intersil ISL28286, ISL28486 DATA SHEET

®

ISL28286, ISL28486

Data Sheet September 22, 2006

Dual Micropower Single Supply Rail-to-Rail Input and Output (RRIO) Precision Op-Amp

The ISL28286 and ISL28486 are Dual and Quad channel micropower precision operational amplifiers optimized for single supply operation at 5V down to 2.4V. For equivalent performance in a single channel op-amp reference EL8186.

The ISL28286 and ISL28486 feature an Input Range Enhancement Circuit (IREC) which enables both parts to maintain CMRR performance for input voltages equal to the positive and negative supply rails. The input signal is capable of swinging 10% above the positive supply rail and to ground with only a slight degradation of the CMRR performance. The output operation is rail to rail.

Both parts draw minimal supply current while meeting excellent DC-accuracy, AC-performance, noise and output drive specifications.

The ISL28286 and ISL28486 can be operated from a single lithium cell or two Ni-Cd batteries. The input range includes both positive and negative rail.

Ordering Information

PART

PART NUMBER

ISL28286FUZ (See Note)

ISL28286FUZ-T7 (See Note)

Coming Soon ISL28486FAZ (Note)

Coming Soon ISL28486FAZ-T7 (Note)

NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

MARKING

8286Z 50/Tube 10 Ld MSOP

8286Z 7”

28486FAZ 97/Tube 16 Ld QSOP

28486FAZ 7”

TAPE &

REEL PACKAGE

(Pb-free) 10 Ld MSOP

(1500 pcs)

(1000 pcs)

(Pb-free)

16 Ld QSOP (Pb-free)

PKG.

DWG. #

MDPOO43

MDP0043

MDP0040

FN6312.0

Features

• 120µA typ supply current for both channels

• 600µV max offset voltage

• 500pA typ input bias current

• 400kHz gain-bandwidth product

• 115dB PSRR and CMRR

• Single supply operation down to 2.4V

• Input is capable of swinging above V+ and to V- (ground sensing)

• Rail-to-rail input and output (RRIO)

• Pb-free plus anneal available (RoHS compliant)

Applications

• Battery- or solar-powered systems

• 4mA to 25mA current loops

• Handheld consumer products

• Medical devices

• Thermocouple amplifiers

• Photodiode pre-amps

• pH probe amplifiers

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

| Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

Pinouts

ISL28286

(10 LD MSOP)

TOP VIEW

IN+_A

1

EN

_A

2

V-

3

EN

_B

4

IN+_B IN-_B

5 6

10

IN-_A

-

9

8

7

OUT_A

V+

OUT_B

+

-

ISL28286, ISL28486

ISL28486

(16 LD QSOP)

TOP VIEW

OUT_A

1

IN-_A

2

IN+_A

3

V+

4

IN+_B IN+_C

5

IN-_B

-

6

+

-

+

-

+

OUT_D

16

IN-_D

15

IN+_D

14

V-

13

12

IN-_C

11

OUT_B

7

NC NC

8 9

10

OUT_C

2

FN6312.0

September 22, 2006

ISL28286, ISL28486

Absolute Maximum Ratings (T

Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V

Supply Turn On Voltage Slew Rate . . . . . . . . . . . . . . . . . . . . . 1V/μs

Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA

Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V

= +25°C)

A

Output Short-Circuit Duration . . . . . . . . . . . . . . . . . . . . . . .Indefinite

Ambient Operating Temperature Range . . . . . . . . .-40°C to +125°C

Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C

Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . +125°C

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . V- - 0.5V to V+ + 0.5V

ESD tolerance, Human Body Model . . . . . . . . . . . . . . . . . . . . . .3kV

ESD tolerance, Machine Model . . . . . . . . . . . . . . . . . . . . . . . . .300V

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = T

Operating Junction

Electrical Specifications V

= 5V, V- = 0V,VCM = 2.5V, TA = +25°C unless otherwise specified.

+

Boldface limits apply over the operating temperature range, -40°C to +125°C, temperature data

A

guaranteed by characterization

PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT

V

OS

ΔV

OS

------------------

ΔTi me

ΔV

OS

--------------- -

ΔT

I

OS

I

B

e

N

Input Offset Voltage -600

-650

±20 600

650

µV

Long Term Input Offset Voltage Stability 1.2 µV/Mo

Input Offset Drift vs Temperature 0.3 µV/°C

Input Offset Current -1.5

-1.5

Input Bias Current -2

-2.5

Input Noise Voltage Peak-to-Peak f = 0.1Hz to 10Hz 4.5 µV

±0.25 2.5

2.5

±0.5 2

2.5

nA

PP

Input Noise Voltage Density fO = 1kHz 48 nV/√Hz

i

N

Input Noise Current Density fO = 1kHz 0.18 pA/√Hz CMIR Input Voltage Range Guaranteed by CMRR test 05V CMRR Common-Mode Rejection Ratio V

= 0V to 5V 90

CM

115 dB

80

PSRR Power Supply Rejection Ratio V

A

V

VOL

OUT

Large Signal Voltage Gain VO = 0.5V to 4.5V, RL = 100kΩ 275

Maximum Output Voltage Swing Output low, RL = 100kΩ 3630mV

= 2.4V to 5V 90

+

80

275

V

= 0.5V to 4.5V, RL = 1kΩ 25 V/mV

O

115 dB

500 V/mV

Output low, R

Output high, R

= 1kΩ 130 175

L

= 100kΩ 4.990

L

= 1kΩ 4.800

L

4.97

4.750

SR+ Positive Slew Rate 0.13

0.10

SR- Negative Slew Rate 0.10

0.09

3

mV

225

4.996 V

4.880 V

0.17 0.20

V/µs

0.25

0.13 0.17

V/µs

0.19

FN6312.0

September 22, 2006

ISL28286, ISL28486

Electrical Specifications V

= 5V, V- = 0V,VCM = 2.5V, TA = +25°C unless otherwise specified.

