LINEAR TECHNOLOGY LT1638, LT1639 Technical data

查询LT1637IMS8供应商

FEATURES

■

Operates with Inputs Above V

■

Rail-to-Rail Input and Output

■

Low Power: 230µA per Amplifier Max

■

Gain Bandwidth Product: 1.2MHz

■

Slew Rate: 0.4V/µs

■

High Output Current: 25mA Min

■

Specified on 3V, 5V and ±15V Supplies

■

Reverse Battery Protection to 18V

■

No Supply Sequencing Problems

■

High Voltage Gain: 1500V/mV

■

Single Supply Input Range: –0.4V to 44V

■

High CMRR: 98dB

■

No Phase Reversal

■

Available in 14-Lead SO, 8-Lead MSOP and DFN
Packages

+

U

APPLICATIO S

■

Battery- or Solar-Powered Systems

Portable Instrumentation
Sensor Conditioning

■

Supply Current Sensing

■

Battery Monitoring

■

Micropower Active Filters

■

4mA to 20mA Transmitters

, LTC and LT are registered trademarks of Linear Technology Corporation.
Over-The-Top is a registered trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.

LT1638/LT1639

1.2MHz, 0.4V/µs

Over-The-Top Micropower

Rail-to-Rail Input and Output

Op Amps

U

DESCRIPTIO

The LT®1638 is a low power dual rail-to-rail input and output
operational amplifier available in the standard 8-pin PDIP and
SO packages as well as the 8-lead MSOP package. The
LT1639 is a low power quad rail-to-rail input and output
operational amplifier offered in the standard 14-pin PDIP and
surface mount packages. For space limited applications the
LT1638 is available in a 3mm x 3mm x 0.8mm dual fine pitch
leadless package (DFN).

The LT1638/LT1639 op amps operate on all single and
split supplies with a total voltage of 2.5V to 44V drawing
only 170µA of quiescent current per amplifier. These
amplifiers are reverse battery protected and draw no
current for reverse supply up to 18V.

The input range of the LT1638/LT1639 includes both
supplies, and a unique feature of this device is its capability
to operate over the top with either or both of its inputs
above V+. The inputs handle 44V, both differential and
common mode, independent of supply voltage. The input
stage incorporates phase reversal protection to prevent
false outputs from occurring when the inputs are below
the negative supply. Protective resistors are included in
the input leads so that current does not become excessive
when the inputs are forced below the negative supply. The
LT1638/LT1639 can drive loads up to 25mA and still
maintain rail-to-rail capability. The op amps are unity-gain
stable and drive all capacitive loads up to 1000pF when
optional output compensation is used.

TYPICAL APPLICATIO

Over-The-Top® Comparator with

100mV Hysteresis Centered at 0mV

10k

V1

10k

V2

1M

V

CC

+

A

1/2 LT1638

–

1M

V

= 5V, VCM = 0V TO 44V, tPD = 27µs

CC

1M

U

Output Voltage vs Input Voltage

V

CC

V

1M

CC

+

B

1/2 LT1638

–

V0

1638/39 TA01

5V

0V

20mV/DIV

1638/39 TA02

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LT1638/LT1639

1
2
3
4

OUT A

–IN A
+IN A

V

–

8
7
6
5

V+
OUT B
–IN B
+IN B

TOP VIEW

MS8 PACKAGE

8-LEAD PLASTIC MSOP

A

B

TOP VIEW

S PACKAGE

14-LEAD PLASTIC SO

N PACKAGE

14-LEAD PDIP

1

2

3

4

5

6

7

14

13

12

11

10

9

8

A

B

C

OUT A

–IN A

+IN A

V

+

+IN B

–IN B

OUT B

OUT D

–IN D

+IN D

V

–

+IN C

– IN C

OUT C

D

WW

W

ABSOLUTE MAXIMUM RATINGS

U

(Note 1)

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

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

Input Current ...................................................... ±25mA

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

Operating Temperature Range (Note 3)

