
										3Ω
			To other half						-	GND
									VCC
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LM119-LM219-LM319	Absolute maximum ratings and operating conditions

2 Absolute maximum ratings and operating conditions

Table 1.			Absolute maximum ratings (AMR)
Symbol			Parameter	Value	Unit
V	- V	-	Output to negative supply voltage	36	V
o	CC
	-		Negative supply voltage	-25	V
VCC
	+		Positive supply voltage	18	V
VCC
	Vid		Differential input voltage	±5	V
	Vi		Input voltage (1)	±15	V
			Output short-circuit to ground	Infinite
	Tj		Maximum junction temperature	150	°C
	Tstg		storage temperature range	-65 to +150	°C
			Thermal resistance junction to ambient (2) (3)
Rthja			DIP14	80	°C/W
			SO-14	105
			Thermal resistance junction to case (2) (3)
Rthjc			DIP14	33	°C/W
			SO-14	31
			HBM: human body model(4)	400
ESD			MM: machine model(5)	100	V
			CDM: charged device model(6)	1500

1.For supply voltages lower than ±15V the absolute maximum input voltage is equal to the supply voltage.

2.Short-circuits can cause excessive heating. Destructive dissipation can result from simultaneous shortcircuits on all amplifiers.

3.Rth are typical values.

4.Human body model: 100pF discharged through a 1.5kΩ resistor between two pins of the device, done for all couples of pin combinations with other pins floating.

5.Machine model: a 200pF cap is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5Ω), done for all couples of pin combinations with other pins floating.

6.Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins.

	Table 2.	Operating conditions
	Symbol	Parameter	Value	Unit
	VCC	Supply voltage	5 to ±15	V
		Operating free-air temperature range
	Toper	LM119	-55 to + 125	°C
		LM219	-40 to + 105
		LM319	0 to + 70

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Electrical characteristics	LM119-LM219-LM319

3 Electrical characteristics

Table 3.

VCC = ±15V, Tamb = +25°C (unless otherwise specified)

Symbol

Parameter

LM119 - LM219

LM319

Unit

Min.

Typ.

Max.

Min

Typ.

Max.

Input offset voltage (R

≤ 5kΩ) (1) (2)

0.7

4

2

8

Vio

s

mV

Tmin ≤ Tamb ≤ Tmax

7

10

Iio

Input offset current (1)

30

75

80

200

nA

Tmin ≤ Tamb ≤ Tmax

100

300

Iib

Input bias current (1)

150

500

250

1000

nA

Tmin ≤ Tamb ≤ Tmax

1000

1200

Avd

Large signal voltage gain

10

40

8

40

V/mV

Positive supply current

+

VCC = ±15V

8

11.5

8

12.5

mA

ICC

VCC+ = +5V, VCC- = 0V

4.3

4.3

-

Negative supply current

3

4.5

3

5

mA

ICC

Input common mode voltage range

Vicm

VCC = ±15V

±12

±13

±12

±13

V

VCC+ = +5V, VCC- = 0V

1

3

1

3

Low level output voltage

Io = 25mA

0.75

1.5

Vi

≤ -5mV

0.75

1.5

VOL

Vi

≤ -10mV

V

Tmin ≤ Tamb ≤ Tmax

- = 0V, I

V

CC

+ ≥ +4.5V, V

< 3.2mA

CC

o(sink)

Vi

≤ -6mV

0.23

0.4

Vi

≤ -10mV

0.3

0.4

High level output current (Vo = +35V)

IOH

Vi

≥ 5mV

0.2

2

μA

Vi

≥ 10mV

0.2

10

Tmin ≤Tamb ≤Tmax, Vi ≥ 5mV

1

10

t

Response time (3)

80

80

ns

res

1.These specifications apply for VCC = ±15V, unless otherwise stated.The offset voltage, offset current and bias current specifications apply for any supply voltage from a single +5V up to ±15V supplies. The offset voltages and offset current given are the maximum values required to drive the output down to 1V or up to +14V with a 1mA load current. Thus, these parameters define an error band and take into account the worst case effects of voltage gain and input impedance.

2.At output switch point, Vo ≈ 1.4V, no load, with VCC from 5V to ±15V and over the full input common-mode range.

3.The response time specified is for a 100mV input step with 5mV overdrive.

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