LT1716HS5_技术文档

LT1716

SOT-23, 44V, Over-The-Top,

Micropower, Precision

Rail-to-Rail Comparator

U

FEATURES

DESCRIPTIO

■

Operates from 2.7V to 44V

The LT^®1716 comparator operates on any total power

supply voltage between 2.7V and 44V drawing 35µA of

quiescent current. The LT1716 has a unique input stage

that can be taken 44V above V^–, independent of V⁺supply.

(Built-in resistors protect the inputs for faults below the

negativesupplyofupto5V.)Theinputscanwithstand44V

both differential and common mode.

Over-The-Top^®: Input Common Mode Range

■

Extends 44V Above V^–, Independent of V⁺

■

Micropower: 35µA I_Q

■

Offset Voltage: 1.5mV Max

■

5-Pin SOT-23 Package

Valid Output with Either Input 5V Below V^–

■

Rail-to-Rail Output Swing

The output stage includes a class “B” pull-up current

source, eliminating the need for an external resistive pull-

up and saving power. Output voltage swings to within

35mV of the negative supply and 55mV of the positive

supply, which makes the comparator a good choice for

low voltage single supply operation. The output stage is

also designed to drive loads connected to a higher supply

than the LT1716 supply, the same as an open collector

output stage.

Output Can Drive Loads Above V⁺

■

Internal Pull-Up Current

■

–40°C to 125°C Operating Temperature Range

U

APPLICATIO S

■

Power Supply Monitors

■

Relay/Lamp Driver

■

Oscillators

The LT1716 is available in a SOT-23 5-lead package.

, LTC and LT are registered trademarks of Linear Technology Corporation.

Over-The-Top is a registered trademark of Linear Technology Corporation.

■

Peak Detector

■

Level Shifting

U

TYPICAL APPLICATIO

Lamp Monitor

Input Bias Current vs Input Bias Voltage

12µ

5V TO 44V

3V

V

= 5V, 0V

INPUT

S

1M

8µ

4µ

0.1µF

+IN = 10V

INPUT

ABOVE

SUPPLY

LAMP

ON/OFF

BELOW

100k

5k

CMPD6001

6n

SUPPLY

5

3n

4

–

0

R

S

1

+IN = 2V

LT1716

LAMP GOOD

0.15Ω

–3n

3

1W

+

–6n

2

0.25A TO 2.5A

–100µ

–0.5m

–1m

–1.5m

0.04

R

≥

S

1716 TA01

I

L

–10 –5

0

5

–

10

(V)

15

20

45

V

IN

1716 TA02

1716f

1

LT1716

W W

U W

U

W

U

ABSOLUTE AXI U RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

ORDER PART NUMBER

Supply Voltage (V⁺to V^–)........................................ 44V

Differential Input Voltage ......................................... 44V

Input Voltage ...................................................44V, –5V

Output Short-Circuit Duration (Note 2)............ Indefinite

Operating Temperature Range (Note 3)

LT1716C/LT1716I ............................. –40°C to 85°C

LT1716H .......................................... –40°C to 125°C

Specified Temperature Range (Note 4)

LT1716CS5

LT1716IS5

LT1716HS5

TOP VIEW

+

OUT 1

–

5 V

V

2

+

–

+IN 3

4 –IN

S5 PART MARKING*

LTYD

S5 PACKAGE

5-LEAD PLASTIC SOT-23

T_JMAX= 150°C, θ_JA= 250°C/W

LT1716C/LT1716I ............................. –40°C to 85°C

LT1716H .......................................... –40°C to 125°C

Maximum Junction Temperature .......................... 150°C

Storage Temperature Range ................. –65°C to 150°C

Lead Temperature (Soldering, 10 sec).................. 300°C

*The temperature grades are identified by a label on the shipping container.

Consult LTC Marketing for parts specified with wider operating temperature ranges.

