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| DAC8718 Datasheet, PDF (3/60 Pages) Texas Instruments – Octal, 16-Bit, Low-Power, High-Voltage Output, Serial Input DIGITAL-TO-ANALOG CONVERTER | |||
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DAC8718
www.ti.com
SBAS467A â MAY 2009 â REVISED DECEMBER 2009
ELECTRICAL CHARACTERISTICS: Dual-Supply
All specifications at TA = TMIN to TMAX, AVDD = +16.5V, AVSS = â16.5V, IOVDD = DVDD = +5V, REF-A and REF-B = +5V,
gain = 6, AGND-x = DGND = 0V, data format = straight binary, and Offset DAC A and Offset DAC B are at default values(1),
unless otherwise noted.
PARAMETER
STATIC PERFORMANCE(2)
Resolution
Linearity error
Differential linearity error
Bipolar zero error
Bipolar zero error TC
Zero-code error
Zero-code error TC
Gain error
Gain error TC
Full-scale error
Full-scale error TC
DC crosstalk(3)
CONDITIONS
Measured by line passing through codes 0000h and FFFFh
Measured by line passing through codes 0000h and FFFFh
TA = +25°C, before user calibration, gain = 6, code = 8000h
TA = +25°C, before user calibration, gain = 4, code = 8000h
TA = +25°C, after user calib., gain = 4 or 6, code = 8000h
Gain = 4 or 6, code = 8000h
TA = +25°C, gain = 6, code = 0000h
TA = +25°C, gain = 4, code = 0000h
Gain = 4 or 6, code = 0000h
TA = +25°C, gain = 6
TA = +25°C, gain = 4
Gain = 4 or 6
TA = +25°C, before user calibration, gain = 6, code = FFFFh
TA = +25°C, before user calibration, gain = 4, code = FFFFh
TA = +25°C, after user calib., gain = 4 or 6, code = FFFFh
Gain = 4 or 6, code = FFFFh
Measured channel at code = 8000h, full-scale change on any
other channel
DAC8718
MIN
TYP
16
±1
±0.5
±0.5
±1
±1
±0.5
0.2
MAX
UNIT
Bits
±4
LSB
±1
LSB
±10
LSB
±15
LSB
LSB
±2 ppm FSR/°C
±10
LSB
±15
LSB
±3 ppm FSR/°C
±10
LSB
±15
LSB
±3 ppm FSR/°C
±10
LSB
±15
LSB
LSB
±3 ppm FSR/°C
LSB
(1) Offset DAC A and Offset DAC B are trimmed in manufacturing to minimize the error for symmetrical output. The default value may vary
no more than ±10 LSB from the nominal number listed in Table 7. The Offset DAC pins are not intended to drive an external load, and
must not be connected during dual-supply operation.
(2) Gain = 4 and TC specified by design and characterization.
(3) The DAC outputs are buffered by op amps that share common AVDD and AVSS power supplies. DC crosstalk indicates how much dc
change in one or more channel outputs may occur when the dc load current changes in one channel (because of an update). With
high-impedance loads, the effect is virtually immeasurable. Multiple AVDD and AVSS terminals are provided to minimize dc crosstalk.
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): DAC8718
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