ADFS5758 datasheet(1/75 Pages) AD

Part #	ADFS5758

Description	Single-Channel, 16-Bit, Current/Voltage Output DAC, Functional Safety Approved for Unipolar Current Output

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Single-Channel, 16-Bit, Current/Voltage Output DAC,

Functional Safety Approved for Unipolar Current Output

Data Sheet

ADFS5758

Rev. 0

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FEATURES

Functional safety approved to SIL 2/SC3 for unipolar current

output by TÜV Rheinland, File Number 968/FSP

2055.00/20

Current/voltage output available on a single terminal

Current output ranges: 0 mA to 20 mA, 4 mA to 20 mA,

0 mA to 24 mA, ±20 mA, ±24 mA, −1 mA to +22 mA

Voltage output ranges (with 20% overrange): 0 V to 5 V,

0 V to 10 V, ±5 V, and ±10 V

Advanced on-chip diagnostics

12-bit ADC functioning as an independent monitoring

function that can validate the output and accuracy.

On-chip reference

DPC for thermal management

User-programmable offset and gain

Robust architecture, including output fault protection

EMC test standards

IEC 61000-4-6 conducted immunity (10 V, Class A)

IEC 61000-4-3 radiated immunity (20 V/m, Class A)

IEC 61000-4-2 ESD (±6 kV contact, Class B)

IEC 61000-4-4 electrical fast transient (EFT) (±4 kV, Class B)

IEC 61000-4-5 surge (±4 kV, Class B)

CISRP 11 radiated emissions (Class B)

32-lead, 5 mm × 5 mm LFCSP

−40°C to +105°C temperature range

APPLICATIONS

Process control

Actuator control

Channel isolated analog outputs

Programmable logic controller (PLC) and distributed control

system (DCS) applications

HART network connectivity

GENERAL DESCRIPTION

The ADFS5758 is a single-channel, 16-bit, current/voltage output

DAC. The device is functional safety approved for unipolar current

output and is a fully compliant item with a systematic capability of

SC3, which can be used in safety-related applications up to SIL 2,

according to IEC 61508. This arrangement allows a single

ADFS5758 to be used to achieve SIL 2 for a nonredundant

configuration. The safe state for the ADFS5758 is open circuit/high

impedance.

The ADFS5758 is a single-channel, voltage and current output

digital-to-analog converter (DAC) that operates with a power

supply range from −33 V minimum on AVSS to +33 V maximum

on AVDD1 with a maximum operating voltage between the two rails

of 60 V. On-chip dynamic power control (DPC) minimizes

package power dissipation, which is achieved by regulating the

supply voltage (VDPC+) to the VIOUT output driver circuitry from

4.95 V to 27 V using a buck dc-to-dc converter, optimized for

minimum on-chip power dissipation. The CHART pin enables a

HART® signal to be coupled onto the current output.

The device uses a versatile 4-wire serial peripheral interface (SPI)

that operates at clock rates of up to 50 MHz and is compatible with

standard SPI, QSPI™, MICROWIRE™, DSP, and microcontroller

interface standards. The interface also features an optional SPI

cyclic redundancy check (CRC) and a windowed watchdog timer.

The ADFS5758 offers improved diagnostic features from its

predecessors, such as an integrated independent 12-bit diagnostic

analog-to-digital converter (ADC) that can be used to digitize both

internal and external nodes.

PRODUCT HIGHLIGHTS

1. Functional safety approved to SIL 2/SC3 by TÜV Rheinland.

2. Range of advanced diagnostic features, including an

integrated ADC for high reliability.

3. DPC using an integrated buck dc-to-dc converter for thermal

management. When used with the ADP1031, the ADFS5758

enables eight channel to channel isolated outputs at <2 W

dissipated power.

4. Programmable power control (PPC) mode to enable faster

settling time (15 µs typical).

5. Highly robust with output protection from miswire events

(±38 V).

COMPANION PRODUCTS

Product Family: AD5755-1, AD5422, AD5758, AD5753, AD5423

HART Modem: AD5700, AD5700-1

External References: ADR431, ADR3425, ADR4525

Digital Isolators: ADuM142D, ADuM141D

Power: ADP1031, LT8300, ADP2360, ADM6339

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