|
|
PDF DAC8805 Data sheet ( Hoja de datos )
| Número de pieza | DAC8805 | |
| Descripción | Multiplying Digital-to-Analog Converter | |
| Fabricantes | Burr-Brown | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de DAC8805 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
|
No Preview Available !
BurrĆBrown Products
from Texas Instruments
DAC8805
DAC8805
SBAS391A – DECEMBER 2006 – REVISED MAY 2007
14-Bit, Dual, Parallel Input, Multiplying
Digital-to-Analog Converter
FEATURES
• ±0.5LSB DNL
• ±0.5LSB INL
• Low Noise: 12nV/√Hz
• Low Power: IDD = 1µA per channel at 2.7V
• 2mA Full-Scale Current, with VREF = 10V
• Settling Time: 0.5µs
• 14-Bit Monotonic
• 4-Quadrant Multiplying Reference Inputs
• Reference Bandwidth: 10MHz
• Reference Input: ±18V
• Reference Dynamics: –105 THD
• Midscale or Zero Scale Reset
• Analog Power Supply: +2.7V to +5.5V
• TSSOP-38 Package
• Industry-Standard Pin Configuration
• Pin Compatible with the 16-Bit DAC8822
• Temperature Range: –40°C to +125°C
APPLICATIONS
• Automatic Test Equipment
• Instrumentation
• Digitally Controlled Calibration
• Industrial Control PLCs
DGND VDD
D0
DESCRIPTION
The DAC8805 dual, multiplying digital-to-analog
converter (DAC) is designed to operate from a single
2.7V to 5.5V supply.
The applied external reference input voltage VREF
determines the full-scale output current. An internal
feedback resistor (RFB) provides temperature
tracking for the full-scale output when combined with
an external, current-to-voltage (I/V) precision
amplifier.
A RSTSEL pin allows system reset assertion (RS) to
force all registers to zero code when RSTSEL = '0',
or to mid-scale code when RSTSEL = '1'.
Additionally, an internal power-on reset forces all
registers to zero or mid-scale code at power-up,
depending on the state of the RSTSEL pin.
A parallel interface offers high-speed
communications. The DAC8805 is packaged in a
space-saving TSSOP-38 package and has an
industry-standard pinout. The device is specified
from –40°C to +125°C.
For a 16-bit, pin-compatible version, see the
DAC8822.
R1A RCOMA VREFA ROFSA
R1A
R2A
ROFSA
RFBA
RFBA
D13
WR
A0
A1
RS
LDAC
RSTSEL
Parallel
Bus
Interface
Input A
Register
Input B
Register
Control
Logic
Power-On
Reset
DAC A
Register
DAC B
Register
R1B
R2B
DAC A
DAC B
ROFSB RFBB
IOUTA
AGNDA
IOUTB
AGNDB
R1B RCOMB VREFB ROFSB
RFBB
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.
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.
Copyright © 2006–2007, Texas Instruments Incorporated
1 page  
www.ti.com
PIN #
1, 2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24-28, 30-38
29
NAME
NC
ROFSA
RFBA
R1A
RCOMA
VREFA
IOUTA
AGNDA
DGND
AGNDB
IOUTB
VREFB
RCOMB
R1B
RFBB
ROFSB
WR
A0
A1
LDAC
RSTSEL
RS
D0-D13
VDD
DAC8805
SBAS391A – DECEMBER 2006 – REVISED MAY 2007
PIN ASSIGNMENTS (continued)
Table 1. TERMINAL FUNCTIONS
DESCRIPTION
No connection
Bipolar Offset Resistor A. Accepts up to ±18V.
In 2-quadrant mode, ROFSA ties to RFBA.
In 4-quadrant mode, ROFSA ties to R1A and the external reference.
Internal Matching Feedback Resistor A. Connects to the external op amp for I-V conversion.
4-Quadrant Resistor.
In 2-quadrant mode, R1A shorts to the VREFA pin.
In 4-quadrant mode, R1A ties to ROFSA and the reference input.
Center Tap Point of the Two 4-Quadrant Resistors, R1A and R2A.
In 2-quadrant mode, RCOMA shorts to the VREF pin.
In 4-quadrant mode, RCOMA ties to the inverting node of the reference amplifier.
