AD5755_11 Datasheet, PDF (1/48 Pages) Analog Devices – Quad Channel, 16-Bit, Serial Input, 4 mA to 20 mA and Voltage Output DAC, Dynamic Power Control

Quad Channel, 16-Bit, Serial Input,
4 mA to 20 mA and Voltage Output DAC,
Dynamic Power Control
AD5755
FEATURES
16-bit resolution and monotonicity
Dynamic power control for thermal management
Current and voltage output pins connectable to a single
terminal
Current output ranges: 0 mA to 20 mA, 4 mA to 20 mA,
or 0 mA to 24 mA
±0.05% total unadjusted error (TUE) maximum
Voltage output ranges (with 20% overrange): 0 V to 5 V, 0 V
to 10 V, ±5 V, and ±10 V
±0.04% total unadjusted error (TUE) maximum
User programmable offset and gain
On-chip diagnostics
On-chip reference (±10 ppm/°C maximum)
−40°C to +105°C temperature range
APPLICATIONS
Process control
Actuator control
PLCs
GENERAL DESCRIPTION
The AD5755 is a quad, voltage and current output DAC that
operates with a power supply range from −26.4 V to +33 V.
On-chip dynamic power control minimizes package power
dissipation in current mode. This 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 part uses a versatile 3-wire serial interface that operates at
clock rates of up to 30 MHz and is compatible with standard
SPI, QSPI™, MICROWIRE™, DSP, and microcontroller inter-
face standards. The interface also features optional CRC-8
packet error checking, as well as a watchdog timer that
monitors activity on the interface.
PRODUCT HIGHLIGHTS
1. Dynamic power control for thermal management.
2. 16-bit performance.
3. Multichannel.
COMPANION PRODUCTS
Product Family: AD5755-1, AD5757
External References: ADR445, ADR02
Digital Isolators: ADuM1410, ADuM1411
Power: ADP2302, ADP2303
Additional companion products on the AD5755 product page
FUNCTIONAL BLOCK DIAGRAM
AV_CC
5.0V
AV_SS
AV_DD
–15V AGND +15V
SW_x
V_{BOOST_x}
DV_DD
DGND
LDAC
SCLK
SDIN
SYNC
SDO
CLEAR
FAULT
ALERT
AD1
AD0
REFOUT
REFIN
DIGITAL
INTERFACE
REFERENCE
AD5755
+
GAIN REG A
OFFSET REG A
DAC CHANNEL A
DAC CHANNEL B
DAC CHANNEL C
DAC CHANNEL D
DC-TO-DC
CONVERTER
7.4V TO 29.5V
DAC A
CURRENT AND
VOLTAGE
OUTPUT RANGE
SCALING
I_{OUT_x}
R_{SET_x}
+V_{SENSE_x}
V_{OUT_x}
–V_{SENSE_x}
NOTES
1. x = A, B, C, AND D.
Figure 1.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone]
©2011 Analog Devices, Inc. All rights reserved.