MAX5156BEEE Просмотр технического описания (PDF) - Maxim Integrated

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MAX5156BEEE

Low-Power, Dual, 12-Bit Voltage-Output DACs with Configurable Outputs

Maxim Integrated 

Low-Power, Dual, 12-Bit Voltage-Output DACs

with Configurable Outputs

CS

SCLK

DIN

1

8

A0 C1 C0 D11 D10 D9 D8 D7

9

16

D6 D5 D4 D3 D2 D1 D0 S0

COMMAND

EXECUTED

Figure 5. Serial-Interface Timing Diagram

CS

SCLK

DIN

tCSO

tCSS

tDS tDH

tCH

tCL

Figure 6. Detailed Serial-Interface Timing Diagram

tCSW

tCP

tCSH

tCS1

SCLK

MAX5156

MAX5157

DIN

DOUT

CS

SCLK

MAX5156

MAX5157

DIN

DOUT

CS

SCLK

MAX5156

MAX5157

DIN

DOUT

CS

TO OTHER

SERIAL DEVICES

Figure 7. Daisy Chaining MAX5156/MAX5157s

Daisy Chaining Devices

Any number of MAX5156/MAX5157s can be daisy

chained by connecting the DOUT pin of one device to the

DIN pin of the following device in the chain (Figure 7).

Since the MAX5156/MAX5157’s DOUT has an internal

active pull-up, the DOUT sink/source capability deter-

mines the time required to discharge/charge a capaci-

tive load. Refer to the digital output VOH and VOL speci-

fications in the Electrical Characteristics.

Figure 8 shows an alternative method of connecting

several MAX5156/MAX5157s. In this configuration, the

data bus is common to all devices; data is not shifted

through a daisy-chain. More I/O lines are required in

this configuration because a dedicated chip-select

input (CS) is required for each IC.

12 ______________________________________________________________________________________

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