Fairchild Semiconductor KM4120IT6TR3, KM4110IT5TR3 Datasheet

Features

■

505µA supply current

■

75MHz bandwidth

■

Power down to Is= 33µA (KM4120)

■

Fully specified at +2.7V and +5V supplies

■

Output voltage range: 0.07V to 4.86V; Vs= +5

■

Input voltage range: -0.3V to +3.8V; Vs= +5

■

50V/µs slew rate

■

±15mA linear output current

■

±30mA output short circuit current

■

12nV/√Hz input voltage noise

■

Directly replaces AD8031 in single supply applications

■

Small package options (SOT23-5 and SOT23-6)

Applications

■

Portable/battery-powered applications

■

A/D buffer

■

Active filters

■

Signal conditioning

■

Portable test instruments

General Description

The KM4110 (single) and KM4120 (single with disable) are low cost, voltage feedback amplifiers. These amplifiers are designed to operate on +2.7V, +5V, or ±2.5V supplies. The input voltage range extends 300mV below the negative rail and 1.2V below the positive rail.

The KM4110 offers superior dynamic performance with a 75MHz small signal bandwidth and 50V/µs slew rate. The combination of low power, high output current drive, and rail-to-rail performance make the KM4110 well suited for battery-powered communication/ computing systems.

The combination of low cost and high performance make the KM4110 suitable for high volume applications in both consumer and industrial applications such as wireless phones, scanners, and color copiers.

KM4110/KM4120

0.5mA, Low Cost, +2.7V & +5V, 75MHz Rail-to-Rail Amplifiers

www.fairchildsemi.com

REV. 1A February 2001

KM4110/KM4120 Packages

SOT23-5 (KM4110)

SOT23-6 (KM4120)

Non-Inverting Freq. Response Vs = +5V

Normalized Magnitude (1dB/div)

Frequency (MHz)

0.1

1

10

100

G = 2

R

f

= 1kΩ

+V

Out

-V

+In

1

2

s

+

3

5

-

4

-In

+V

1

Out

-V

2

s

3

+In

+

6

DIS

5

-

4

-In

s

DATA SHEET KM4110/KM4120

2 REV. 1A February 2001

Parameters Conditions TYP Min & Max UNITS NOTES

Case Temperature +25°C +25°C

Frequency Domain Response

-3dB bandwidth G = +1, Vo= 0.05V

pp

65 MHz 1

G = +2, Vo< 0.2V

pp

30 MHz

full power bandwidth G = +2, Vo= 2V

pp

12 MHz

gain bandwidth product 28 MHz

Time Domain Response

rise and fall time 0.2V step 7.5 ns settling time to 0.1% 1V step 60 ns overshoot 0.2V step, 10 % slew rate 2.7V step, G = -1 40 V/µs

Distortion and Noise Response

2nd harmonic distortion 1Vpp, 1MHz 67 dBc 3rd harmonic distortion 1Vpp, 1MHz 72 dBc THD 1Vpp, 1MHz 65 dB input voltage noise >1MHz 12 nV/√Hz

DC Performance

input offset voltage 0 ±5 mV 2

average drift 10 µV/°C

input bias current 1.2 ±3.5 µA2

average drift 3.5 nA/°C input offset current 30 350 nA 2 power supply rejection ratio DC 66 60 dB 2 open loop gain 98 65 dB 2 quiescent current 470 600 µA2

Disable Characteristics

turn on time 0.54 µs turn off time 4.3 µs off isolation 5MHz, RL= 100Ω 58 dB quiescent current 15 µA

Input Characteristics

input resistance 9 MΩ input capacitance 1.5 pF input common mode voltage range -0.3 to 1.5 V common mode rejection ratio DC, Vcm= 0V to Vs- 1.5 98 78 dB 2

Output Characteristics

output voltage swing RL= 10kΩ to Vs/2 0.05 to 2.6 V

RL= 1kΩ to Vs/2 0.05 to 2.61 0.2 to 2.35 V 2 linear output current ±15 mA short circuit output current ±25 mA power supply operating range 2.7 2.5 to 5.5 V

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 G = +1, Rf= 0.

2) 100% tested at +25°C.

