DAC121S101_15 Datasheet, PDF (1/37 Pages) Texas Instruments – 12-Bit Micro Power, RRO Digital-to-Analog Converter

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DAC121S101, DAC121S101-Q1
SNAS265J – JUNE 2005 – REVISED SEPTEMBER 2015
DAC121S101/-Q1 12-Bit Micro Power, RRO Digital-to-Analog Converter
1 Features
•1 DAC121S101-Q1 is AEC-Q100 Grade 1 Qualified
and is Manufactured on an Automotive Grade
Flow.
• Ensured Monotonicity
• Low Power Operation
• Rail-to-Rail Voltage Output
• Power-on Reset to Zero Volts Output
• Wide Temperature Range of −40°C to +125°C
• Wide Power Supply Range of 2.7 V to 5.5 V
• Small Packages
• Power Down Feature
• Key Specifications
– 12-Bit Resolution
– DNL -0.15, +0.25 LSB (Typical)
– 8-µs Output Settling Time (Typical)
– 4-mV Zero Code Error (Typical)
– Full-Scale Error at −0.06 %FS (Typical)
– 0.64-mW (3.6-V) / 1.43-mW (5.5-V) Normal
Mode Power Consumption (Typical)
– 0.14-µW (3.6-V) / 0.39-µW (5.5-V) Power-
Down Mode (Typical)
2 Applications
• Battery-Powered Instruments
• Digital Gain and Offset Adjustment
• Programmable Voltage and Current Sources
• Programmable Attenuators
• Automotive
3 Description
The DAC121S101 device is a full-featured, general-
purpose, 12-bit voltage-output digital-to-analog
converter (DAC) that can operate from a single 2.7-V
to 5.5-V supply and consumes just 177 µA of current
at 3.6 V. The on-chip output amplifier allows rail-to-
rail output swing and the three wire serial interface
operates at clock rates up to 30 MHz over the
specified supply voltage range and is compatible with
standard SPI™, QSPI, MICROWIRE and DSP
interfaces. Competitive devices are limited to 20-MHz
clock rates at supply voltages in the 2.7 V to 3.6 V
range.
The supply voltage for the DAC121S101 serves as its
voltage reference, providing the widest possible
output dynamic range. A power-on reset circuit
ensures that the DAC output powers up to zero volts
and remains there until there is a valid write to the
device. A power-down feature reduces power
consumption to less than a microWatt.
The low power consumption and small packages of
the DAC121S101 make it an excellent choice for use
in battery operated equipment.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DAC121S101
SOT (6)
VSSOP (8)
2.90 mm × 1.60 mm
3.00 mm × 3.00 mm
DAC121S101-Q1 SOT (6)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Block Diagram
VA
GND
DNL vs. Output Code
POWER-ON
RESET
DAC121S101
DAC
REGISTER
12
12
INPUT
CONTROL
LOGIC
REF(+) REF(-)
12-BIT DAC
BUFFER
POWER-DOWN
CONTROL
LOGIC
VOUT
1k
100k
SYNC
SCLK
DIN
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.