DAC A Reference Input in 2-Quadrant Mode, R2 Terminal in 4-Quadrant Mode.
In 2-quadrant mode, VREFA is the reference input with constant input resistance versus code.
In 4-quadrant mode, VREFA is driven by the external reference amplifier.
DAC A Current Output. Connects to the inverting terminal of external precision I-V op amp for voltage
output.
DAC A Analog Ground.
Digital Ground.
DAC B Analog Ground.
DAC B Current Output. Connects to the inverting terminal of external precision I-V op amp for voltage
output.
DAC B Reference Input in 2-Quadrant Mode, R2 Terminal in 4-Quadrant Mode.
In 2-quadrant mode, VREFB is the reference input with constant input resistance versus code.
In 4-quadrant mode, VREFB is driven by the external reference amplifier.
Center Tap Point of the Two 4-Quadrant Resistors, R1B and R2B.
In 2-quadrant mode, RCOMB shorts to the VREF pin.
In 4-quadrant mode, RCOMB ties to the inverting node of the reference amplifier.
4-Quadrant Resistor.
In 2-quadrant mode, R1B shorts to the VREFB pin.
In 4-quadrant mode, R1B ties to ROFSB and the reference input.
Internal Matching Feedback Resistor B. Connects to external op amp for I-V conversion.
Bipolar Offset Resistor B. Accepts up to ±18V.
In 2-quadrant mode, ROFSB ties to RFBB.
In 4-quadrant mode, ROFSB ties to R1B and the external reference.
Write Control Digital Input In, Active Low. WR enables input registers.
Signal level must be ≤ VDD + 0.3V.
Address 0. Signal level must be ≤ VDD + 0.3V.
Address 1. Signal level must be ≤ VDD + 0.3V.
Digital Input Load DAC Control. Signal level must be ≤ VDD + 0.3V. See the Function of Control Inputs
table for details.
Power-On Reset State.
RSTSEL = 0 corresponds to zero-scale reset.
RSTSEL = 1 corresponds to mid-scale reset.
The signal level must be ≤ VDD + 0.3V.
Reset. Active low resets both input and DAC registers.
Resets to zero-scale if RSTSEL= 0, and to mid-scale if RSTSEL = 1.
Signal level must be equal to or less than VDD + 0.3 V.
Digital Input Data Bits D0 to D13. Signal level must be ≤ VDD +0.3V. D13 is MSB.
Positive Power Supply Input. The specified range of operation is 2.7V to 5.5V.
Submit Documentation Feedback
5
5 Page 
www.ti.com
Channel A
DAC8805
SBAS391A – DECEMBER 2006 – REVISED MAY 2007
TYPICAL CHARACTERISTICS: VDD = +2.7V
LINEARITY ERROR
vs DIGITAL INPUT CODE
1.0
0.8 TA = +25°C
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
2048 4096 6144 8192 10240 12288 14336 16383
Code
Figure 18.
LINEARITY ERROR
vs DIGITAL INPUT CODE
1.0
0.8 TA = -40°C
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
2048 4096 6144 8192 10240 12288 14336 16383
Code
Figure 20.
LINEARITY ERROR
vs DIGITAL INPUT CODE
1.0
0.8 TA = +125°C
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
2048 4096 6144 8192 10240 12288 14336 16383
Code
Figure 22.
LINEARITY ERROR
vs DIGITAL INPUT CODE
1.0
0.8 TA = +25°C
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
2048 4096 6144 8192 10240 12288 14336 16383
Code
Figure 19.
LINEARITY ERROR
vs DIGITAL INPUT CODE
1.0
0.8 TA = -40°C
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
2048 4096 6144 8192 10240 12288 14336 16383
Code
Figure 21.
LINEARITY ERROR
vs DIGITAL INPUT CODE
1.0
0.8 TA = +125°C
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
2048 4096 6144 8192 10240 12288 14336 16383
Code
Figure 23.
Submit Documentation Feedback
11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet DAC8805.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| DAC8800 | Octal 8-Bit CMOS D/A Converter |  Analog Devices |
| DAC8800BR | Octal 8-Bit CMOS D/A Converter | Analog Devices |
| DAC8800FP | Octal 8-Bit CMOS D/A Converter | Analog Devices |
| DAC8800FR | Octal 8-Bit CMOS D/A Converter | Analog Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |