IC 20-BIT MONO LP D/A 16-QSOP

DAC1220E/2K5

Manufacturer Part NumberDAC1220E/2K5
DescriptionIC 20-BIT MONO LP D/A 16-QSOP
ManufacturerTexas Instruments
DAC1220E/2K5 datasheet
 


Specifications of DAC1220E/2K5

Settling Time1.8msNumber Of Bits20
Data InterfaceSerialNumber Of Converters1
Voltage Supply SourceAnalog and DigitalPower Dissipation (max)3.5mW
Operating Temperature-40°C ~ 85°CMounting TypeSurface Mount
Package / Case16-QSOPNumber Of Channels1
Resolution20bConversion Rate0.5KSPS
Interface TypeSerial (2-Wire, 3-Wire, SPI)Single Supply Voltage (typ)5V
Dual Supply Voltage (typ)Not RequiredVArchitectureDelta-Sigma
Power Supply RequirementAnalog and DigitalOutput TypeVoltage
Integral Nonlinearity Error±1LSBSingle Supply Voltage (min)4.75V
Single Supply Voltage (max)5.25VDual Supply Voltage (min)Not RequiredV
Dual Supply Voltage (max)Not RequiredVOperating Temp Range-40C to 85C
Operating Temperature ClassificationIndustrialMountingSurface Mount
Pin Count16Package TypeSSOP
For Use With296-17265 - MODULE EVALUATION FOR DAC1220Lead Free Status / RoHS StatusLead free / RoHS Compliant
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www.ti.com......................................................................................................................................
FEATURES
1
20-Bit Monotonicity Ensured Over –40°C to
2
+85°C
Low Power: 2.5mW
Voltage Output
Settling Time: 2ms to 0.012%
Maximum Linearity Error: ±0.0015%
On-Chip Calibration
APPLICATIONS
Process Control
ATE Pin Electronics
Closed-Loop Servo Control
Smart Transmitters
Portable Instruments
X
IN
Clock Generator
Microcontroller
Instruction Register
Command Register
Data Register
Offset Register
Full−Scale Register
Serial
SDIO
Interface
SCLK
CS
1
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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
20-Bit, Low-Power
Digital-to-Analog Converter
Check for Samples:
DAC1220
DESCRIPTION
The DAC1220 is a 20-bit digital-to-analog (D/A)
converter offering 20-bit monotonic performance over
the
specified
delta-sigma technology to achieve inherently linear
performance in a small package at very low power.
The resolution of the device can be programmed to
20 bits for Full-Scale, settling to 0.003% within 15ms
typical, or 16 bits for Full-Scale, settling to 0.012%
within 2ms max. The output range is two times the
external
circuitry dramatically reduces low offset and gain
errors.
The
DAC1220
interface; in single-converter applications, the serial
interface can be accomplished with just two wires,
allowing low-cost isolation. For multiple converters, a
CS signal allows for selection of the appropriate D/A
converter.
The DAC1220 has been designed for closed-loop
control applications in the industrial process control
market and high-resolution applications in the test
and measurement market. It is also ideal for remote
applications,
isolated systems. The DAC1220 is available in an
SSOP-16 package.
X
V
OUT
REF
2nd−Order
1st−Order
Switched
Modulator
Capacitor Filter
Modulator Control
DV
DGND
DD
SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009
temperature
range.
It
reference
voltage.
On-chip
features
a
synchronous
battery-powered
instruments,
AV
AGND
DD
C
1
2nd−Order
Continuous
V
OUT
Time Post Filter
C
2
Copyright © 1998–2009, Texas Instruments Incorporated
DAC1220
utilizes
calibration
serial
and

DAC1220E/2K5 Summary of contents

  • Page 1

    ... Modulator Control DV DGND DD SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 temperature range. It reference voltage. On-chip features a synchronous battery-powered instruments, AV AGND 2nd−Order Continuous V OUT Time Post Filter C 2 Copyright © 1998–2009, Texas Instruments Incorporated DAC1220 utilizes calibration serial and ...

  • Page 2

    ... DAC1220 SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 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 ...

  • Page 3

    ... Outside of this range, settling time can be twice the value indicated. DD For 16-bit mode 2.2nF 0.22nF; for 20-bit mode Copyright © 1998–2009, Texas Instruments Incorporated SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 = +5V 2.5MHz +2.5V, and 16-bit mode, unless otherwise noted. DD XIN ...

  • Page 4

    ... Filter capacitor (see text) Filter capacitor (see text) Analog output voltage Reference input Analog ground Chip-select input Serial data input/output Clock input for serial data transfer Copyright © 1998–2009, Texas Instruments Incorporated Product Folder Link(s): DAC1220 www.ti.com DAC1220E TYP MAX UNIT 140 μ ...

  • Page 5

    ... FREQUENCY 10k 1k 100 100 1k 10k Frequency (Hz) Figure 3. Copyright © 1998–2009, Texas Instruments Incorporated SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 TYPICAL CHARACTERISTICS = 2.5MHz 2.5V 2.2nF, and calibrated mode, unless otherwise XIN REF 1 specified. LARGE-SIGNAL SETTLING TIME 5.0 4.5 4.0 3 ...

  • Page 6

    ... C 1 Figure 5. DAC1220 Schematic Product Folder Link(s): DAC1220 www.ti.com system of the DAC1220 voltage using an REF correction is done against . REF Figure 5. SPI CLOCK SPI DATA From Chip Select or Ground +2.5V from Voltage Reference V OUT (2) 1 Copyright © 1998–2009, Texas Instruments Incorporated an ...