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the full operating

temperature range of –40°C ≤ T_A≤ 85°C, otherwise specifications are at T_A= 25°C. Single supply operation V⁺= 5V, V^–= 0V;

V_CM= V⁺/2 unless otherwise noted. (Note 4)

LT1716C/LT1716I

SYMBOL

PARAMETER

CONDITIONS

0.5V < V < (V – 1V)

MIN

TYP

MAX

UNITS

V

Input Offset Voltage

300

1600

2100

2500

µV

OS

CM

CC

0°C < T < 70°C

●

A

–40°C < T < 85°C

A

Input Offset Voltage Drift

(Note 5)

0°C < T < 70°C

●

2

µV/°C

A

–40°C < T < 85°C

A

+

I

Input Offset Current

V

= V /2

= 0V

●

3

15

1.3

0.9

nA

µA

OS

CM

= 44V

+

Input Bias Current

V

= V /2

20

35

50

75

nA

B

CM

+

●

V = 0V, V = 44V

2

3

6

1

nA

µA

CM

V

= 0V

= 44V

= –5V

●

13

9

1.4

CM

µA

mA

Input Voltage Range (Note 7)

Common Mode Rejection Ratio

●

0.5

44

V

+

CMRR

PSRR

0.5V ≤ V < (V – 1V)

●

89

81

110

dB

CM

0.5V ≤ V < 44V, (Note 6)

CM

–

+

Power Supply Rejection Ratio

Minimum Operating Supply Voltage

Large-Signal Voltage Gain

V = 0V, V = 1.5V; 2.7V < V < 36V

●

95

110

2.4

dB

V

CM

2.7

A

R = 1k; 1V < V

L

< 4V

200

100

500

V/mV

VOL

OUT

●

+

I

Supply Current

V = 3V, R = Open, V = High

35

40

50

65

µA

S

L

O

+

V = 5V, R = Open, V = High

55

75

µA

L

O

+

V = 12V, R = Open, V = High

60

85

µA

L

O

1716f

2

LT1716

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the full operating

temperature range of –40°C ≤ T_A≤ 85°C, otherwise specifications are at T_A= 25°C. Single supply operation V⁺= 5V, V^–= 0V;

V_CM= V⁺/2 unless otherwise noted. (Note 4)

LT1716C/LT1716I

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

mA

–

I

Output Sink Current (Note 2)

Output Source Current

Output Voltage Swing Low

V

> 30mV

●

10

20

SC

OVERDRIVE

+

= 5mV, V

= 1V

60

85

µA

OUT

V

I

= 0mA, V = –10mV

OVERDRIVE

●

20

75

200

550

35

mV

OL

SINK

–

(Referred to V )

= 0.1mA

= 1mA

= 5mA

110

300

900

V

Output Voltage Swing High

(Referred to V )

I

= 0µA, V = 10mV

OVERDRIVE

= 10µA

●

30

130

55

185

mV

OH

SOURCE

+

Leakage Current

V

= 40V, V

> 100mV

●

0.5

3

2

µA

µs

OUT

OVERDRIVE

Propagation Delay

> 100mV, R

= 10k

5.5

OVERDRIVE

LOAD

The ● denotes the specifications which apply over the full operating temperature range of –40°C ≤ T_A≤ 85°C, otherwise specifications

are at T_A= 25°C. Split supply operation V_S= ±15V, V_CM= 0V unless otherwise noted. (Note 4)

LT1716C/LT1716I

SYMBOL

PARAMETER

CONDITIONS

–14.5V < V < 14V

MIN

TYP

MAX

UNITS

V

Input Offset Voltage

300

1500

2000

2400

µV

OS

CM

0°C < T < 70°C

●

A

–40°C < T < 85°C

A

Input Offset Voltage Drift (Note 5)

Input Offset Current

0°C < T < 70°C

●

2

µV/°C

A

–40°C < T < 85°C

A

I

V

= 0V

= 29V

= –15V

●

3

15

0.9

1.3

nA

µA

OS

CM

Input Bias Current

V

= 0V

30

50

60

100

nA

B

CM

●

V

= 29V

= –15V

= –20V

●

6

3

1

9

13

1.4

µA

mA

CM

Input Voltage Range (Note 7)

