AD5737:Quad Channel, 12-Bit, Serial Input, 4-20mA Output DAC with Dynamic Power Control and HART Connectivity

AD5737: Quad Channel, 12-Bit, Serial Input, 4-20mA Output DAC with Dynamic Power Control and HART Connectivity

AD5737 功能框图 The AD5737 is a quad-channel current output DAC designed to meet the requirements of industrial process control applications, being a fully integrated single-chip solution for generating current loop outputs. The output configuration is user-selectable.On-chip dynamic power control is incorporated on-chip to minimize package power dissipation in current mode. This reduced power dissipation is achieved by regulating the voltage on the output driver from 7.4 V to 29.5 V using a dc-to-dc boost converter optimized for minimum on-chip power dissipation.The AD5737 features on-chip diagnostics designed to detect if the current outputs going open loop or have insufficient power supply voltage and/or an over-temperature alert. The serial interface also features optional CRC-8 packet error checking, as well as a watchdog timer that monitors activity on the interface. The AD5737 is equipped with a FAULT pin to signal the occurrence of anyone of the fault conditions. The AD5737 also provides user configurable offset and gain registers which enable the removal of overall system errors without compromising resolution, thereby increasing the accuracy of the complete solution. The AD5737 is an ideal solution for multi-channel current output modules which require user configurability or flexibility in end-system parameters. For a 16 bit equivalent solution, look at the AD5757. For a voltage and current configurable version, see the AD5755, AD5755-1 or AD5735.

AD5737 特点

12-Bit Resolution and Monotonicity
Dynamic Power Control for Thermal Management or external PMOS mode
IOUT Range: 0mA-20mA, 4mA–20mA or 0mA–24mA
±0.1% (TUE) Maximum
User programmable Offset and Gain
On-Chip Diagnostics
On-Chip Reference: ±10 ppm/°C maximum
−40°C to +105°C Temperature Range

AD5737 建议配套产品

Recommended External 5V References for the AD5737

For high accuracy, low noise, low temperature drift, we recommend the ADR435 or the ADR445.

For precision, low cost, wide supply, small package, we recommend the ADR02.

Recommended Digital Isolators for the AD5737

For a low cost, quad channel, up to 10 Mbps data rate, we recommend the ADuM1410 or the ADuM1411.

For higher data rates: dc to 90 Mbps, we recommend the ADuM1400.

Recommended Switching DC-DC Regulators for the AD5737

For a high voltage, buck regulator with integrated power MOSFET, we recommend the ADP2302 or ADP2303.

Recommended Power Solutions

For selecting voltage regulator products, use ADIsimPower.

For selecting supervisor products, use the Supervisor Parametric Search.

AD5737 技术指标

Resolution (Bits): 12bit
DAC Settling Time: 15µs
Positive Supply (max): +33V
Single-Supply: No
DAC Type: Current Out
DAC Input Format: Ser,SPI

AD5737 亮点

Dynamic power control for thermal management.
12-bit performance.
Quad channel.
HART compliant.

AD5737 应用领域

Process control
Actuator Control
PLCs
HART Network Connectivity

AD5737 芯片订购指南

产品型号	封装	引脚	温度范围	包装和数量	报价*(100-499)	报价*1000 pcs
AD5737ACPZ 产品状态: 量产	64 ld LFCSP (9x9mm, 7.10 exposed pad)	64	工业	Tray, 260	$ 10.89	$ 8.93
AD5737ACPZ-RL7 产品状态: 量产	64 ld LFCSP (9x9mm, 7.10 exposed pad)	64	工业	Reel, 750	-	-