ISL28208 INTERSIL [Intersil Corporation], ISL28208 Datasheet

ISL28208

Manufacturer Part Number

ISL28208

Description

40V Precision Single Supply Rail-Rail Output Low Power Operational Amplifiers

Manufacturer

INTERSIL [Intersil Corporation]

Datasheet

1.ISL28208.pdf (25 pages)

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40V Precision Single Supply Rail-Rail Output Low

Power Operational Amplifiers

ISL28108, ISL28208

The ISL28108 and ISL28208 are single and dual low power

precision amplifiers optimized for single supply applications.

These devices feature a common mode input voltage range

extending to 0.5V below the V- rail, a rail-to-rail differential

input voltage range for use as a comparator, and rail to rail

output voltage swing, which make them ideal for single supply

applications where input operation at ground is important.

Added features include low offset voltage, and low

temperature drift making them the ideal choice for

applications requiring high DC accuracy. The output stage is

capable of driving large capacitive loads from rail to rail for

excellent ADC driving performance. The devices can operate

for single or dual supply from 3V (±1.5V) to 40V (±20V) and are

fully characterized at ±5V and ±15V. The combination of

precision, low power, and small footprint provides the user with

outstanding value and flexibility relative to similar competitive

parts.

Applications for these amplifiers include precision

instrumentation, data acquisition, precision power supply

control, and industrial control.

The ISL28108 single is offered in 8 Ld TDFN, SOIC and MSOP

packages. The ISL28208 dual amplifier is offered in 8 Ld

TDFN, MSOP, and SOIC packages. All devices are offered in

standard pin configurations and operate over the extended

temperature range to -40°C to +125°C.

March 17, 2011

FN6935.1

SINGLE-SUPPLY, LOW-SIDE CURRENT SENSE AMPLIFIER

SENSE

LOAD

FIGURE 1. TYPICAL APPLICATION CIRCUIT

10kΩ

REF

100kΩ

REF

IN+

IN-

ISL28108

100kΩ

V+

V-

to 40V

+3V

GAIN = 10

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

OUT

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

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

Features

• Single or Dual Supply, Rail-to-Rail Output and Below Ground

• Rail-to-rail Input Differential Voltage Range for Comparator

• Single Supply Range . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 40V

• Low Current Consumption (V

• Low Noise Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 15.8nV/√Hz

• Low Noise Current . . . . . . . . . . . . . . . . . . . . . . . . . . . 80fA/√Hz

• Low Input Offset Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 230µV

• Superb Temperature Drift

• Low Input Bias Current . . . . . . . . . . . . . . . . . . . . . . . -13nA Typ

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

• No Phase Reversal

Applications

• Precision Instruments

• Medical Instrumentation

• Data Acquisition

• Power Supply Control

• Industrial Process Control

(V-) input capability

Applications

- Voltage Offset TC . . . . . . . . . . . . . . . . . . . . . . 0.1µV/°C, Typ

FIGURE 2. INPUT OFFSET VOLTAGE vs INPUT COMMON MODE

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

-100

-200

-300

-400

-500

500

400

300

200

100

-16

-15.5

VOLTAGE, V

= ±15V

INPUT COMMON MODE VOLTAGE (V)

-40°C

-15

-14.5 -14

= ±15V

+25°C

= ±5V) . . . . . . . . . . . . . . 165µA

+125°C

13.5

14.5

Related parts for ISL28208

ISL28208 Summary of contents

Page 1

... The ISL28108 single is offered TDFN, SOIC and MSOP packages. The ISL28208 dual amplifier is offered TDFN, MSOP, and SOIC packages. All devices are offered in standard pin configurations and operate over the extended temperature range to -40° ...

Page 2

... 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. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL28108, ISL28208. For more information on MSL please see techbrief TB363. Pin Descriptions ISL28108 ISL28108 ISL28208 ...

Page 3

... Maximum Operating Junction Temperature . . . . . . . . . . . . . . . . . . +150°C Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V (±1.5V) to 40V (±20V ±15V 0V Open +25°C, unless otherwise noted. Boldface limits apply over CONDITIONS ISL28208 SOIC -40°C to +125°C ISL28208 TDFN -40°C to +125° -0. -1. -0. -1. -1.8V ...

Page 4

... Rise Time, V 10 OUT Signal Fall Time, V 90% to 10% OUT t Settling Time to 0.01% s 10V Step; 10 OUT 4 ISL28108, ISL28208 V ±15V 0V Open +25°C, unless otherwise noted. Boldface limits apply over CONDITIONS 40V Valid Input Voltage ...

