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參數(shù)資料
| 型號： | MAX5816ATB+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 21/32頁 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT SRL 4CH 10TDFN |
| 產(chǎn)品培訓(xùn)模塊： | Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 設(shè)置時間： | 4.5µs |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | I²C，串行 |
| 轉(zhuǎn)換器數(shù)目： | 4 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 1.95W |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-WFDFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 10-TDFN-EP（3x3） |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 4 電壓，單極 |
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Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC
with Internal Reference and I2C Interface
MAX5816
Maxim Integrated Products 28
Applications Information
Power-On Reset (POR)
When power is applied to VDD, the DAC output is set to
zero scale. To optimize DAC linearity, wait until the sup-
plies have settled and the internal setup and calibration
sequence completes (200Fs, typ). Note all commands
issued during the period will be ignored.
Power Supplies and
Bypassing Considerations
Bypass VDD with high-quality ceramic capacitors to
a low-impedance ground as close as possible to the
device. Minimize lead lengths to reduce lead inductance.
Connect the GND to the analog ground plane.
Layout Considerations
Digital and AC transient signals on GND can create noise
at the output. Connect GND to form the star ground for the
DAC system. Refer remote DAC loads to this system ground
for the best possible performance. Use proper grounding
techniques, such as a multilayer board with a low-inductance
ground plane, or star connect all ground return paths back
to the MAX5816 GND. Carefully layout the traces between
channels to reduce AC cross-coupling. Do not use wire-
wrapped boards and sockets. Use shielding to minimize
noise immunity. Do not run analog and digital signals parallel
to one another, especially clock signals. Avoid routing digital
lines underneath the MAX5816 package.
Definitions
Integral Nonlinearity (INL)
INL is the deviation of the measured transfer function
from a straight line drawn between two codes once offset
and gain errors have been nullified.
Differential Nonlinearity (DNL)
DNL is the difference between an actual step height
and the ideal value of 1 LSB. If the magnitude of the
DNL P 1 LSB, the DAC guarantees no missing codes and
is monotonic. If the magnitude of the DNL R 1 LSB, the
DAC output may still be monotonic.
Offset Error
Offset error indicates how well the actual transfer func-
tion matches the ideal transfer function at a single point.
Typically, the point at which the offset error is specified
is at or near the zero-scale point of the transfer function.
Gain Error
Gain error is the difference between the ideal and the
actual full-scale output voltage on the transfer curve, after
nullifying the offset error. This error alters the slope of the
transfer function and corresponds to the same percentage
error in each step.
Settling Time
The settling time is the amount of time required from the
start of a transition, until the DAC output settles to the new
output value within the converter’s specified accuracy.
Digital Feedthrough
Digital feedthrough is the amount of noise that appears
on the DAC output when the DAC digital control lines are
toggled.
Digital-to-Analog Glitch Impulse
A major carry transition occurs at the midscale point
where the MSB changes from low to high and all other
bits change from high to low, or where the MSB changes
from high to low and all other bits change from low to
high. The duration of the magnitude of the switching
glitch during a major carry transition is referred to as the
digital-to-analog glitch impulse.
The digital-to-analog power-up glitch is the duration of
the magnitude of the switching glitch that occurs as the
device exits power-down mode.
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