IC 20-BIT MONOLITHIC D/A 16-QSOP

DAC1220E

Manufacturer Part NumberDAC1220E
DescriptionIC 20-BIT MONOLITHIC D/A 16-QSOP
ManufacturerTexas Instruments
DAC1220E datasheet
 


Specifications of DAC1220E

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-QSOPResolution20 bit
Interface TypeSerial (2-Wire, 3-Wire, SPI)Supply Voltage (max)5.25 V
Supply Voltage (min)4.75 VMaximum Operating Temperature+ 85 C
Mounting StyleSMD/SMTMinimum Operating Temperature- 40 C
For Use With296-17265 - MODULE EVALUATION FOR DAC1220Lead Free Status / RoHS StatusLead free / RoHS Compliant
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DAC1220
SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER
BIT(S)
NAME
VALUE
15
ADPT
14
CALPIN
13
Reserved
12
Reserved
11
Reserved
10
Reserved
9
CRST
8
Reserved
7
RES
6
CLR
5
DF
4
DISF
3
BD
16
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2009......................................................................................................................................
Table 13. Command Register Bits
Controls adaptive filtering. if DISF is set, this bit has no effect.
0
Adaptive filtering enabled (default).
1
Adaptive filtering disabled.
0
Output is disconnected (high impedance) during calibration (default).
1
Output is connected during calibration.
Write '1' to this bit. On early versions of the device, this bit is writable and
defaults to zero, but still should be set to '1'. On current devices this bit is read-
only and always reads '1'. See the
Read-only. Always '0'.
Read-only. Always '0'.
Read-only. Always '0'.
In Normal mode, writing '1' to this bit resets the calibration registers, setting
OCR to 000000h and FCR to 800000h. In Normal mode, this bit always reads
'0'.
In Sleep mode, this bit is read/write, and has no effect.
Writing '1' to this bit and switching to Normal mode at the same time will reset
the calibration registers.
0
Do not clear calibration registers.
1
Clear calibration registers.
Read-only. Always '0'.
Selects resolution.
0
16-bit resolution (default).
1
20-bit resolution.
In Normal mode, writing '1' to this bit writes 0 to the data register.
In Sleep mode, this bit is read/write, and has no effect.
Writing '1' to this bit and switching to Normal mode at the same time will reset
the data register.
The actual voltage that the DAC1220 will output on setting this bit depends on
the data format selected by DF. If DF is 1, zero gives 0V; if DF is 0, zero gives
V
(mid-scale).
REF
0
Do not clear calibration registers.
1
Clear calibration registers.
Selects binary number format of the data register.
0
Offset two's complement (default).
1
Straight binary.
Can be used to inhibit fast settling and/or adaptive filtering. See text for details.
0
Fast settling and/or adaptive filtering enabled (default).
1
Fast settling disabled; filter always at default cutoff.
Selects address increment or decrement when reading or writing multiple bytes,
except when writing to the command register. The command register is always
written to in increment mode (most significant byte first). 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