KM4270 Fairchild Semiconductor, KM4270 Datasheet

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KM4270

Manufacturer Part Number
KM4270
Description
Manufacturer
Fairchild Semiconductor
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
KM4270IC8TR3
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Part Number:
KM4270IM8TR3
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
KM4170, KM4270, KM4470
Low Cost, +2.7V & +5V, Rail-to-Rail I/O Amplifiers
Features at 2.7V
• 136µA supply current per amplifier
• 4.9MHz bandwidth
• Output swings to within 20mV of either rail
• Input voltage range exceeds the rail by >250mV
• 5.3V/µs slew rate
• 16mA output current
• 21nV/√Hz input voltage noise
• KM4170:
• KM4270:
• KM4470:
Applications
• Portable/battery-powered applications
• PCMCIA, USB
• Mobile communications, cellular phones, pagers
• Notebooks and PDA’s
• Sensor Interface
• A/D buffer
• Active filters
• Signal conditioning
• Portable test instruments
directly replaces OPA340, OPA343, and TLV2461 in
single supply applications and available in SC70-5 and
SOT23-5 package options
directly replaces MAX4126, OPA2340, LMV822 and
TLV2462 in single supply applications and available in
SOIC-8 and MSOP-8 package options
directly replaces MAX4129, OPA4340, LMV824 and
TLV2464 in single supply applications and available in
TSSOP-14 package option
Description
The KM4170 (single), KM4270 (dual), and KM4470 (quad)
are ultra-low cost, low power, voltage feedback amplifiers.
At 5V, the KM4X70 family uses only 160µA of supply current
per amplifier and are designed to operate from a supply range
of 2.5V to 5.5V (±1.25 to ±2.75). The input voltage range
exceeds the negative and positive rails.
The KM4X70 family of amplifiers offer high bipolar
performance at a low CMOS prices. They offer superior
dynamic performance with 4.9MHz small signal bandwidths
and 5.3V/µs slew rates. The combination of low power, high
bandwidth, and rail-to-rail performance make the KM4X70
amplifiers well suited for battery-powered communication/
computing systems.
-1.35
1.35
0
0.01
-2.0
Output Swing vs. Load
Large Signal Frequency Response
R
L
V
= 75
s
= 5V
R
L
Input Voltage (0.4V/div)
= 100
Frequency (MHz)
0.1
R
R
L
L
R
= 200
= 10k
L
= 1k
V
o
0
V
= 4V
o
= 2V
pp
pp
1
R
L
= 75/100
V
www.fairchildsemi.com
o
= 1V
REV. 5 December 2002
pp
10
2.0

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KM4270 Summary of contents

Page 1

... Signal conditioning • Portable test instruments Description The KM4170 (single), KM4270 (dual), and KM4470 (quad) are ultra-low cost, low power, voltage feedback amplifiers. At 5V, the KM4X70 family uses only 160µA of supply current per amplifier and are designed to operate from a supply range of 2.5V to 5.5V (± ...

Page 2

... KM4470 TSSOP Out1 1 -In1 2 +In1 +In2 5 -In2 6 2 SC70-5 Out +In -In MSOP Out1 -In1 2 7 Out2 - + +In1 3 6 -In2 - + +In2 KM4170, KM4270, KM4470 REV. 5 December 2002 ...

Page 3

... Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters. Notes: 1. For For 10kΩ, KM4170, KM4270, and KM4470 are 100% tested at 25°C. REV. 5 December 2002 / 5kΩ; unless otherwise noted) ...

Page 4

... 10kΩ 10kΩ 0.08 to 4.92 0. 1kΩ 200Ω 2.5 KM4170, KM4270, KM4470 Typ. Max. Unit 4.3 MHz 3.0 MHz 2.3 MHz 2.0 MHz 110 ns < V/µs -73 dBc -75 dBc 0. nV/√Hz 1 µ ...