Common Mode Rejection Ratio

●

–14.5

14

V

CMRR

PSRR

–14.5V < V < 14V

●

92

81

110

98

dB

CM

–14.5V < V < 29V (Note 6)

CM

Power Supply Rejection Ratio

Minimum Operating Supply Voltage

Large-Signal Voltage Gain

V = ±1.35V to ±22V

S

●

90

110

2.4

dB

V

2.7

95

A

R = 6k; –14V < V < 14V

L OUT

500

400

1000

V/mV

VOL

●

I

Supply Current

V = ±15V, R = Open, V = High

40

20

µA

mA

µA

S

L

O

–

+

Output Sink Current (Note 2)

Output Source Current

Output Voltage Swing Low

V

> 30mV

10

70

SC

OVERDRIVE

= 5mV, V

= –14V

105

OUT

V

I

= 0mA, V = –10mV

OVERDRIVE

●

20

75

200

550

35

mV

OL

SINK

–

(Referred to V )

= 0.1mA

= 1mA

= 5mA

110

300

900

1716f

3

LT1716

ELECTRICAL CHARACTERISTICS

unless otherwise noted. (Note 4)

The ● denotes the specifications which apply over the full operating

temperature range of –40°C ≤ T_A≤ 85°C, otherwise specifications are at T_A= 25°C. Split supply operation V_S= ±15V, V_CM= 0V

LT1716C/LT1716I

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

V

Output Voltage Swing High

(Referred to V )

I

= 0µA, V

= 10µA

= 10mV

OVERDRIVE

●

45

140

75

210

mV

OH

SOURCE

+

Leakage Current

V

= 25V, V

> 100mV

●

0.6

5.5

2

9

µA

µs

OUT

OVERDRIVE

Propagation Delay

> 100mV, R

= 10k

OVERDRIVE

LOAD

The ● denotes the specifications which apply over the operating temperature range of –40°C < T_A< 125°C, otherwise specifications

are at T_A= 25°C. Single supply operation V⁺= 5V, V^–= 0V, V_CM= V_CC/2 unless otherwise noted. (Note 4)

LT1716H

TYP

SYMBOL

PARAMETER

CONDITIONS

0.5V < V < (V – 1V)

MIN

MAX

UNITS

V

Input Offset Voltage

300

1600

2900

µV

OS

CM

CC

●

Input Offset Voltage Drift (Note 5)

Input Offset Current

2

3

µV/°C

+

I

V

= V /2

= 0V

●

220

1.3

0.9

nA

µA

OS

CM

= 44V

+

Input Bias Current

V

= V /2

20

50

900

nA

B

CM

●

+

V = 0V, V = 44V

2

3

6

1

nA

µA

CM

V

= 0V

= 44V

= –5V

●

25

14

1.4

CM

mA

Input Voltage Range (Note 7)

Common Mode Rejection Ratio

0.5

44

V

+

CMRR

PSRR

0.5V < V < (V – 1V)

●

75

72

110

dB

CM

0.5V < V < 44V (Note 6)

CM

–

+

Power Supply Rejection Ratio

Minimum Operating Supply Voltage

Large-Signal Voltage Gain

V = 0V, V = 1.5V, 2.7V < V < 36V

●

85

110

2.4

dB

V

CM

2.7

A

R = 1k, 1V < V < 4V

OUT

200

20

500

V/mV

VOL

L

R = 6k

●

L

+

I

Supply Current per Amplifier

V = 3V, R = Open, V = High

35

40

50

70

µA

S

L

O

+

V = 5V, R = Open, V = High

55

75

µA

L

O

+

V = 12V, R = Open, V = High

60

85

µA

L

O

●

–

+

I

Output Sink Current (Note 2)

