DAC161P997 datasheet(7/39 Pages) TI

Nome de Peças	DAC161P997

Descrição Electrónicos	DAC161P997 Single-Wire 16-bit DAC for 4- to 20-mA Loops

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Fabricante Electrônico	TI [Texas Instruments]

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THD

TH1

TP

pri_tx:

³0´

pri_tx:

³1´

pri_tx:

³'´

ACKB:

³$´

TP

TB

TH0

TA

DAC161P997

www.ti.com

SNAS515G – JULY 2011 – REVISED DECEMBER 2014

Electrical Characteristics (continued)

Unless otherwise noted, these specifications apply for VA = VD = 2.7 V to 3.6 V, TA = 25°C, external bipolar transistor:

2N3904, RE = 22Ω, C1 = C2 = C3 = 2.2 nF.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Leakage current when output device

ACKB

is off

1

-40 to 105°C

IOZ

µA

Leakage current when output device

ERRB

is off

1

-40 to 105°C

6.6 Timing Requirements

MIN

NOM

MAX

UNIT

SWIF TIMING, INTERNAL TIMER

Symbol rate: 1/TP

0.3

19.2

kHz

“D” symbol duty cycle: THD/TP

7/16

1/2

9/16

“0” symbol duty cycle: TH0/TP

3/16

1/4

5/16

"1” symbol duty cycle: TH1/TP

11/16

3/4

13/16

ACKB assert: TA/TP

1/16

1/4

4/8

ACKB deassert: TB/TP

12/8

7/4

31/16

TM

Timeout PeriodM

90

100

110

ms

Figure 1. Single-Wire Interface (SWIF) Timing Diagram

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Product Folder Links: DAC161P997

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