MX584 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MX584

Pin-Programmable Precision Voltage Reference

Maxim Integrated 

Pin-Programmable, Precision Voltage

Reference

applications where the driving voltage is 5V to 40V. The

programmed current ranges from 0.75mA to 5mA.

Negative 10V Reference

In applications which require a -10V, -7.5V, -5.0V, or

-2.5V reference, the MX584 can be connected as a

two-terminal device and biased like a zener diode. The

circuit is shown in Figure 9. +VS and VOUT are connect-

ed to the analog ground bus, and the MX584’s COM-

MON pin is connected, through a resistor, to the

negative supply. With 1mA flowing in the reference, the

output voltage is typically 2mV greater than what is

obtained with the conventional, positive hook-up.

When using the 2-terminal connection, the load and the

bias resistor must be selected so that the current flow-

ing in the reference is maintained between 1mA and

5mA. The operating temperature range for this connec-

tion is limited to -55°C to +85°C.

Reference for DACs and ADCs

The MX584 is well suited for use with a wide variety of

DACs, especially CMOS DACs. Figure 10 shows a cir-

cuit in which an MX7533 10-bit DAC outputs 0 to -5V

when using a +5V reference. For a positive DAC out-

put, the MX584 can be configured as a two-terminal

negative reference as well by using the connection of

Figure 9.

In Figure 11, an MX7574 CMOS ADC uses an MX584,

connected for -2.5V, as its reference input so that the

system can operate from ±5V power. The analog input

range for the circuit is 0V to +2.5V.

Chip Topography

0.087"

(2.209mm)

CAP

VBG

+VS

10.0V

5.0V

2.5V

STROBE

0.071"

(1.803mm)

COMMON

COMMON

Chip Information

TRANSISTOR COUNT: 72

SUBSTRATE CONNECTED TO GND

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