Output Source Current

V

> 30mV

5

10

mA

SC

OVERDRIVE

= 5mV, V

= 1V

60

110

µA

OUT

V

Output Voltage Swing Low

(Referred to V )

I

= 0mA, V = –10mV

OVERDRIVE

●

20

75

200

550

60

170

480

1200

mV

OL

SINK

–

= 0.1mA

= 1mA

= 5mA

V

Output Voltage Swing High

(Referred to V+)

I

= 0µA, V = –10mV

OVERDRIVE

= 10µA

●

50

130

110

220

mV

OH

SOURCE

Leakage Current

V

= 40V, V

> 100mV

●

1.7

6

5

9

µA

OUT

OVERDRIVE

Propagation Delay

> 100mV, R

= 10k

µs

OVERDRIVE

LOAD

1716f

4

LT1716

The ● denotes the specifications which apply over the operating

ELECTRICAL CHARACTERISTICS

unless otherwise noted. (Note 4)

temperature range of –40°C < T_A< 125°C, otherwise specifications are at T_A= 25°C. Split supply operation V_S= ±15V, V_CM= 0V

LT1716H

TYP

SYMBOL

PARAMETER

CONDITIONS

–14.5V < V < 14V

MIN

MAX

UNITS

V

OS

Input Offset Voltage

300

1500

2900

µV

CM

●

Input Offset Voltage Drift (Note 5)

Input Offset Current

2

3

µV/°C

I

V

CM

V

CM

V

CM

= 0V

= 29V

= –15V

●

280

0.9

1.3

nA

µA

OS

Input Bias Current

V

CM

= 0V

30

50

60

1400

nA

B

●

V

CM

V

CM

V

CM

= 29V

= –15V

= –20V

●

6

3

1

20

30

1.4

µA

mA

Input Voltage Range (Note 7)

Common Mode Rejection Ratio

●

–14.5

14

V

CMRR

PSRR

–14.5V < V < 14V

●

85

70

110

93

dB

CM

–14.5V < V < 29V (Note 6)

CM

Power Supply Rejection Ratio

Minimum Operating Supply Voltage

Large-Signal Voltage Gain

V = ±1.35V to ±22V

S

●

80

110

2.4

dB

V

2.7

95

A

VOL

R = 6k; –14V < V

R = 6k; –13V < V

L

< 14V

< 13V

500

50

1000

V/mV

L

OUT

●

I

Supply Current

V = ±15V, R = Open, V = High

40

10

µA

mA

µA

S

L

O

–

+

Output Sink Current (Note 2)

Output Source Current

Output Voltage Swing Low

V

> 30mV

●

5

SC

OVERDRIVE

= 5mV, V

= –14V

70

155

OUT

V

OL

I

= 0mA, V = –10mV

OVERDRIVE

●

20

75

200

70

170

480

1200

mV

SINK

–

(Referred to V )

= 0.1mA

= 1mA

= 5mA

550

V

OH

Output Voltage Swing High

(Referred to V )

I

= 0µA, V = 10mV

OVERDRIVE

= 10µA

●

45

140

120

250

mV

SOURCE

+

Leakage Current

V

= 25V, V

> 100mV

●

1.5

5.5

5

µA

µs

OUT

OVERDRIVE

Propagation Delay

> 100mV, R

= 10k

10

OVERDRIVE

LOAD

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: A heat sink may be required to keep the junction temperature

below absolute maximum.

meet performance from –40°C to 85° but is not tested or QA sampled at

the temperatures. The LT1716I is guaranteed to meet specified

performance from –40°C to 85°C. The LT1716H is guaranteed to meet

specified performance from –40°C to 125°C.

Note 5: This parameter is not 100% tested.

Note 6: Typical input offset voltage of 500µV at V = 44V above V and a

Note 3: The LT1716C/LT1716I are guaranteed functional over the

operating temperature range of –40°C to 85°C. The LT1716H is

guaranteed functional over the operating temperature range of –40°C

to 125°C.