Absolute Maximum Ratings Package Thermal Resistance

supply voltage 0 to +6V

Package θ

JA

maximum junction temperature +175°C

5 lead SOT23 256°C/W

storage temperature range -65°C to +150°C

6 lead SOT23 230°C/W

lead temperature (10 sec) +300°C operating temperature range (recommended) -40°C to +85°C input voltage range +V

s

+0.5V; -Vs -0.5V

internal power dissipation see power derating curves

KM4110/KM4120 Electrical Characteristics

(Vs= +2.7V, G = 2, RL= 1kΩ to Vs/2, Rf= 1kΩ; unless noted)

KM4110/KM4120 DATA SHEET

REV. 1A February 2001 3

PARAMETERS CONDITIONS TYP MIN & MAX UNITS NOTES

Case Temperature +25°C +25°C

Frequency Domain Response

-3dB bandwidth G = +1, Vo= 0.05V

pp

75 MHz 1

G = +2, Vo< 0.2V

pp

35 MHz

full power bandwidth G = +2, Vo= 2V

pp

15 MHz

gain bandwidth product 33 MHz

Time Domain Response

rise and fall time 0.2V step 6 ns settling time to 0.1% 2V step 60 ns overshoot 0.2V step, 12 % slew rate 5V step, G = -1 50 V/µs

Distortion and Noise Response

2nd harmonic distortion 2Vpp, 1MHz 64 dBc 3rd harmonic distortion 2Vpp, 1MHz 62 dBc THD 2Vpp, 1MHz 60 dB input voltage noise >1MHz 12 nV/√Hz

DC Performance

input offset voltage -1 ±5 mV 2

average drift 10 µV/°C

input bias current 1.2 ±3.5 µA2

average drift 3.5 nA/°C input offset current 30 350 nA 2 power supply rejection ratio DC 65 60 dB 2 open loop gain 80 65 dB 2 quiescent current 505 620 µA2

Disable Characteristics

turn on time 0.33 µs turn off time 5.5 µs off isolation 5MHz, RL= 100Ω 58 dB quiescent current 33 µA

Input Characteristics

input resistance 9 MΩ input capacitance 1.5 pF input common mode voltage range -0.3 to 3.8 V common mode rejection ratio DC, Vcm= 0V to Vs- 1.5 92 78 dB 2

Output Characteristics

output voltage swing RL= 10kΩ to Vs/2 0.08 to 4.84 V

RL= 1kΩ to Vs/2 0.07 to 4.86 0.2 to 4.65 V 2 linear output current ±15 mA short circuit output current ±30 mA power supply operating range 5 2.5 to 5.5 V

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 G = +1, Rf= 0.

2) 100% tested at +25°C.

KM4110/KM4120 Electrical Characteristics

(Vs= +5V, G = 2, RL= 1kΩ to Vs/2, Rf= 1kΩ; unless noted)

DATA SHEET KM4110/KM4120

4 REV. 1A February 2001

KM4110/KM4120 Performance Characteristics

(Vs= +5V, G = 2, RL= 1kΩ to Vs/2, Rf= 1kΩ; unless noted)

Non-Inverting Freq. Response Vs = +5V

G = 1

= 0

R

f

G = 2

Rf = 1kΩ

G = 10

Rf = 1kΩ

G = 5

Rf = 1kΩ

Normalized Magnitude (1dB/div)

0.1

Non-Inverting Freq. Response Vs = +2.7V

1

10

Frequency (MHz)

G = 1

= 0

R

f

G = 2

R

= 1kΩ

f

G = 10

Rf = 2kΩ

100

Inverting Freq. Response Vs = +5V

G = -2

Rf = 1kΩ

G = -10

R

= 1kΩ

f

G = -5

Rf = 1kΩ

G = -1

= 1kΩ

R

Normalized Magnitude (1dB/div)

0.1

Inverting Freq. Response Vs = +2.7V

f

1

10

Frequency (MHz)

G = -2

Rf = 1kΩ

G = -10

Rf = 1kΩ

R

G = -1

= 1kΩ

f

100

G = 5

Rf = 1kΩ

Normalized Magnitude (2dB/div)

0.1

1

10

Frequency (MHz)

Frequency Response vs. C

CL = 100pF

= 100Ω

R

s

CL = 50pF

= 100Ω

R

s

+

R

Magnitude (1dB/div)

1kΩ

0.1

s

C

R

L

1kΩ

L

1

L

10

Frequency (MHz)

Large Signal Frequency Response

Vo = 2V

pp

CL = 10pF

= 0Ω

R

s

CL = 20pF

= 100Ω

R

s

Vo = 1V

G = -5

Rf = 1kΩ

Normalized Magnitude (1dB/div)

100

0.1

1

10

100

Frequency (MHz)

100

Frequency Response vs. R

Magnitude (1dB/div)

0.1

RL = 100Ω

1

L

10

RL = 1kΩ

RL = 10kΩ

100

Frequency (MHz)

Frequency Response vs. Temperature

pp

Vo = 4V

pp

Magnitude (1dB/div)

0.1

1

Frequency (MHz)

10

100

Magnitude (1dB/div)

0.01

Frequency (MHz)

1

100.1

100