LT1638C/LT1639C ............................. –40°C to 85°C

LT1638I/LT1639I................................ –40°C to 85°C

LT1638H/LT1639H ........................... – 40°C to 125°C

U

W

U

PACKAGE/ORDER INFORMATION

ORDER

PART NUMBER

LT1638CMS8
LT1638IMS8

MS8 PART

T

= 150°C, θJA = 300°C/W (MS8)

JMAX

MARKING*

LTCY

Specified Temperature Range (Note 4)

LT1638C/LT1639C ............................. –40°C to 85°C

LT1638I/LT1639I................................ –40°C to 85°C

LT1638H/LT1639H ........................... – 40°C to 125°C

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

DD Package ......................................................125°C

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

DD Package ...................................... –65°C to 125°C

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

ORDER

PART NUMBER

TOP VIEW

1

OUT A

2

–IN A

+IN A

N8 PACKAGE
8-LEAD PDIP

A

3

–

4

V

T

= 150°C, θJA = 150°C/W (N8)

JMAX

= 150°C, θJA = 190°C/W (S8)

T

JMAX

+

8

V

7

OUT B

6

–IN B

B

5

+IN B

S8 PACKAGE

8-LEAD PLASTIC SO

LT1638CN8
LT1638IN8
LT1638CS8
LT1638IS8
LT1638HS8

S8 PART MARKING

1638
1638I
1638H

ORDER

PART NUMBER

TOP VIEW

LT1638CDD

+

8

V

OUT B

7

–IN B

6

B

+IN B

5

LT1638IDD

–IN A

+IN A

1OUT A

2

A

3

–

V

4

DD PART MARKING*

8-LEAD (3mm × 3mm) PLASTIC DFN

T

JMAX

UNDERSIDE METAL INTERNALLY CONNECTED TO V

DD PACKAGE

= 125°C, θJA = 160°C/W (NOTE 10)

–

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

2

LAAL

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

T

= 150°C, θJA = 130°C/W (N)

JMAX

= 150°C, θJA = 160°C/W (S)

T

JMAX

ORDER

PART NUMBER

LT1639CN
LT1639IN
LT1639CS
LT1639IS
LT1639HS

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LT1638/LT1639

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the specified temperature range, otherwise specifications are at TA = 25°C.
V

= 3V, 0V; VS = 5V, 0V; VCM = V

S

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

OS

Input Offset Voltage LT1638 N, S Packages 200 600 µV

Input Offset Voltage Drift LT1638/LT1639 N, S Packages ● 26 µV/°C
(Note 9) LT1638MS8, LT1638DD ● 2.5 7 µV/°C

I

OS

I

B

Input Offset Current ● 16 nA

Input Bias Current ● 20 50 nA

Input Noise Voltage 0.1Hz to 10Hz 1 µV

e

n

i

n

R

IN

C

IN

Input Noise Voltage Density f = 1kHz 20 nV/√Hz
Input Noise Current Density f = 1kHz 0.3 pA/√Hz
Input Resistance Differential 1 2.5 MΩ

Input Capacitance 5pF
Input Voltage Range ● 044V

CMRR Common Mode Rejection Ratio V

A

VOL

V

OL

V

OH

I

SC

Large-Signal Voltage Gain VS = 3V, VO = 500mV to 2.5V, RL = 10k 200 1500 V/mV

Output Voltage Swing Low VS = 3V, No Load ● 38 mV

Output Voltage Swing High VS = 3V, No Load ● 2.94 2.98 V

Short-Circuit Current (Note 2) VS = 3V, Short to GND 10 15 mA

= half supply, unless otherwise noted. (Note 4)