Note 4: The LT1716C is guaranteed to meet specified performance from

0°C to 70°C. The LT1716C is designed, characterized and expected to

–

CM

–

maximum input offset voltage of 4mV at V = 44V above V .

CM

Note 7: If one input is within this input range, the other input can go 5V

–

below V and the output will be valid.

1716f

5

LT1716

U W

TYPICAL PERFOR A CE CHARACTERISTICS

Input Bias Current

vs Differential Input Voltage

Input Bias Current

vs Common Mode Voltage

Input Bias Current

vs Temperature

10

8

1.0000

0.1000

0.0100

0.0010

0.0000

–0.0010

–0.0100

1

0

+

–

V

= ±15V

V

= 15V

S

125°C

+

V

= –15V

V

= 15V

–

V

= –15V

CM

V

= 0V

25°C

85°C

+

–

V

= 5V

= 0V

–IN

+IN

6

–1

–2

–3

–4

= 2.5V

CM

–55°C

CURRENT

OUT OF PIN

4

2

125°C

CURRENT

OUT OF PIN

TRANSITION

0

REGION

INPUTS

EXCEED SUPPLY

–2

75 100

0

5

10

15

(V)

20 25

30

–50 –25

0

25 50

TEMPERATURE (°C)

125 150

0

–0.2 –0.15 –0.1 –0.05

0.05 0.1 0.15 0.2

V

CM

DIFFERENTIAL INPUT VOLTAGE (V)

1716 G01

1716 G02

1716 G03

Output Low Voltage

vs Sink Current

Output High Voltage

vs Source Current

Input Bias Current with Inputs

Driven Above the Supply

2.0

1.6

1.2

0.8

0.4

0

5.0

4.9

4.8

4.7

4.6

4.5

10

8

+

–

+

–

V

= 5V

= 0V

V

= 5V

= 0V

V

AT 125°C

OL

125°C

85°C

V

AT –55°C

OH

V

AT 85°C

OL

6

V

AT 85°C, 125°C

OH

V

AT 25°C

OL

4

V

AT 25°C

–55°C

OH

25°C

V

AT –55°C

OL

2

0

+

INPUTS

EXCEED SUPPLY

V

= 5V

–

= 0V

–2

0

2

4

6

8

10 12 14 16 18 20

0

5

10 15 20 25 30 35 40 45 50

LOADING SOURCE CURRENT (µA)

0

5

10 15 20 25 30 35 40 45 50

(V)

LOADING SINK CURRENT (mA)

V

CM

1716 G04

1716 G05

1716 G06

Input Bias Current with Inputs

Driven Below the Supply

Positive Supply Current

vs Output Sinking Current

Supply Current vs Temperature

1000

100

10

200

0

100

90

80

70

60

50

40

30

20

10

0

+

–

+

–

V

= 2.7V TO 44V

= 0V

T = 25°C

A

V

= 5V

= 0V

–200

–400

–600

–800

–1000

–1200

OUTPUT LOW

–55°C < T < 125°C

A

V

= ±15V

V = 5V

S

OUTPUT HIGH

0.1

1

10

100

–5

–4

–3

–2

–1

0

–50

50

100 125

150

–25

0

25

75

OUTPUT SINK CURRENT (mA)

V

(V)

TEMPERATURE (°C)

CM

1716 G09

1716 G07

1716 G08

1716f

6

LT1716

U W

TYPICAL PERFOR A CE CHARACTERISTICS

Output Leakage Current

vs Output Voltage

Output Sinking Current Limit

vs Temperature

Reverse Supply Current

500

450

400

350

300

250

0.6

0.5

0.4

0.3

0.2

0.1

0

30

25

20

15

10

5

+

–

+

V

T

= 5V

OUTPUT SHORTED TO V

T

= 25°C

A

= 0V

= 25°C

A

V

= 5V

S

V

S

= ±15V

0

75 100

5

10 15 20 25 30 35 40 45

0

5

10

15

20

25

–50 –25

0

25 50

125 150

OUTPUT VOLTAGE (V)

