POWER-ON

RESET

DAC

REGISTER

INPUT

CONTROL

LOGIC

12-BIT DAC

12

12

POWER-DOWN

CONTROL

LOGIC

BUFFER

1k

100k

SCLK

SYNC

REF(+) REF(-)

GND

DAC121S101

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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

3 Description

The DAC121S101 device is a full-featured, general-

1

•

DAC121S101-Q1 is AEC-Q100 Grade 1 Qualified

purpose,

12-bit

voltage-output

digital-to-analog

and is Manufactured on an Automotive Grade

converter (DAC) that can operate from a single 2.7-V

Flow.

to 5.5-V supply and consumes just 177 µA of current

•

Ensured Monotonicity

at 3.6 V. The on-chip output amplifier allows rail-to-

rail output swing and the three wire serial interface

•

Low Power Operation

operates at clock rates up to 30 MHz over the

•

Rail-to-Rail Voltage Output

specified supply voltage range and is compatible with

•

Power-on Reset to Zero Volts Output

standard

SPI™,

QSPI,

MICROWIRE

and

DSP

•

Wide Temperature Range of

−40°C to +125°C

interfaces. Competitive devices are limited to 20-MHz

clock rates at supply voltages in the 2.7 V to 3.6 V

•

Wide Power Supply Range of 2.7 V to 5.5 V

range.

•

Small Packages

The supply voltage for the DAC121S101 serves as its

•

Power Down Feature

voltage reference, providing the widest possible

•

Key Specifications

output dynamic range. A power-on reset circuit

–

12-Bit Resolution

ensures that the DAC output powers up to zero volts

and remains there until there is a valid write to the

–

DNL -0.15, +0.25 LSB (Typical)

device.

A

power-down

feature

reduces

power

–

8-µs Output Settling Time (Typical)

consumption to less than a microWatt.

–

4-mV Zero Code Error (Typical)

The low power consumption and small packages of

–

Full-Scale Error at

−0.06 %FS (Typical)

the DAC121S101 make it an excellent choice for use

–

0.64-mW (3.6-V) / 1.43-mW (5.5-V) Normal

in battery operated equipment.

Mode Power Consumption (Typical)

Device Information(1)

–

0.14-µW (3.6-V) / 0.39-µW (5.5-V) Power-

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Down Mode (Typical)

SOT (6)

2.90 mm × 1.60 mm

DAC121S101

2 Applications

VSSOP (8)

3.00 mm × 3.00 mm

DAC121S101-Q1

SOT (6)

2.90 mm × 1.60 mm

•

Battery-Powered Instruments

(1) For all available packages, see the orderable addendum at

•

Digital Gain and Offset Adjustment

the end of the data sheet.

•

Programmable Voltage and Current Sources

•

Programmable Attenuators

•

Automotive

Simplified Block Diagram

DNL vs. Output Code

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.