Page 5

... Noise Current Density n 5 ISL28108, ISL28208 V ±5V 0V +25°C, unless otherwise noted. Boldface limits apply over the CONDITIONS ISL28208 SOIC -40°C to +125°C ISL28208 TDFN -40°C to +125°C -40°C to +125° -0. -1. -0. -1. ...

Page 6

... - =10k OUT P ±15V 0V FIGURE 4. ISL28208 INPUT OFFSET VOLTAGE DISTRIBUTION, FIGURE 6. ISL28208 SOIC TCV MIN (Note 7) TYP (Note 7) 0.4 = 2kΩ to 264 L = 2kΩ to 254 L = 2kΩ Open, unless otherwise specified. L 300 V = ±5V ...

Page 7

... Typical Performance Curves ±15V TCV (µV/C) OS FIGURE 7. ISL28208 TDFN TCV vs NUMBER OF AMPLIFIERS ±15V ±2.25V ± ±15V S - ±20V S -20 -30 -40 -50 -40 - TEMPERATURE (°C) FIGURE 9 ...

Page 8

... FREQUENCY (Hz) FIGURE 15. CMRR vs FREQUENCY, V 140 V = ±15V S 135 130 125 120 -40 - TEMPERATURE (°C) FIGURE 17. PSRR (DC) vs TEMPERATURE ISL28108, ISL28208 V = ±15V 0V 100 120 = ±15V S 120 110 100 ± ...

Page 9

... V = ±15V S - +75° 100k ±7.5V-DC IN -14 - I-FORCE (mA) FIGURE 21. ISL28208 OUTPUT VOLTAGE SWING vs LOAD CURRENT V = ±15V S 100 V = ±15V 10k OH + OUT -40 ...

Page 10

... FREQUENCY (Hz) FIGURE 27. MAX OUTPUT VOLTAGE vs FREQUENCY 140 V = ± 15V S 130 120 110 100 -60 -40 - TEMPERATURE (°C) FIGURE 29 TEMPERATURE OL 10 ISL28108, ISL28208 V = ±15V 0V 100 120 FIGURE 26. SHORT CIRCUIT CURRENT vs TEMPERATURE ±15V ...

Page 11

... OUT P 500mV V OUT P INF OUT P 100 1k 10k 100k FREQUENCY (Hz) FIGURE 35. GAIN vs FREQUENCY vs OUTPUT VOLTAGE 11 ISL28108, ISL28208 V = ±15V 0V -10 FIGURE 32. FREQUENCY RESPONSE vs CLOSED LOOP GAIN - 49 10M , V = ±15V ...

Page 12

... 10k V 600 400 200 0 -200 -400 -600 -800 -1000 TIME (s) FIGURE 41. INPUT NOISE VOLTAGE 0.1Hz TO 10Hz ISL28108, ISL28208 V = ±15V 0V 100 10 0. 0.01 100k 1M 10M = ±15V FIGURE 38. OUTPUT IMPEDANCE vs FREQUENCY 100 100 V = ±18V S 10 ...

Page 13

... Typical Performance Curves FIGURE 43. ISL28208 CHANNEL SEPARATION vs FREQUENCY, V 200 INPUT 160 120 OUTPUT 100 120 TIME (µs) FIGURE 44. POSITIVE OUTPUT OVERLOAD RESPONSE TIME ±15V INPUT 40 30 OUTPUT 100 120 TIME (µs) FIGURE 46. POSITIVE OUTPUT OVERLOAD RESPONSE TIME ± ...

Page 14

... 4pF 100 200 TIME (µs) FIGURE 50. LARGE SIGNAL 10V STEP RESPONSE, V FIGURE 52. SMALL SIGNAL TRANSIENT RESPONSE V 14 ISL28108, ISL28208 V = ±15V 0V 100 = ±15V FIGURE 49. OVERSHOOT vs CAPACITIVE LOAD ...

Page 15

... Applications Information Functional Description The ISL28108 and ISL28208 are single and dual, 1.2MHz, single supply rail-to-rail output amplifiers with a common mode input voltage range extending to a range of 0.5V below the V- rail. Their input stages are optimized for precision sensing of ground referenced signals in low voltage, single supply applications. The ...

Page 16

... Using Only One Channel The ISL28208 is a dual op-amp. If the application only requires one channel, the user must configure the unused channel to prevent it from oscillating. The unused channel will oscillate if the input and output pins are floating. This will result in higher than expected supply currents and possible noise injection into the channel being used ...

Page 17

Vin- 0.1 0 D13 D14 CinDif 5 0 1.21e-12 1150 R1 2 5e11 0 Vin+ GAIN = 0.3 Cin2 4.19e- 2.31e-11 Vmid GAIN = 0.6 7.62e9 GAIN = 261.74e-6 V3 ...

Page 18

... ISL28108_208 Vin+ Vin-V+ V- VOUT * source ISL28118_218_subckt_check_0 * *Voltage Noise E_En VIN 0.3 D_D13 D_D14 V_V7 1 0 0.1 R_R17 2 0 1150 18 ISL28108, ISL28208 * *Input Stage Q_Q6 PNP_input Q_Q7 PNP_input Q_Q8 V-- VIN- 7 PNP_LATERAL Q_Q9 V PNP_LATERAL I_I1 V 12e-6 I_I2 V 6E-6 ...

Page 19

... ∞ -10 100 1k 10k 100k FREQUENCY (Hz) FIGURE 61. CHARACTERIZED CLOSED LOOP GAIN vs FREQUENCY 19 ISL28108, ISL28208 100 10 1k 10k 100k 0.1 200 150 100 50 0 -50 -100 FIGURE 60. SIMULATED OPEN-LOOP GAIN, PHASE vs FREQUENCY 70 = 10Ω 100Ω ± ...

Page 20

... FIGURE 65. CHARACTERIZED CMRR vs FREQUENCY ±15V 4pF 100 200 TIME (µs) FIGURE 67. CHARACTERIZED LARGE SIGNAL 10V STEP RESPONSE 20 ISL28108, ISL28208 (Continued 49 10M L 150 100 300 400 FIGURE 68 ...

Page 21

... Characterization vs Simulation Results 100 -20 -40 -60 -80 -100 0 0.5 1.0 1.5 2.0 TIME (µs) FIGURE 69. CHARACTERIZED SMALL SIGNAL TRANSIENT RESPONSE 21 ISL28108, ISL28208 (Continued) 100 V = ±15V S 80 AND V = ± 4pF -20 -40 -60 -80 -100 2.5 3.0 3.5 4.0 FIGURE 70. SIMULATED SMALL SIGNAL TRANSIENT RESPONSE 20V VOH = 14 ...

Page 22

... Added bullet - “Rail-to-rail Input Differential Voltage Range for Comparator Applications” Changed Low Noise Current from "100fA/sq.root Hz" to "80fA/sq.root Hz" On page 2 in “Ordering Information” - Removed "coming soon" from ISL28208FRTZ part since it is releasing. On page 3, changed “ESD Tolerance” as follows: Human Body Model changed from " ...

Page 23

... M8.15E 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE Rev 0, 08/09 4 4.90 ± 0.10 PIN NO.1 ID MARK 5 1.27 TOP VIEW 1.75 MAX 0.175 ± 0.075 SIDE VIEW “A (1.27) (5.40) TYPICAL RECOMMENDED LAND PATTERN 23 ISL28108, ISL28208 A DETAIL "A" B 6.0 ± 0.20 3.90 ± 0.10 4 (0.35) x 45° 0.43 ± 0.076 0. 1.45 ± 0.1 (0.60) NOTES: (1.50) 1 ...

Page 24

... LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE Rev 4, 2/10 3.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW 2X 1.950 PIN #1 1 INDEX AREA 0.30 ± 0.10 2.30 ±0.10 BOTTOM VIEW 24 ISL28108, ISL28208 A B (1.50) ( 2.90 ) PIN 1 (6x 0.65) TYPICAL RECOMMENDED LAND PATTERN 0.75 ±0.05 6X 0.65 1.50 ±0. 0.30 ±0.05 0. NOTES: 1. Dimensions are in millimeters. ...

Page 25

... M8.118 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE Rev 3, 3/10 3.0±0. PIN TOP VIEW H 0.25 - 0.036 0. SIDE VIEW 1 (5.80) (4.40) (3.00) (0.65) TYPICAL RECOMMENDED LAND PATTERN 25 ISL28108, ISL28208 5 D 1.10 MAX 4.9±0.15 3.0±0.05 5 0.65 BSC 0.85±010 C SEATING PLANE 0.10 C 0.10 ± 0.05 NOTES (0.40) (1.40 SIDE VIEW 2 0.95 REF ...

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