REVERSE VOLTAGE (V)

TEMPERATURE (°C)

1716 G10

1716 G27

1716 G11

Output Sinking Current

vs Total Supply Voltage

Total Switching Time

vs Temperature

Total Switching Time

vs Overdrive

100

10

1

100

10

1

30

25

20

15

10

5

+

R

V

R

V

= 10k

L

OUTPUT SHORTED TO V

A

(RISE)

(FALL)

= 90% V

OUT

= 10% V

OUT

STEP

(RISE)

(FALL)

FINAL

T

= 25°C

V

T

= 100mV

= 10mV

= 25°C

OVERDRIVE

A

V

= ±15V

RISE

S

V

= ±15V

FALL

S

±15V

FALL TIME

±15V

±2.5V

FALL TIME

RISE TIME

V

= ±2.5V

FALL

S

V

= ±2.5V

RISE

S

±2.5V

RISE TIME

0

10 20

40

60 70 80

100

90

–50 –25

0

25 50 75

TEMPERATURE (°C)

150

0

30

50

100 125

1

10

TOTAL SUPPLY VOLTAGE (V)

100

OVERDRIVE (mV)

1716 G14

1716 G12

1716 G13

Total Switching Time

vs Total Supply Voltage

Total Switching Time

vs Pull-Up Resistor

Response Time

100

10

1

100

10

1

R

V

= 10k

V

T

= 90% V

FINAL

L

OUT

= 90% V

= 10% V

(RISE)

(FALL)

TOTALSUPPLY

30V

26V

= 100mV

OUT

FINAL

+

STEP

OVERDRIVE

= 25°C

V

IN

V

= 10mV

= 1/2 V

CM

STEP

OVERDRIVE

A

= 100mV

= 10mV

V

S

= ±15V

RISE

FALL

RISE

5V

0V

R

= 100k

= 10k

L

V

= ±2.5V

S

RISE

R

R = OPEN

L

V

L

OUT

V

= 5V, 0V

= 10mV

TIME (µs)

1716 G17

S

OD

L

IN

R

= 10k, 100k, OPEN

+

–

V

= 26V TO 30V

0

10

20

40

1

10

100

1000

10000

30

= 29.99V

TOTAL SUPPLY VOLTAGE (V)

PULL-UP RESISTOR (kΩ)

1716 G16

1716 G15

1716f

7

LT1716

U W

TYPICAL PERFOR A CE CHARACTERISTICS

Response Time

30V

26V

₊25V

25V

+

V_IN

21V

15V

21V

15V

R_L= 10k, 100k

V_OUT

–15V

V_OUT

R_L= OPEN

–15V

5V

0V

V_OUT

V_S= 5V, 0V

V_OD= 10mV

TIME(µs)

1716 G18

V

_S= ±15V

TIME(µs)

1716 G19

V

_S= ±15V

TIME(µs)

1716 G20

V_OD= 10mV

R

_L= 10k, 100k, OPEN

R

_L= 10k, 100k, OPEN

R_L= 10k, 100k, OPEN

V_IN⁺= 30V TO 26V

V_IN^–= 26.01V

V_IN⁺= 21V TO 25V

V_IN^–= 24.99V

V_IN⁺= 25V TO 21V

V_IN^–= 21.01V

Response Time

₊2.6V

0V

+

2.5V

2.4V

+

V_IN

V_OUT

5V

V_IN

–100mV

15V

2.5V

5V

R_L= 10k

R_L= 100k

R_L= 10k, 100k

V_OUT

R_L= OPEN

0V

–15V

0V

V_S= 5V

V_OD= 10mV

TIME(µs)

1716 G22

V_S= ±15V

V_OD= 10mV

TIME(µs)

1716 G23

V_S= 5V

V_OD= 10mV

TIME(µs)