  • Page 7

    ... Voltage Reference The voltage reference input is designed for +2.5V. At this voltage, the output will range from ground to approximately 5V, as noted above. Copyright © 1998–2009, Texas Instruments Incorporated SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 Digital Connections . The digital lines, except for the crystal oscillator lines, REF operate at TTL-compatible CMOS logic levels ...

  • Page 8

    ... Digital DV DD Supply 5V Analog AV DD Supply Figure 6. Supply Sequence Protection Product Folder Link(s): DAC1220 www.ti.com and DV , the DD DD will not DD by more than a Schottky diode drop. SCLK Reset Pattern section for Copyright © 1998–2009, Texas Instruments Incorporated DD ...

  • Page 9

    ... SCLK falling edge to data in not valid (hold Data out valid to rising edge of SCLK (hold SCLK rising edge to new data out valid (delay) 8 Copyright © 1998–2009, Texas Instruments Incorporated SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 DIGITAL INTERFACE Figure 7 to Figure t XIN ...

  • Page 10

    ... XIN Product Folder Link(s): DAC1220 www.ti.com t 14 IN1 IN0 IN7 OUT1 OUT0 IN7 IN1 IN0 IN7 OUT1 OUT0 IN7 t 13 OUT0 SDIO is an output NOM MAX UNITS × XIN 4 × XIN 6 × XIN ns ns Copyright © 1998–2009, Texas Instruments Incorporated ...

  • Page 11

    ... Second high period 18 t Third high period 19 Copyright © 1998–2009, Texas Instruments Incorporated SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 SCLK Reset Pattern The DAC1220 does not have a dedicated reset pin. Instead, it contains a circuit which waits for a special Figure 10 ...

  • Page 12

    ... Number of bytes to read or write 00b 1 byte 01b 2 bytes 10b 3 bytes 11b Reserved; do not use 0–15 Start address in register map Product Folder Link(s): DAC1220 www.ti.com Table 11. The Data Input Register section for more information ADR DESCRIPTION Copyright © 1998–2009, Texas Instruments Incorporated ...

  • Page 13

    ... The value in the FCR is scaled and multiplicative. It has a linear relationship to the generated gain calibration multiplier. Copyright © 1998–2009, Texas Instruments Incorporated SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 Since the calibration functions are linear, calibration results can be averaged for greater precision. For ...

  • Page 14

    ... DAC1220 www.ti.com Table 13 for details). The two data Table Table 9. 16-BIT MODE code OUT REF 2 16 code OUT REF 2 16 (1) DIR CONTENT 8000xxh 0000xxh 80000xh 00000xh 0000xxh 8000xxh 00000xh 80000xh 7FFFxxh FFFFxxh 7FFFFxh FFFFFxh Copyright © 1998–2009, Texas Instruments Incorporated 8. ...

  • Page 15

    ... In early versions of the DAC1220, this bit was rw-0. See the RES CLR DF R/W-0 R/W-0 R/W-0 LEGEND Read Write Copyright © 1998–2009, Texas Instruments Incorporated SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 REGISTERS The register map is shown in Table 11. Register Memory Map ADDRESS 13. Table 12. Command Register 12 11 Reserved ...

  • Page 16

    ... Reads from the command register are according to this bit. 0 Address is incremented after each byte (default). 1 Address is decremented after each byte. Product Folder Link(s): DAC1220 www.ti.com DESCRIPTION Calibration section for details. Copyright © 1998–2009, Texas Instruments Incorporated ...

  • Page 17

    ... The value in the OCR becomes effective immediately upon entering Normal mode. Copyright © 1998–2009, Texas Instruments Incorporated SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 Selects the order in which bits are shifted in and out of the DAC1220, except when writing to the command register ...

  • Page 18

    ... The pattern is detected based on oscillator cycles will not be detected if the oscillator is not yet running. Product Folder Link(s): DAC1220 www.ti.com are a common problem Copyright © 1998–2009, Texas Instruments Incorporated in ...

  • Page 19

    ... Figure 13. Isolation for Two-Wire Interface Copyright © 1998–2009, Texas Instruments Incorporated SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 Full-Scale Range (FSR)—This is the magnitude of the typical analog output voltage range, which is 2 × For example, when the converter is configured REF with a 2 ...

  • Page 20

    ... Changes from Revision E (December 2007) to Revision F • Updated device graphic to TI logo ........................................................................................................................................ • Changed description of the 01b row in the 1-0 bits section of 20 Submit Documentation Feedback 2009...................................................................................................................................... REVISION HISTORY ................................................................................................. ............................................................................................ Table 13 ............................................................................ Copyright © 1998–2009, Texas Instruments Incorporated Product Folder Link(s): DAC1220 www.ti.com Page 10 Page 1 16 ...

  • Page 21

    ... Package Type Package Status DAC1220E ACTIVE SSOP/QSOP DAC1220E/2K5 ACTIVE SSOP/QSOP DAC1220E/2K5G4 ACTIVE SSOP/QSOP DAC1220EG4 ACTIVE SSOP/QSOP (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. ...

  • Page 22

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing DAC1220E/2K5 SSOP/ DBQ QSOP PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 16 2500 330.0 12.4 6.4 Pack Materials-Page 1 21-Sep-2009 Pin1 (mm) (mm) (mm) (mm) Quadrant 5.2 2 ...

  • Page 23

    ... Device Package Type DAC1220E/2K5 SSOP/QSOP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) DBQ 16 2500 Pack Materials-Page 2 21-Sep-2009 Width (mm) Height (mm) 346.0 346.0 29.0 ...

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    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...