Fairchild Semiconductor KM4210IC8 Datasheet

Preliminary

January 2001

KM4210

Dual, 0.5mA, Low Cost, +2.7V and

+5V, 75MHz Rail-to-Rail Amplifier

Product Brief

Features

■

505µA supply current per amplifier

■

75MHz bandwidth

■

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 AD8032

■

Package option (MSOP-8)

Applications

■

Portable/battery-powered applications

■

A/D buffer

■

Active filters

■

Signal conditioning

■

Portable test instruments

General Description

The KM4210 is a dual, low power, low cost, voltage feedback amplifier. The KM4210 uses only 505µA of supply current per amplifer, and is 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 KM4210 offers high bipolar performance at a low CMOS price. The KM4210 offers superior dynamic performance with a 75MHz small signal bandwidth and 50V/µs slew rate. The combination of low power, high bandwidth, and rail-to-rail performance make the KM4210 well suited for battery-powered communication/computing systems.

The KM4110 (single) and KM4120 (single with disable) are also available.

Outperforms the competition in single-supply applications at a

lower cost!

Advertised KM4210 Competitor Units Specifications A

G = 1 BW 75 80 MHz Noise 12 15 nV/√Hz Slew rate 50 30 V/µs Supply current/amp 0.5 0.8 µA

Typical Performance Plot

Ordering Information

Part No. Package Container Pack Qty Eval Bd*

KM4210IM8 MSOP-8 Rail 50 KEB010 KM4210IM8TR3 MSOP-8 Reel 4000 KEB010

Temperature range for all parts: -40°C to +85°C.

* Evaluation boards are available to aid in the evaluation of these products. See the full

data sheet or website for complete information.

Preliminary

TBD

SOIC shown (not actual size)

Out1

-In1

+In1

-V

Out2

-In2

+In2

MSOP

Preliminary

KM4210

Typical Specifications Preliminary

Available Packages

Typical Circuit Configuration

1/2 KM4210

0.01µF

6.8µF

Out1

In1

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.

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, or to affect its safety or effectiveness.

Lit No. XXXXXX-XXX

Electrical Characteristics

(G = +2, Rf= 1kΩ, RL= 1kΩ to Vs/2, Ta= +25°C, unless noted)

PARAMETERS CONDITIONS TYP TYP UNITS

Vs = +2.7V Vs= +5V

Frequency Domain Response

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

x 75 MHz

G = +2, Vo< 0.2V

x 35 MHz

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

x x MHz

gain bandwidth product x x MHz

Time Domain Response

rise and fall time 0.2V step y y ns settling time to 0.1% 2V step x x ns overshoot 0.2V step y y % slew rate 5V step x 50 V/µs

Distortion and Noise Response

2nd harmonic distortion 2V

, 1MHz y y dBc 3rd harmonic distortion 2Vpp, 1MHz y y dBc THD 2Vpp, 1MHz x x dB input voltage noise >1MHz x 12 nV/Hz input current noise >1MHz x x pA/Hz

DC Performance

input offset voltage x -1 mV

average drift x 10 µV/°C

input bias current x 1.2 µA

average drift y 3.5 nA/°C input offset current x 30 nA power supply rejection ratio DC x 65 dB open loop gain x 80 dB quiescent current per amplifier x 505 µA

Input Characteristics

input resistance x x MΩ input capacitance x x pF input common mode voltage range x -0.3 to 3.8 V common mode rejection ratio DC x 92 dB

Output Characteristics

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

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

*x and y = TBD

Absolute Maximum Ratings

supply voltage 0 to +6V maximum junction temperature +175°C storage temperature range -65°C to +150°C lead temperature (10 sec) +300°C operating temperature range -40° to +85°C input voltage range +Vs + 0.5V, -Vs - 0.5V internal power disapation see power derating curves in the full data sheet

θjafor 8 lead MSOP 206°C/W