1716 G21

R_L= 10k, 100k, OPEN

V_IN⁺= 2.6V TO 2.5V

V_IN^–= 2.51V

R_L= 10k, 100k, OPEN

V_IN⁺= –100mV TO 0V

V_IN^–= –10mV

R_L= 10k, 100k, OPEN

V_IN⁺= 2.4V TO 2.5V

V_IN^–= 2.49V

Below V_S^–Fault (Rising)

Below V_S^–Fault (Falling)

Response Time

–14.9V

+

–19V

15V

–14.9V

+

₊100mV

V_IN

–19V

15V

0V

15V

R_L= 10k, 100k

V_OUT

R_L= OPEN

–15V

V_S= ±15V

TIME(µs)

1716 G25

V_S= ±15V

TIME(µs)

1716 G26

V

_S= ±15V

TIME(µs)

1716 G24

R_L= 10k, 100k, OPEN

V_IN⁺= –19V TO –14.9V

V_IN^–= –15V

R_L= 10k, 100k, OPEN

V_IN⁺= –14.9V TO –19V

V_IN^–= –15V

V_OD= 10mV

R_L= 10k, 100k, OPEN

V_IN⁺= 110mV TO 0mV

V_IN^–= 10mV

1716f

8

LT1716

U

W U U

APPLICATIO S I FOR ATIO

The LT1716 comparator features low power operation

with exceptional input precision with rail-to-rail input and

output swing. The comparator operates flawlessly even

when the inputs are pulled over the positive rail or below

the negative rail.

A Schottky diode in the collector of each NPN transistor of

the NPN input stage allows the LT1716 to operate with

either or both of its inputs above V⁺. At about 0.3V above

V⁺, the NPN transistor is fully saturated and the input bias

current is typically 4µA at room temperature. The input

offsetvoltageistypically500µVwhenoperatingaboveV⁺.

The LT1716 will operate with its input 44V above V^–,

regardless of V⁺.

Supply Voltage

The LT1716 operates from 2.7V to 44V. The comparator

can be shut down by removing V⁺. In this condition, the

input bias current is typically less than 3nA, even if the

inputs are 44V above the negative supply. The LT1716 is

protected against reverse battery voltages of up to 20V.

The reverse battery current is resistive as shown in the

reverse supply current graph.

The transition to the negative common mode input stage

occurs at 0.3V above V^–. Above this trip point the PNP

stage is active. When the inputs are 0.3V below V^–, the

common base input stage is active in addition to the PNP

stage. The input bias current out of each input becomes

V_IN/5kΩ. The LT1716 is designed to operate when either

input falls below the negative supply. Internal resistors

protect the inputs for faults below the negative supply of

up to 5V without phase reversal. The built-in 5k resistor

limits the current at each input to 1mA at 5V below the

negative supply. External matched input resistors can be

added for increased voltage fault operation below the

negative supply but the maximum input current should be

kept under 1mA.

Inputs

The comparator inputs can swing from 0.5V above to 44V

above V^–. If one input is within this range, the other input

can be forced up to 5V below V^–without phase reversal

occuring at the output.

The LT1716 has three stages—NPN, PNP and common

base (see Simplified Schematic)—resulting in three dis-

tinct operating regions and two transition regions as

shown in the Input Bias Current vs Common Mode typical

performance curve.

For input voltages about 0.8V or more below V⁺, the PNP

input stage is active and the input bias current is typically

–4nA. The PNP differential input stage will have bias

current that flows out of the device. With a differential

input voltage of even just 100mV or so, there will be zero

bias current into the higher of the two inputs, while the

current flowing out of the lower input will be twice the

measured bias current.

When the input voltage is about 0.5V or less from V⁺, the

NPN state is operating and the input bias current is

typically 10nA. Increases in temperature will cause the

voltageatwhichoperationswitchesfromthePNPstageto

the NPN stage to move towards V⁺. The input offset

voltage of the NPN stage is untrimmed and is typically

500µV.

