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參數(shù)資料
| 型號： | MAX5180BEEI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | Dual, 10-Bit, 40MHz, Current/Voltage Simultaneous-Output DACs |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 0.025 us SETTLING TIME, 10-BIT DAC, PDSO28 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, MO137-AD, QSOP-28 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大小： | 491K |
| 代理商： | MAX5180BEEI |
M
Dual, 10-Bit, 40MHz, Current/Voltage
Simultaneous-Output DACs
8
_______________________________________________________________________________________
Detailed Description
The MAX5180/MAX5183 are dual 10-bit digital-to-ana-
log converters (DACs) capable of operating with clock
speeds up to 40MHz. Each of these dual converters
consists of separate input and DAC registers, followed
by a current source array capable of generating up to
1.5mA full-scale output current (Figure 1). An integrat-
ed +1.2V voltage reference and control amplifier deter-
mine the data converters’ full-scale output currents/
voltages. Careful reference design ensures close gain
matching and excellent drift characteristics. The
MAX5183’s voltage output operation features matched
400
on-chip resistors that convert the current array
current into a voltage.
Internal Reference and Control Amplifier
The MAX5180/MAX5183 provide an integrated
50ppm/°C, +1.2V, low-noise bandgap reference that
can be disabled and overridden by an external refer-
ence voltage. REFO serves either as an external refer-
ence input or an integrated reference output. If
REN
is
connected to AGND, the internal reference is selected
and REFO provides a +1.2V output. Due to its limited
10μA output drive capability, REFO must be buffered
with an external amplifier if heavier loading is required.
The MAX5180/MAX5183 also employ a control amplifier
designed to simultaneously regulate the full-scale out-
put current (I
FS
) for both outputs of the devices. The
output current is calculated as follows:
I
FS
= 8
·
I
REF
where I
REF
is the reference output current (I
REF
=
V
REFO/
R
SET
) and I
FS
is the full-scale output current.
R
SET
is the reference resistor that determines the
amplifier’s output current on the MAX5180 (Figure 2).
This current is mirrored into the current-source array
where it is equally distributed between matched current
segments and summed to valid output current readings
for the DACs.
The MAX5183 converts each output current (DAC1 and
DAC2) into an output voltage (V
OUT1
, V
OUT2
) with two
internal, ground-referenced 400
load resistors. Using
the internal +1.2V reference voltage, the MAX5183’s
integrated reference output current resistor (R
SET
=
9.6k
) sets I
REF
to 125μA and I
FS
to 1mA.
9.6k
REFR
REFO
1.2V REF
REN
CURRENT-
SOURCE ARRAY
DAC 1 SWITCHES
DAC 2 SWITCHES
4
MSB DECODE
CLK
OUTPUT
LATCHES
OUTPUT
LATCHES
MSB DECODE
*INTERNAL 400
AND 9.6k
RESISTORS FOR MAX5183 ONLY.
AV
DD
AGND
DACEN
PD
*
4
*
*
4
*
4
DV
DD
DGND
D9
–
D0
CS
CREF2
MAX5180
MAX5183
CREF1
OUT2P
OUT2N
OUT1P
OUT1N
INPUT
LATCHES
INPUT
LATCHES
*
Figure 1. Functional Diagram
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5180BEEI+ | 功能描述:數(shù)模轉換器- DAC 10-Bit 2Ch High Speed DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5180BEEI+T | 功能描述:數(shù)模轉換器- DAC 10-Bit 2Ch High Speed DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5180BEEI-T | 功能描述:數(shù)模轉換器- DAC 10-Bit 2Ch High Speed DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5181 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:10-Bit, 40MHz, Current/Voltage-Output DACs |
| MAX5181_10 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:10-Bit, 40MHz, Current/Voltage-Output DACs |
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