DAC7551-Q1_15 Datasheet, PDF (1/27 Pages) Texas Instruments – 12-Bit, Ultra-Low Glitch, Voltage Output Digital-to-Analog Converter

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DAC7551-Q1
SLAS767B – JUNE 2011 – REVISED MARCH 2015
DAC7551-Q1 12-Bit, Ultra-Low Glitch, Voltage Output
Digital-to-Analog Converter
1 Features
•1 Qualified for Automotive Applications
• Relative Accuracy (INL): ±0.35 LSB
• Ultra-Low Glitch Energy: 0.1 nV-s
• Low-Power Operation: 100 μA at 2.7 V
• Power-On Reset-to-Zero Scale
• Power Supply: 2.7- to 5.5-V Single Supply
• Power-Down: 0.05 μA at 2.7 V
• 12-Bit Linearity and Monotonicity
• Rail-to-Rail Voltage Output
• Settling Time: 5 μs (Max)
• SPI-Compatible Serial Interface With Schmitt-
Trigger Input: Up to 50 MHz
• Daisy-Chain Capability
• Asynchronous Hardware Clear-to-Zero Scale
• Specified Temperature Range:
–40°C to +105°C
• Small, 2-mm × 3-mm, 12-Lead USON Package
• Z-Suffix Offers Improved Delamination
2 Applications
• Portable, Battery-Powered Instruments
• Digital Gain and Offset Adjustment
• Programmable Voltage and Current Sources
• Programmable Attenuators
• Industrial Process Control
• ADAS Radar Applications
• Collision Warning
• Blind-Spot Detection
3 Description
The DAC7551-Q1 device is a single-channel, voltage-
output digital-to-analog converter (DAC) with
exceptional linearity and monotonicity, and a
proprietary architecture that minimizes glitch energy.
The low-power DAC7551-Q1 device operates from a
single 2.7- to 5.5-V supply. The DAC7551-Q1 output
amplifiers can drive a 2-kΩ, 200-pF load rail-to-rail
with 5-μs settling time. The output range is set using
an external voltage reference.
The 3-wire serial interface operates at clock rates up
to 50 MHz and is compatible with SPI™, QSPI™,
microwire, and DSP interface standards. The device
incorporates a power-on-reset (POR) circuit to ensure
that the DAC output powers up to 0 V and remains at
that voltage until a valid write cycle to the device
occurs. The device contains a power-down feature
that reduces the current consumption of the device to
under 2 μA.
Small size and low-power operation make the
DAC7551-Q1 device ideally suited for battery-
operated, portable applications. The power
consumption is typically 0.5 mW at 5 V, 0.23 mW at
3 V, and reduces to 1 μW in power-down mode.
The DAC7551-Q1 device is available in a 12-pin
USON package and is specified over –40°C to
+105°C. The Z-suffix offers reduced delamination
compared to standard device.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DAC7551-Q1
USON (12)
2.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Functional Block Diagram
V_DD
IOV_DD
V_REFH
SCLK
SYNC
SDIN
Interface
Logic
_
Shift
DAC
String
Register
Register
DAC
+
SDO CLR
Power-On
Reset
GND
Power-Down
Logic
V_REFL
V_FB
V_OUT
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.