+

Boldface limits apply over the operating temperature range, -40°C to +125°C, temperature data guaranteed by characterization (Continued)

PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT

GBW Gain Bandwidth Product 400 kHz I

S,ON

Supply Current, Enabled All channels enabled. 120 156

175

I

S,OFF

+ Short Circuit Sourcing Capability RL = 10Ω 29

I

SC

I

- Short Circuit Sinking Capability RL = 10Ω 24

SC

Supply Current, Disabled All channels disabled. 4 7

9

31 mA

23

26 mA

19

V V V I

ENH

I

ENL

S INH INL

Minimum Supply Voltage 2.4 V

Enable Pin High Level 2 V

Enable Pin Low Level 0.8 V

Enable Pin Input Current VEN = 5V 0.7 1.3

1.5

Enable Pin Input Current VEN = 0V -0.1 0 +0.1 µA

Typical Performance Curves

µA

+1

0

-1

-2

-3

-4

GAIN (dB)

-5

-6

-7 8

Vout = 50mVp-p

= 1

A

V

= 3pF

C

L

R

= 0/RG = INF

F

1k

10k 100k 1M

VS = ±2.5V

RL = 1k

VS = ±2.5V

RL = 10k

FREQUENCY (Hz)

VS = ±1.2V

RL = 1k

VS = ±1.2V

RL = 10k

5M

FIGURE 1. FREQUENCY RESPONSE vs SUPPLY VOLTAGE

200

V

= VDD/2

CM

A

= -1

150

V

100

50

V

= 5V

DD

0

V

-50

-100

-150

INPUT OFFSET VOLTAGE (µV)

-200 05

= 2.5V

DD

1324

OUTPUT VOLTAGE (V)

45 40 35 30 25 20

AV = 100

GAIN (dB)

15

= 10kΩ

R

L

C

= 2.7pF

L

10

R

F/RG

= 221kΩ

R

F

5

R

= 2.23kΩ

G

0 100 10k 100k 1M

VS = ±2.5V

= 99.02

1k

FREQUENCY (Hz)

VS = ±1.25V

VS = ±1.0V

FIGURE 2. FREQUENCY RESPONSE vs SUPPLY VOLTAGE

0

-20

-40

-60

-80

INPUT OFFSET VOLTAGE (µV)

-100

VOS, µV

05

1324

COMMON-MODE INPUT VOLTAGE (V)

FIGURE 3. INPUT OFFSET VOLTAGE vs OUTPUT VOLTAGE FIGURE 4. INPUT OFFSET VOLTAGE vs COMMON-MODE

INPUT VOLTAGE

4

FN6312.0

September 22, 2006

ISL28286, ISL28486

Typical Performance Curves (Continued)

120

80

40

0

GAIN (dB)

-40

-80 1 1k 100k 10M

10

FREQUENCY (Hz)

FIGURE 5. A

120

110

100

90 80

70 60 50

PSRR (dB)

40

VS = 5VDC

30

V

SOURCE

20

R

L

10

AV = +1

0

10 10k 1M

vs FREQUENCY @ 100kΩ LOAD

VOL

PSRR -

= 1Vp-p

= 100k

Ω

100 100k1k

10k 1M100

PSRR +

FREQUENCY (Hz)

FIGURE 7. PSRR vs FREQUENCY FIGURE 8. CMRR vs FREQUENCY

80

40

0

-40

-80

-120

PHASE (°)

100

80

60

40

GAIN (dB)

20

0

-20 10 10k 1M

FIGURE 6. A

100

CMRR(dB)

100

FREQUENCY (Hz)

VOL

90 80 70 60 50 40 30 20 10

10 1k 10k 100k

100

PHASE

GAIN

100k1k

vs FREQUENCY @ 1kΩ LOAD

VS = 5VDC V

SOURCE

= 100k

R

L

AV = +1

FREQUENCY (Hz)

= 1Vp-p

Ω

200 150 100 50 0

-50

-100

-150

PHASE (°)

2.56

2.54

2.52

2.50

2.48

VOLTS (V)

2.46

2.44

2.42

V

IN

V

OUT

= 5VDC

V

S

V

= 0.1Vp-p

OUT

= 500Ω

R

L

= +1

A

V

0 2 4 6 8 10 12 14 16 18 20

TIME (µs)

5.0

V

4.0

3.0

2.0

VOLTS (V)

1.0

0

0 100 200 300 400 500

= 5VDC

V

S

V

OUT

= 500Ω

R

L

= -2

A

V

TIME (µs)

IN

= 0.1Vp-p

OUT

V

OUT

IN

FIGURE 9. SMALL SIGNAL TRANSIENT RESPONSE FIGURE 10. LARGE SIGNAL TRANSIENT RESPONSE

5

FN6312.0

September 22, 2006