DAC8552

Part: DAC8552 — Texas Instruments

Type: 16-Bit Dual Channel Voltage Output DAC

Description: 16-bit, dual channel, ultra-low glitch (0.15 nV-s) voltage output DAC with 2.7–5.5 V supply, rail-to-rail output buffers, 4 LSB typical relative accuracy and a 30 MHz SPI-compatible 3-wire interface.

Operating Conditions:

• Supply voltage: 2.7–5.5 V
• Operating temperature: -40 to +105 °C
• Reference input range: 0 to VDD V
• Maximum SCLK frequency: 30 MHz (VDD = 3.6–5.5 V), 20 MHz (VDD = 2.7–3.6 V)

Absolute Maximum Ratings:

• Max supply voltage: VDD to GND -0.3 V to 6 V
• Digital input voltage: -0.3 V to VDD + 0.3 V
• VOUTA/VOUTB to GND: -0.3 V to VDD + 0.3 V
• Max junction temperature: +150 °C
• Storage temperature: -65 to +150 °C

Key Specs:

• Resolution: 16 bits, monotonic; DNL ±0.35 LSB typ (±1 LSB max)
• Relative accuracy: ±4 LSB typ, ±12 LSB max
• Zero code error: ±2.5 mV typ, ±12 mV max; gain error ±0.08 % FSR typ, ±0.2 % FSR max
• Settling time: 8 μs typ, 10 μs max (to ±0.003% FSR, RL = 2 kΩ, 0–200 pF)
• Slew rate: 1.8 V/μs; code change glitch impulse 0.15 nV-s
• AC crosstalk: -100 dB; SNR 95 dB, THD -85 dB (VDD = 5 V, fOUT = 1 kHz)
• IDD normal mode: 340 μA typ, 500 μA max (VDD = 3.6–5.5 V, no load, excludes reference current)
• IDD power-down: 0.7 μA typ, 2 μA max (VDD = 3.6–5.5 V)
• Reference input impedance: 62 kΩ; reference current 90 μA typ (VREF = VDD = 5.5 V)

Features:

• Power-on reset to zero-scale
• On-chip rail-to-rail output buffer amplifiers
• Double-buffered input architecture
• Simultaneous or sequential output update and power-down
• Low-power serial interface with Schmitt-triggered inputs
• Compatible with SPI, QSPI, Microwire and most DSPs
• Flexible power-down via serial interface

Applications:

• Portable instrumentation
• Closed-loop servo control
• Process control
• Data acquisition systems
• Programmable attenuation
• PC peripherals

Package:

• MSOP-8 (DGK)

• Portable Instrumentation
• Closed-Loop Servo Control
• Process Control
• Data Acquisition Systems
• Programmable Attenuation
• PC Peripherals

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

SPI, QSP are trademarks of Motorola, Inc.

Microwire is a trademark of National Semiconductor.

All other trademarks are the property of their respective owners.

The DAC8552 is a 16-bit, dual channel, voltage output digital-to-analog converter (DAC) offering low power operation and a flexible serial host interface. Each on-chip precision output amplifier allows rail-to-rail output swing to be achieved over the supply range of 2.7V to 5.5V. The device supports a standard 3-wire serial interface capable of operating with input data clock frequencies up to 30MHz for VDD = 5V.

The DAC8552 requires an external reference voltage to set the output range of each DAC channel. Also incorporated into the device is a power-on reset circuit which ensures that the DAC outputs power up at zero-scale and remain there until a valid write takes place. The DAC8552 provides a flexible power-down feature, accessed over the serial interface, that reduces the current consumption of the device to 700nA at 5V.

The low-power consumption of this device in normal operation makes it ideally suited for portable, battery-operated equipment and other low-power applications. The power consumption is 0.5mW per channel at 2.7V, reducing to 1 μ W in power-down mode.

The DAC8552 is available in a MSOP-8 package with a specified operating temperature range of -40 ° C to +105 ° C.

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

DGK PACKAGE MSOP-8 (Top View)

1

2

3

4

DAC8552

8

7

6

5

V

V

V

V

B

A

DD

REF

OUT

OUT

GND

D

SCLK

SYNC

IN

VDD = 2.7V to 5.5V, all specifications -40 ° C to +105 ° C (unless otherwise noted).

over operating free-air temperature range (unless otherwise noted). (1)

In addition, the DAC8552 can achieve typical ac performance of 96dB signal-to-noise ratio (SNR) and -85dB total harmonic distortion (THD), making the DAC8552 a solid choice for applications requiring high SNR at output frequencies at or below 10kHz.