OUT

0°C ≤ TA ≤ 70°C ● 850 µV
–40°C ≤ T

≤ 85°C ● 950 µV

A

LT1639 N, S Packages 300 700 µV
0°C ≤ T

≤ 70°C ● 950 µV

A

–40°C ≤ TA ≤ 85°C ● 1050 µV
LT1638 MS8 Package 350 900 µV

0°C ≤ TA ≤ 70°C ● 1150 µV
–40°C ≤ T

≤ 85°C ● 1450 µV

A

LT1638 DD Package 400 1100 µV
0°C ≤ T

≤ 70°C ● 1350 µV

A

–40°C ≤ TA ≤ 85°C ● 1450 µV

VCM = 44V (Note 5) ● 2.5 µA

VCM = 44V (Note 5) ● 830 µA
V

= 0V 0.1 nA

S

Common Mode, VCM = 0V to 44V 1.4 5.5 MΩ

= 0V to VCC – 1V ● 88 98 dB

CM

V

= 0V to 44V (Note 8) ● 80 88 dB

CM

0°C ≤ TA ≤ 70°C ● 133 V/mV
–40°C ≤ T

≤ 85°C ● 100 V/mV

A

VS = 5V, VO = 500mV to 4.5V, RL = 10k 400 1500 V/mV
0°C ≤ T

≤ 70°C ● 250 V/mV

A

–40°C ≤ TA ≤ 85°C ● 200 V/mV

VS = 3V, I

= 5mA ● 250 450 mV

SINK

VS = 5V, No Load ● 38 mV
VS = 5V, I

VS = 3V, I

= 10mA ● 500 700 mV

SINK

= 5mA ● 2.25 2.40 V

SOURCE

VS = 5V, No Load ● 4.94 4.98 V
VS = 5V, I

VS = 3V, Short to V

= 10mA ● 3.8 4.0 V

SOURCE

CC

VS = 5V, Short to GND 15 20 mA
VS = 5V, Short to V

CC

LT1638C/LT1639C, LT1638I/LT1639I

P-P

15 25 mA

15 25 mA

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LT1638/LT1639

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the specified temperature range, otherwise specifications are at TA = 25°C.
VS = 3V, 0V; VS = 5V, 0V; VCM = V

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

PSRR Power Supply Rejection Ratio VS = 3V to 12.5V, V

Reverse Supply Voltage IS = –100µA per Amplifier ● 18 27 V
Minimum Operating Supply Voltage ● 2.4 2.7 V

I

S

Supply Current per Amplifier 170 230 µA
(Note 6)

GBW Gain Bandwidth Product f = 5kHz 650 1075 kHz

(Note 5) 0°C ≤ T

SR Slew Rate AV = –1, RL = ∞ 0.210 0.38 V/µs

(Note 7) 0°C ≤ T

The ● denotes the specifications which apply over the specified temperature range, otherwise specifications are at TA = 25°C.
VS = ±15V, VCM = 0V, V

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

OS

I

OS

I

B

e

n

i

n

R

IN

C

IN

CMRR Common Mode Rejection Ratio V
A

VOL

V

O

Input Offset Voltage LT1638 N, S Packages 250 800 µV

Input Offset Voltage Drift LT1638/LT1639 N, S Packages ● 26 µV/°C
(Note 9) LT1638MS8, LT1638DD ● 2.5 7 µV/°C

Input Offset Current ● 16 nA
Input Bias Current ● 20 50 nA
Input Noise Voltage 0.1Hz to 10Hz 1 µV
Input Noise Voltage Density f = 1kHz 20 nV/√Hz
Input Noise Current Density f = 1kHz 0.3 pA/√Hz
Input Resistance Differential 1 2.5 MΩ

Input Capacitance 4.5 pF
Input Voltage Range ● –15 29 V

Large-Signal Voltage Gain VO = ±14V, RL = 10k 200 500 V/mV

Output Voltage Swing No Load ● ±14.9 ±14.95 V

= 0V, unless otherwise noted. (Note 4)

OUT

= half supply, unless otherwise noted. (Note 4)