Page 5

... KM4170, KM4270, KM4470 Typical Operating Characteristics (V = +2.7V 10kΩ Non-Inverting Freq. Response 0. 0.01 0.1 Frequency (MHz) Non-Inverting Frequency Response 0.01 0.1 Frequency (MHz) Frequency Response vs ...

Page 6

... Output Swing vs. Load 1.35 0 -1.35 10000 100000 -2.0 Input Voltage Noise 0.1k KM4170, KM4270, KM4470 o 50kHz 100kHz 50kHz 10kHz, 20kHz 10kHz 1 1.5 2 2.5 Output Amplitude ( 100 1000 10000 100000 Frequency (Hz 10k 100 ...

Page 7

... KM4170, KM4270, KM4470 Application Information General Description The KM4X70 family of amplifiers are single supply, general purpose, voltage-feedback amplifiers. They are fabricated on a complementary bipolar process, feature a rail-to-rail input and output, and are unity gain stable. The typical non-inverting circuit schematic is shown in Figure 1. ...

Page 8

... Quad Channel, Dual Supply, 14 lead TSSOP Evaluation board schematics are shown in Figures 5a, 5b, 5c and layouts are shown in Figure 6a through Figure 6l. 8 Figure 5a: KM4170 Evaluation Board Schematic Products KM4170IT5 KM4170IS5 KM4270IC8 KM4270IM8 KM4470IP14 Figure 5b: KM4270 Evaluation Board Schematic KM4170, KM4270, KM4470 REV. 5 December 2002 ...

Page 9

... KM4170, KM4270, KM4470 Figure 5c: KM4470 Evaluation Board Schematic REV. 5 December 2002 DATA SHEET 9 ...

Page 10

... DATA SHEET KM4170 Evaluation Board Layout Figure 6a: KEB002 (top side) Figure 6c: KEB011 (top side) 10 KM4170, KM4270, KM4470 Figure 6b: KEB002 (bottom side) Figure 6d: KEB011 (bottom side) REV. 5 December 2002 ...

Page 11

... KM4170, KM4270, KM4470 KM4270 Evaluation Board Layout Figure 6e: KEB006 (top side) Figure 6g: KEB010 (top side) REV. 5 December 2002 Figure 6f: KEB006 (bottom side) Figure 6h: KEB010 (bottom side) DATA SHEET 11 ...

Page 12

... DATA SHEET KM4470 Evaluation Board Layout Figure 6i: KEB012 (top side) Figure 6k: KEB012 (layer1 mask) 12 KM4170, KM4270, KM4470 Figure 6j: KEB012 (bottom side) Figure 6l: KEB012 (layer2 mask) REV. 5 December 2002 ...

Page 13

... KM4170, KM4270, KM4470 KM4170 Package Dimensions b SOT23 SC70 REV. 5 December 2002 NOTE: 1. All dimensions are in millimeters. 2 Foot length measured reference to flat foot surface parallel to DATUM ’A’ and lead surface. 3. Package outline exclusive of mold flash & metal burr. ...

Page 14

... DETAIL-A L NOTE 45° DETAIL – H – Gauge 3 7 Plane 0.25mm 03 2 – B – Detail Scale 40 Section – A – KM4170, KM4270, KM4470 SOIC-8 SYMBOL MIN MAX A1 0.10 0.25 B 0.36 0.46 C 0.19 0.25 D 4.80 4.98 E 3.81 3.99 e 1.27 BSC H 5.80 6.20 h 0.25 0.50 L 0.41 1.27 A 1.52 1.72 8 ...

Page 15

... KM4170, KM4270, KM4470 KM4470 Package Dimensions TSSOP E/2 1.0 DIA 1.0 ddd N/2 TIPS 1.0 ccc – A – aaa C – C – bbb NOTES: 1 All dimensions are in millimeters (angle in degrees). Dimensioning and tolerancing per ASME Y14.5–1994. ...

Page 16

... Reel 3000 Reel 2500 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness. KM4170, KM4270, KM4470 © 2001 Fairchild Semiconductor Corporation ...

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