400ksps/300ksps, Single-Supply, Low-Power,

Serial 10-Bit ADCs with Internal Reference

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7

2.490

2.496

2.494

2.492

2.498

2.500

2.502

2.504

2.506

2.508

2.510

2.5

3.5

3.0

4.0

4.5

5.0

5.5

INTERNAL REFERENCE VOLTAGE

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

2.490

2.496

2.494

2.492

2.500

2.498

2.508

2.506

2.504

2.502

2.510

-40

-20

0

20

40

60

80

100

INTERNAL REFERENCE VOLTAGE

vs. TEMPERATURE

TEMPERATURE (°C)

1.50

2.00

1.75

2.50

2.25

2.75

3.00

2.5

3.5

4.0

3.0

4.5

5.0

5.5

SUPPLY CURRENT vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

CONVERTING,

SCLK = 6.4MHz

CONVERTING,

SCLK = 4.8MHz

STATIC

CODE = 1111 1111 1111

∞

1.5

1.8

2.4

2.1

2.7

3.0

-40

0

-20

20

40

60

80

100

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (

°C)

Typical Operating Characteristics (continued)

Pin Description

Serial Clock Input. SCLK drives the conversion process and clocks data out at rates up to 6.4MHz

(MAX1084) or 4.8MHz (MAX1085).

PIN

Positive Supply Voltage

1

FUNCTION

NAME

AIN

2

Analog and Digital Ground

GND

5

Active-Low Chip Select. Initiates conversions on the falling edge. When CS is high, DOUT is high

impedance.

CS

7

Reference Voltage for Analog-to-Digital Conversion. Internal 2.5V reference output. Bypass with a

4.7µF capacitor.

REF

4

Active-Low Shutdown Input. Pulling SHDN low shuts down the device and reduces the supply current

to 2µA (typ).

SHDN

3

SCLK

8

Serial Data Output. DOUT changes state at SCLK’s rising edge. High impedance when CS is high.

DOUT

6