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Dual 12-/14-/16-Bit nanoDAC with
5 ppm/°C On-Chip Reference
Data Sheet
AD5623R/AD5643R/AD5663R
Rev. G Document Feedback
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FEATURES
Low power, smallest pin-compatible, dual nanoDAC
AD5663R: 16 bits
AD5643R: 14 bits
AD5623R: 12 bits
User-selectable external or internal reference
External reference default
On-chip 1.25 V/2.5 V, 5 ppm/°C reference
10-lead MSOP and 3 mm × 3 mm LFCSP
2.7 V to 5.5 V power supply
Guaranteed monotonic by design
Power-on reset to zero scale
Per channel power-down
Serial interface up to 50 MHz
Hardware
LDAC
and
CLR
functions
APPLICATIONS
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
FUNCTIONAL BLOCK DIAGRAM
INTERFACE
LOGIC
SCLK
SYNC
DIN
CLR
INPUT
REGISTER
INPUT
REGISTER
DAC
REGISTER
DAC
REGISTER
V
DD
GND
POWER-ON
RESET
STRING
DAC A
STRING
DAC B
BUFFER
BUFFER
V
REFIN
/
V
REFOUT
POWER-DOWN
LOGIC
V
OUT
A
V
OUT
B
AD5623R/AD5643R/AD5663R
LDAC
LDAC
05858-001
1.25V/2.5V
REFERENCE
Figure 1.
Table 1. Related Devices
Part No. Description
AD5663
2.7 V to 5.5 V, dual 16-bit nanoDAC, with external
reference
GENERAL DESCRIPTION
The AD5623R/AD5643R/AD5663R, members of the nanoDAC®
family, are low power, dual 12-, 14-, and 16-bit buffered voltage-
out digital-to-analog converters (DAC) that operate from a single
2.7 V to 5.5 V supply and are guaranteed monotonic by design.
The AD5623R/AD5643R/AD5663R have an on-chip reference.
The AD5623R-3/AD5643R-3/AD5663R-3 have a 1.25 V,
5 ppm/°C refe
rence, giving a full-scale output of 2.5 V; and the
AD5623R-5/AD5643R-5/AD5663R-5 have a 2.5 V, 5 ppm/°C
reference, giving a full-scale output of 5 V. The on-chip
reference is off at power-up, allowing the use of an external
reference; and all devices can be operated from a single 2.7 V to
5.5 V supply. The internal reference is turned on by writing to
the DAC.
The parts incorporate a power-on reset circuit that ensures the
DAC output powers up to 0 V and remains there until a valid
write takes place. The part contains a power-down feature that
reduces the current consumption of the device to 480 nA at 5 V
and provides software-selectable output loads while in power-
down mode.
The low power consumption of this part in normal operation
makes it ideally suited to portable, battery-operated equipment.
The AD5623R/AD5643R/AD5663R use a versatile, 3-wire serial
interface that operates at clock rates up to 50 MHz, and they are
compatible with standard SPI®, QSPI™, MICROWIRE™, and
DSP interface standards. The on-chip precision output amplifier
enables rail-to-rail output swing to be achieved.
PRODUCT HIGHLIGHTS
1. Dual 12-, 14-, and 16-bit DAC.
2. On-chip 1.25 V/2.5 V, 5 ppm/°C reference.
3. Available in 10-lead MSOP and 10-lead, 3 mm ×
3 mm LFCSP.
4. Low power; typically consumes 0.6 mW at 3 V and
1.25 mW at 5 V.
5. 4.5 μs maximum settling time for the AD5623R.
Verzeichnis
- ・ Konfiguration des Pinbelegungsdiagramms on Seite 10 Seite 29
- ・ Abmessungen des Paketumrisses on Seite 29
- ・ Teilenummerierungssystem on Seite 30
- ・ Blockdiagramm on Seite 1
- ・ Schweißen Temperatur on Seite 9
- ・ Beschreibung der Funktionen on Seite 1 Seite 10 Seite 29
- ・ Technische Daten on Seite 1 Seite 4 Seite 9
- ・ Anwendungsbereich on Seite 1 Seite 27
- ・ Elektrische Spezifikation on Seite 11