OUT

= VO = 1V ● 90 100 dB

CM

≤ 70°C ● 550 kHz

A

–40°C ≤ T

–40°C ≤ T

≤ 85°C ● 500 kHz

A

≤ 70°C ● 0.185 V/µs

A

≤ 85°C ● 0.170 V/µs

A

0°C ≤ TA ≤ 70°C ● 1000 µV
–40°C ≤ T

≤ 85°C ● 1100 µV

A

LT1639 N, S Packages 350 900 µV
0°C ≤ T

≤ 70°C ● 1100 µV

A

–40°C ≤ TA ≤ 85°C ● 1200 µV
LT1638 MS8 Package 400 1050 µV

0°C ≤ TA ≤ 70°C ● 1250 µV
–40°C ≤ T

≤ 85°C ● 1550 µV

A

LT1638 DDPackage 450 1250 µV
0°C ≤ T

≤ 70°C ● 1450 µV

A

–40°C ≤ TA ≤ 85°C ● 1550 µV

Common Mode, V

= –15V to 29V ● 80 88 dB

CM

= –15V to 14V 500 MΩ

CM

0°C ≤ TA ≤ 70°C ● 125 V/mV
–40°C ≤ T

I

OUT

≤ 85°C ● 100 V/mV

A

= ±10mA ● ±13.7 ±14.0 V

LT1638C/LT1639C, LT1638I/LT1639I

● 275 µA

LT1638C/LT1639C, LT1638I/LT1639I

P-P

4

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LT1638/LT1639

ELECTRICAL CHARACTERISTICS

range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V, V

The ● denotes the specifications which apply over the specified temperature

= 0V, unless otherwise noted. (Note 4)

OUT

LT1638C/LT1639C, LT1638I/LT1639I

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

I

SC

Short-Circuit Current (Note 2) Short to GND 25 40 mA

≤ 70°C ● 20 mA

0°C ≤ T

A

–40°C ≤ T

≤ 85°C ● 15 mA

A

PSRR Power Supply Rejection Ratio VS = ±1.5V to ±22V ● 90 100 dB
I

S

Supply Current per Amplifier 205 280 µA

● 350 µA

GBW Gain Bandwidth Product f = 5kHz 750 1200 kHz

≤ 70°C ● 650 kHz

0°C ≤ T

A

–40°C ≤ T

≤ 85°C ● 600 kHz

A

SR Slew Rate AV = –1, RL = ∞, VO = ±10V, 0.225 0.4 V/µs

≤ 70°C ● 0.2 V/µs

0°C ≤ T

A

–40°C ≤ TA ≤ 85°C ● 0.18 V/µs

The ● denotes the specifications which apply over the full operating temperature range of –40°C ≤ TA ≤ 125°C.
VS = 3V, 0V; VS = 5V, 0V; VCM = V

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

OS

I

OS

I

B

CMRR Common Mode Rejection Ratio V

A

VOL

V

OL

V

OH

PSRR Power Supply Rejection Ratio VS = 3V to 12.5V, V

I

S

GBW Gain Bandwidth Product f = 5kHz 650 1075 kHz

SR Slew Rate AV = –1, RL = ∞ 0.21 0.38 V/µs

Input Offset Voltage LT1638S8 200 650 µV

Input Offset Voltage Drift (Note 9) ● 15 µV/°C
Input Offset Current ● 15 nA

Input Bias Current ● 150 nA

Input Voltage Range ● 0.3 44 V

Large-Signal Voltage Gain VS = 3V, VO = 500mV to 2.5V, RL = 10k 200 1500 V/mV

Output Voltage Swing Low No Load ● 15 mV

Output Voltage Swing High VS = 3V, No Load ● 2.9 V

Minimum Supply Voltage ● 2.7 V
Reverse Supply Voltage IS = –100µA ● 18 V
Supply Current 170 230 µA

(Note 6)

(Note 5)

(Note 7)

= Half Supply unless otherwise specified. (Note 4)

OUT

LT1639S 300 750 µV

VCM = 44V (Note 5) ● 10 µA

VCM = 44V (Note 5) ● 100 µA

= 0.3V to VCC – 1V ● 76 dB

CM

V

= 0.3V to 44V ● 72 dB

CM

VS = 5V, VO = 500mV to 4.5V, RL = 10k 400 1500 V/mV

I

= 5mA ● 900 mV

SINK

VS = 5V, I

VS = 3V, I

= 10mA ● 1500 mV

SINK

= 5mA ● 2V

SOURCE

VS = 5V, No Load ● 4.9 V
VS = 5V, I

= 10mA ● 3.5 V

SOURCE

= VO = 1V ● 80 dB

CM

LT1638H/LT1639H

● 3mV

● 3.2 mV

● 20 V/mV

● 35 V/mV

● 450 µA

● 350 kHz

● 0.1 V/µs

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