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PDF DAC8550 Data sheet ( Hoja de datos )
| Número de pieza | DAC8550 | |
| Descripción | VOLTAGE OUTPUT DIGITAL-TO-ANALOG CONVERTER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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BurrĆBrown Products
from Texas Instruments
DAC8550
SLAS476C – MARCH 2006 – REVISED MARCH 2006
16-BIT, ULTRA-LOW GLITCH, VOLTAGE OUTPUT
DIGITAL-TO-ANALOG CONVERTER
FEATURES
DESCRIPTION
• Relative Accuracy: 8 LSB (Max)
• Glitch Energy: 0.1 nV-s
• Settling Time: 10 µs to ±0.003% FSR
• Power Supply: +2.7 V to +5.5 V
• 16-Bit Monotonic Over Temperature
• MicroPower Operation: 200 µA at 5 V
• Rail-to-Rail Output Amplifier
• Power-On Reset to Midscale
• Power-Down Capability
• Schmitt-Triggered Digital Inputs
• SYNC Interrupt Facility
• 2's Complement Input and Reset to Midscale
• Operating Temperature Range: -40°C to 105°C
• Available Packages:
The DAC8550 is a small, low-power, voltage output,
16-bit digital-to-analog converter (DAC). It is
monotonic, provides good linearity, and minimizes
undesired code to code transient voltages. The
DAC8550 uses a versatile 3-wire serial interface that
operates at clock rates of up to 30 MHz and is
compatible with standard SPI™, QSPI™,
Microwire™, and digital signal processor (DSP)
interfaces.
The DAC8550 requires an external reference voltage
to set its output range. The DAC8550 incorporates a
power-on reset circuit that ensures that the DAC
output powers up at midscale and remain there until a
valid write takes place to the device. The DAC8550
contains a power-down feature, accessed over the
serial interface, that reduces the current consumption
of the device to 200 nA at 5 V.
– 3 mm × 5 mm MSOP-8
APPLICATIONS
• Process Control
The low-power consumption of this device in normal
operation makes it ideal for portable battery-operated
DataSheet4eUq.cuoipmment. Power consumption is 1 mW at 5 V,
reducing to 1 µW in power-down mode.
• Data Acquisition Systems
The DAC8550 is available in a MSOP-8 package.
• Closed-Loop Servo-Control
• PC Peripherals
Also see the DAC8551 binary coded counterpart of
the DAC8550.
• Portable Instrumentation
• Programmable Attenuation
FUNCTIONAL BLOCK DIAGRAM
DataShee
V DD
V FB
V REF Ref (+)
16−Bit DAC
V OUT
16
DAC Register
SYNC
SCLK
D IN
16
Shift Register
PWB Control
Resistor
Networ k
GND
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, QSPI are trademarks of Motorola.
DataSheet4UM.iccroomwire is a trademark of National Semiconductor.
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, Texas Instruments Incorporated
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DAC8550
www.ti.com
SLAS476C – MARCH 2006 – REVISED MARCH 2006
TIMING REQUIREMENTS(1)(2)
VDD = 2.7 V to 5.5 V, all specifications –40°C to 105°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
t
(3)
c
SCLK cycle time
t 1 SCLK HIGH time
t 2 SCLK LOW time
t su1 SYNC to SCLK rising edge setup time
t su2 Data setup time
t h Data hold time
t f SCLK falling edge to SYNC rising edge
t 3 Minimum SYNC HIGH time
VDD = 2.7 V to 3.6 V
VDD = 3.6 V to 5.5 V
VDD = 2.7 V to 3.6 V
VDD = 3.6 V to 5.5 V
VDD = 2.7 V to 3.6 V
VDD = 3.6 V to 5.5 V
VDD = 2.7 V to 3.6 V
VDD = 3.6 V to 5.5 V
VDD = 2.7 V to 3.6 V
VDD = 3.6 V to 5.5 V
VDD = 2.7 V to 3.6 V
VDD = 3.6 V to 5.5 V
VDD = 2.7 V to 3.6 V
VDD = 3.6 V to 5.5 V
VDD = 2.7 V to 3.6 V
VDD = 3.6 V to 5.5 V
20
ns
20
13
ns
13
22.5
ns
13
0
ns
0
5
ns
5
4.5
ns
4.5
0
ns
0
50
ns
33
et4U.com
(1) All input signals are specified with tR = tF = 3 ns (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2.
(2) See Serial Write Operation timing diagram.
(3) Maximum SCLK frequency is 30 MHz at VDD = 3.6 V to 5.5 V and 20 MHz at VDD = 2.7 V to 3.6 V.
SERIAL WRITE OPERATION
SCLK
SYNC
D
IN
t3
t su1
t su2
DB23
t2
th
DataSheet4U.com
tc
t1
tf
DB0
DataShee
DataSheet4U.com
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DAC8550
www.ti.com
SLAS476C – MARCH 2006 – REVISED MARCH 2006
TYPICAL CHARACTERISTICS: VDD = 2.7 V
At TA = 25°C, unless otherwise noted. Unsigned binary equivalent inputs are shown in all figures.
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs DIGITAL
INPUT CODE
(-40°C)
6
4 VDD = 2.7 V, VREF = 2.69 V
2
0
−2
−4
−6
1
0.5
0
−0.5
−1
0
8192 16384 24576 32768 40960 49152 57344 65536
Digital Input Code
Figure 27.
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs DIGITAL
INPUT CODE
(25°C)
6
4
VDD = 2.7 V, VREF = 2.69 V
2
0
−2
−4
−6
1
0.5
0
−0.5
−1
0
8192 16384 24576 32768 40960 49152 57344 65536
Digital Input Code
Figure 28.
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs DIGITAL INPUT
CODE
(105°C)
6
4 VDD = 2.7 V, VREF = 2.69 V
2
0
−2
−4
−6
10
DataSheet4U.com5
1
ZERO-SCALE ERROR
vs
TEMPERATURE
VDD = 2.7 V, VREF = 2.69 V
DataShee
0.5 0
0
−0.5
−1
0
8192 16384 24576 32768 40960 49152 57344 65536
Digital Input Code
−5
−40
0 40 80
Temperature − 5C
120
Figure 29.
Figure 30.
FULL-SCALE ERROR
vs
TEMPERATURE
5
VDD = 2.7 V, VREF = 2.69 V
0
1500
1200
900
IDD HISTOGRAM
VDD = VREF = 2.7 V
Reference Current Included
600
−5
300
−10
−40
DataSheet4U.com
0 40 80
Temperature − 5C
Figure 31.
120
0
120 140 160 180 200 220 240 260 280 300
IDD − Supply Current − mA
Figure 32.
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