ISL28291 Intersil Corporation, ISL28291 Datasheet

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ISL28291

Manufacturer Part Number
ISL28291
Description
Single And Dual Ultra-low Noise, Rail-to-rail, Op Amp
Manufacturer
Intersil Corporation
Datasheet

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Single and Dual Single Supply Ultra-Low
Noise, Low Distortion Rail-to-Rail Output,
Op Amp
The ISL28191 and ISL28291 are tiny single and dual
ultra-low noise, ultra-low distortion operational amplifiers.
Fully specified to operated down to +3V single supply. These
amplifiers have outputs that swing rail-to-rail, and an input
common mode voltage that extends to ground (ground
sensing).
The ISL28191 and ISL28291 are unity gain stable with an
input referred voltage noise of 1.7nV/√Hz. Both parts feature
0.00018% THD+N at 1kHz.
The ISL28191 is available in the space-saving 6 Ld µTDFN
(1.6mmx1.6mm) and SOT-23 packages. The ISL28291 is
available in the 10 Ld µTQFN (1.8mmx1.4mm) and MSOP
packages. All devices are guaranteed over -40°C to +125°C.
Ordering Information
ISL28191FHZ-T7*
Coming Soon
ISL28191FRUZ-TK*
ISL28291FUZ
ISL28291FUZ-T7*
Coming Soon
ISL28291FRUZ-T7*
*“-T” or “-TK” suffix is for tape and reel. Please refer to TB347 for
details on reel specifications.
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.
PART NUMBER
(Note)
GABJ
8291Z
8291Z
MARKING
PART
®
1
6 Ld SOT-23
Tape and Reel
6 Ld μTDFN
Tape and Reel
10 Ld MSOP
10 Ld MSOP
Tape and Reel
10 Ld μTQFN
Tape and Reel
PACKAGE
(Pb-free)
Data Sheet
MDP0043
MDP0038
L6.1.6x1.6A
MDP0043
L10.1.8x1.4A
DWG. #
PKG.
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• 1.7nV/√Hz input voltage noise at 1kHz
• 1kHz THD+N typical 0.00018% at 2V
• Harmonic Distortion -76dBc, -70dBc, f
• 61MHz -3dB bandwidth
• 630µV maximum offset voltage
• 3µA input bias current
• 100dB typical CMRR
• 3V to 5.5V single supply voltage range
• Rail-to-rail output
• Ground Sensing
• Enable pin
• Pb-free plus anneal available (RoHS compliant)
Applications
• Low noise signal processing
• Low noise microphones/preamplifiers
• ADC buffers
• DAC output amplifiers
• Digital scales
• Strain gauges/sensor amplifiers
• Radio systems
• Portable equipment
• Infrared detectors
September 19, 2007
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2006, 2007. All Rights Reserved.
ISL28191, ISL28291
P-P
o
= 1MHz
V
OUT
FN6156.4

Related parts for ISL28291

ISL28291 Summary of contents

Page 1

... The ISL28191 and ISL28291 are unity gain stable with an input referred voltage noise of 1.7nV/√Hz. Both parts feature 0.00018% THD+N at 1kHz. The ISL28191 is available in the space-saving 6 Ld µTDFN (1.6mmx1.6mm) and SOT-23 packages. The ISL28291 is available in the 10 Ld µ ...

Page 2

... LD SOT-23) TOP VIEW OUT IN ISL28291 (10 LD MSOP) TOP VIEW OUT_A 1 IN- IN+ EN_A 5 2 ISL28191, ISL28291 IN OUT_B 8 IN- IN+_B 6 EN_B ISL28191 (6 LD 1.6X1.6X0.5 µTDFN) TOP VIEW OUT IN IN ISL28291 (10 LD µ ...

Page 3

... ENH V EN Low Level ENL I EN Pin Input High Current ENH 3 ISL28191, ISL28291 Thermal Information = +25°C) Thermal Resistance 6 Ld SOT-23 Package . . . . . . . . . . . . . . . . . . . . . . . 6 Ld µTDFN Package . . . . . . . . . . . . . . . . . . . . . . . 10 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . 6 Ld µTQFN Package . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

... EN Time; 10 10% V ENABLE to Output Turn-off Delay Time; 10 10% V NOTE: 1. Parts are 100% tested at +25°C. Full temperature limits are guaranteed by bench and tester characterization. 4 ISL28191, ISL28291 = Open 1kΩ unless otherwise specified. Parameters are per amplifier +25°C. Boldface limits apply over the operating temperature range, ...

Page 5

... FREQUENCY (Hz) FIGURE 3. -3dB BANDWIDTH 100k V+ = 5V, 3V ENABLED AND DISABLED 10k SOURCE P-P 1k 100 10k 100k 1M FREQUENCY (Hz) FIGURE 5. INPUT IMPEDANCE vs FREQUENCY 5 ISL28191, ISL28291 R = 100k 100 L 10M 100M FIGURE 2. GAIN vs FREQUENCY FOR VARIOUS C LOAD -10 10M 100M FIGURE 4 ...

Page 6

... FREQUENCY (Hz) FIGURE 9. PSRR vs FREQUENCY -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 10k 100k 1M 10M FREQUENCY (Hz) FIGURE 11. CHANNEL TO CHANNEL CROSSTALK vs FREQUENCY 6 ISL28191, ISL28291 (Continued) 10M 100M -10 -20 -30 -40 -50 PSRR- PSRR+ -60 -70 -80 10M 100M FIGURE 10. OFF ISOLATION vs FREQUENCY 0.1 0. P-P 0.001 0.0001 100M ...

Page 7

... -0. 10kΩ 100mV OUT P-P -0.06 -0. 100 120 140 160 180 200 TIME (ns) FIGURE 17. SMALL SIGNAL STEP RESPONSE 7 ISL28191, ISL28291 (Continued) 2.5 3.0 3.5 ) FIGURE 14. INPUT REFERRED NOISE VOLTAGE vs OUT 1k 10k 100k V OUT -0.2 -0.4 -0.6 -0.8 FIGURE 18. LARGE SIGNAL (1V) STEP RESPONSE 100 1k 0 ...

Page 8

... TEMPERATURE (°C) FIGURE 21 TEMPERATURE 100 MAX -3.2 -3.4 MEDIAN -3.6 -3.8 -4.0 -4.2 -4.4 -4.6 -4.8 -5.0 -40 - TEMPERATURE (°C) FIGURE 23 TEMPERATURE V BIAS- 8 ISL28191, ISL28291 (Continued) 3.5 3.3 3.1 2.9 2.7 2.5 2.3 2.1 1.9 1.7 1.5 -40 1600 2000 FIGURE 20. SUPPLY CURRENT vs TEMPERATURE, -3.0 -3.2 -3.4 -3.6 -3.8 -4.0 -4.2 MIN -4.4 -4.6 80 100 120 -40 = ±2.5V FIGURE 22 800 600 400 ...

Page 9

... TEMPERATURE R OUT V = ±2.5V S Pin Descriptions ISL28191 ISL28191 ISL28291 (6 Ld μTDFN SOT-23) (10 Ld MSOP ( ( ISL28191, ISL28291 (Continued) 82 MAX MIN 70 80 100 120 -40 FIGURE 26. PSRR vs TEMPERATURE ±1.5V TO ±2. MAX ...

Page 10

... Figure 29. FIGURE 29. LIMITING THE INPUT CURRENT TO LESS THAN Using Only One Channel The ISL28291 is a Dual channel op amp. If the application only requires one channel when using the ISL28291, the user must configure the unused channel to prevent it from oscillating. Oscillation can occur if the input and output pins are floating ...

Page 11

... Sockets add parasitic inductance and capacitance which will result in additional peaking and overshoot. Current Limiting The ISL28191 and ISL28291 have no internal current- limiting circuitry. If the output is shorted possible to exceed the Absolute Maximum Rating for output current or power dissipation, potentially resulting in the destruction of the device ...

Page 12

... 0. SEATING PLANE 0. (L1 ISL28191, ISL28291 MDP0038 D SOT-23 PACKAGE FAMILY SYMBOL NOTES: 1. Plastic or metal protrusions of 0.25mm maximum per side are not A2 included. ...

Page 13

... E2 BOTTOM VIEW DETAIL SIDE VIEW 0.127±0.008 A1 DETAIL A 0.25 0.50 0.45 1.00 1.00 0.30 1.25 LAND PATTERN 6 13 ISL28191, ISL28291 L6.1.6x1. LEAD ULTRA THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE SYMBOL DAP SIZE 1. NOTES: 1. Dimensions are in mm. Angles in degrees. ...

Page 14

... PIN # BOTTOM VIEW C L (A1) NX (b) 5 SECTION "C-C" 2.20 1.00 1.00 0.60 0.50 1.80 0.20 0.40 10 LAND PATTERN 14 ISL28191, ISL28291 L10.1.8x1. LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE E SYMBOL 10X θ 0. ...

Page 15

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 15 ISL28191, ISL28291 MDP0043 A MINI SO PACKAGE FAMILY ...

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