MAX11044 datasheet(11/27 Pages) MAXIM

11 / 27 page

4-/6-/8-Channel, 16-/14-Bit,

Simultaneous-Sampling ADCs

Maxim Integrated

MAX11044/MAX11045/MAX11046/

MAX11054/MAX11055/MAX11056

Pin Description (continued)

MAX11044

(TQFN-EP)

MAX11045

(TQFN-EP)

MAX11046

(TQFN-EP)

NAME

FUNCTION

24, 30, 41, 47

AVDD

Analog Supply Input. Bypass AVDD to AGND with a

0.1µF capacitor at each AVDD input.

25, 31, 40, 46

AGND

Analog Ground. Connect all AGND inputs together.

CH0

Channel 0 Analog Input

CH1

Channel 1 Analog Input

CH2

Channel 2 Analog Input

CH3

Channel 3 Analog Input

REFIO

External Reference Input/Internal Reference Output.

Place a 0.1µF capacitor from REFIO to AGND.

—

CH4

Channel 4 Analog Input

—

CH5

Channel 5 Analog Input

—

CH6

Channel 6 Analog Input

—

CH7

Channel 7 Analog Input

Active-Low Write Input. Drive WR low to write to the

ADC. Configuration registers are loaded on the rising

edge of WR.

Active-Low Chip-Select Input. Drive CS low when

reading from or writing to the ADC.

Active-Low Read Input. Drive RD low to read from the

ADC. Each rising edge of RD advances the channel

output on the data bus.

DB15

16-Bit Parallel Data Bus Digital Output Bit 15

DB14

16-Bit Parallel Data Bus Digital Output Bit 14

26, 29, 42, 45

26, 45

—

I.C.

Internally Connected. Connect to AGND.

——

—

Exposed Pad. Internally connected to AGND. Connect to

a large ground plane to maximize thermal performance.

Not intended as an electrical connection point.

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