Input Protection

The inverting and noninverting input pins of the LT1716

have on-chip protection. ESD protection is provided to

prevent damage during handling. The input transistors

have voltage clamping and limiting resistors to protect

against excursions as much as 5V below V^–. There are no

clamping diodes between the inputs and the maximum

differential input voltage is 44V.

Output

The output stage of the LT1716 can drive loads connected

to a supply more positive than the device, the same as

comparators with open collector output stages. The out-

put of the LT1716 can be pulled up to 44V above V^–,

regardless of V⁺.

1716f

9

LT1716

W

SI PLIFIED SCHE ATIC

1716f

10

LT1716

U

PACKAGE DESCRIPTIO

S5 Package

5-Lead Plastic TSOT-23

(Reference LTC DWG # 05-08-1635)

0.62

MAX

0.95

REF

2.90 BSC

(NOTE 4)

1.22 REF

1.50 – 1.75

(NOTE 4)

2.80 BSC

1.4 MIN

3.85 MAX 2.62 REF

PIN ONE

RECOMMENDED SOLDER PAD LAYOUT

PER IPC CALCULATOR

0.30 – 0.45 TYP

5 PLCS (NOTE 3)

0.95 BSC

0.80 – 0.90

0.20 BSC

DATUM ‘A’

0.01 – 0.10

1.00 MAX

0.30 – 0.50 REF

1.90 BSC

0.09 – 0.20

(NOTE 3)

NOTE:

S5 TSOT-23 0302

1. DIMENSIONS ARE IN MILLIMETERS

2. DRAWING NOT TO SCALE

3. DIMENSIONS ARE INCLUSIVE OF PLATING

4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR

5. MOLD FLASH SHALL NOT EXCEED 0.254mm

6. JEDEC PACKAGE REFERENCE IS MO-193

1716f

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.

11

LT1716

U

TYPICAL APPLICATIO S

Overcurrent Flag

4.5V TO 44V

0.1µF

LT1634-1.25

113k

1%

3V

11.8k

1%

5

4

3

CMPD6263

OVERCURRENT

–

1

10M

1%

LT1716

R

S

+

10.7k

1%

2

10M

1%

LOAD

0.1

I

=

MAX

1716 TA03

R

S

Charge/Discharge Indicator

0.1Ω

+

CHARGE

CURRENT

LOAD

V

CHARGER

3V TO 44V

–

3V

0.1µF

681Ω

1%

5

4

CMPD6263

CHARGE

–

1

1M

1%

LT1716

3

+

681Ω

1%

2

1M

1%

1716 TA04

RELATED PARTS

PART NUMBER

DESCRIPTION

COMMENTS

LTC1442

Dual Micropower Comparator and 1% Reference

Nanopower Comparator and 1% Reference

Micropower Precision Shunt Reference

1.182V ±1% Reference, ±10mV

Input Offset

MAX

LTC1540

MAX

LT1634

0.05%, 10µA, 10ppm/°C Max Drift, 1.25V, 2.5V, 4.096V, 5V, MSOP,

SO-8, TO-92 Packages

LTC1921

LTC1998

Dual –48V Telecom Supply Monitor

Micropower Li-Ion Battery Monitor

Monitors Two Supplies and Fuses

1% Trip Point Adjustable from 2.5V to 3.25V

1716f

LT/TP 0503 1K • PRINTED IN USA

12 ^{LinearTechnology Corporation}

1630 McCarthy Blvd., Milpitas, CA 95035-7417

●

(408) 432-1900 FAX: (408) 434-0507 www.linear.com

LINEAR TECHNOLOGY CORPORATION 2002


型号：	LT1716HS5
厂家：	Linear
描述：	SOT-23, 44V, Over-The-Top, Micropower, Precision Rail-to-Rail Comparator SOT -23 ， 44V ，过了顶，微功耗，精密轨到轨比较器比较器放大器放大器电路光电二极管
文件：	总12页 (文件大小：354K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LT1716HS5 [Linear]

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