MAX9004EUB 데이터 시트보기 (PDF) - Maxim Integrated

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MAX9004EUB

Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs

Maxim Integrated 

Low-Power, High-Speed, Single-Supply

Op Amp + Comparator + Reference ICs

1 AOUT

OP AMP

2 AIN-

3 AIN+

4 VSS

MAX9000

MAX9003

VDD 8

COUT 7

COMP

CIN+ 6

REF

REF 5

1 AOUT

OP AMP

2 AIN-

3 AIN+

4 VSS

MAX9002

MAX9005

VDD 8

COUT 7

COMP

CIN+ 6

CIN- 5

2 SHDN

NORMAL/SHUTDOWN CONTROL

4M

VDD 13

3 AOUT

OP AMP

4 AIN-

5 AIN+

6 VSS MAX9001

MAX9004

COMP

VDD 12

CIN+ 11

CIN- 10

REF

REF 9

_______________Detailed Description

The MAX9001–MAX9005 are combinations of a high-

speed operational amplifier, a 185ns comparator, and a

1%-accurate, 8ppm/°C, 1.230V reference. The devices

are offered in space-saving 8-pin and 10-pin µMAX pack-

ages. The comparator’s inverting input is internally con-

nected to the reference output in the MAX9000/MAX9003.

The MAX9002/MAX9005 do not have an internal refer-

ence, but the inverting input of the comparator is avail-

able externally. The MAX9001/MAX9004 include both the

inverting input and the reference output. The MAX9000/

MAX9001/MAX9003/MAX9004 typically consume only

410µA of quiescent current, while the MAX9002/

MAX9004 typically consume 340µA. These low-power,

Rail-to-Rail devices provide excellent AC and DC perfor-

mance and are ideally suited to operate from a single

supply. The MAX9001/MAX9004 feature a shutdown

mode that sets the outputs in a high-impedance state and

reduces the supply current to 2µA, making these devices

ideal for portable and battery-powered systems.

Op Amp

The op amps in the MAX9000/MAX9001/MAX9002 are

unity-gain stable with a gain-bandwidth product of

1.25MHz and a slew rate of 0.85V/µs. The amplifiers in

the MAX9003/MAX9004/MAX9005 are stable at closed-

loop gains greater than or equal to 10V/V, with a gain-

bandwidth product of 8MHz and a slew rate of 6.0V/µs.

The common-mode input voltage range extends from

150mV below the negative rail to within 1.2V of the pos-

itive rail. The amplifier output does not undergo phase

reversal when the common-mode input range is

exceeded, and the input impedance is relatively con-

stant for input voltages within both supply rails. The

MOS differential inputs of the amplifiers feature

extremely high input impedance and ultra-low input

bias currents. The CMOS output stage achieves true

rail-to-rail operation; the outputs swing to within a few

millivolts of the supply rails, thus extending the dynamic

range. A proprietary design achieves high open-loop

gain, enabling these devices to operate at low quies-

cent currents yet maintain excellent DC and AC char-

acteristics under various load conditions. These

devices have been designed to maintain low offset volt-

age over the entire operating-temperature, common-

mode, and supply-voltage ranges.

Figure 1. MAX9000–MAX90005 Functional Diagrams

12 ______________________________________________________________________________________

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