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參數(shù)資料
| 型號(hào)： | MAX530BCNG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | Differential Bus Transceiver 8-SOIC -40 to 105 |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 25 us SETTLING TIME, 12-BIT DAC, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁(yè)數(shù)： | 10/16頁(yè) |
| 文件大?。?/td> | 140K |
| 代理商： | MAX530BCNG |
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An additional 110μA of supply current can be saved
when the internal reference is not used by connecting
REFGND to V
DD
. A low on resistance N-channel FET,
such as the 2N7002, can be used to turn off the internal
reference to create a shutdown mode with minimum
current drain (Figure 3). When CLR is high, the transis-
tor pulls REFGND to AGND and the reference and DAC
operate normally. When CLR goes low, REFGND is
pulled up to V
DD
and the reference is shut down. At the
same time, CLR resets the DAC register to all 0s, and
the op-amp output goes to 0V for unity-gain and G = 2
Table 2. Input Latch Addressing
modes. This reduces the total single-supply operating
current from 250μA (400μA max) to typically 40μA in
shutdown mode.
A small error voltage is added to the reference output
by the reference current flowing through the N-channel
pull-down transistor. The switch’s on resistance should
be less than 5
. A typical reference current of 100μA
would add 0.5mV to REFOUT. Since the reference cur-
rent and on resistance increase with temperature, the
overall temperature coefficient will degrade slightly.
As data is loaded into the DAC and the output moves
above GND, the op-amp quiescent current increases to
its nominal value and the total operating current aver-
ages 250μA. Using dual supplies (±5V), the op amp is
fully biased continuously, and the V
DD
supply current is
more constant at 250μA. The V
SS
current is typically
150μA.
The MAX530 logic inputs are compatible with TTL and
CMOS logic levels. However, to achieve the lowest
power dissipation, drive the digital inputs with rail-to-rail
CMOS logic. With TTL logic levels, the power require-
ment increases by a factor of approximately 2.
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC
10
______________________________________________________________________________________
M
MAX530
12-BIT DAC LATCH
NBL
INPUT
LATCH
NBH
INPUT
LATCH
NBM
INPUT
LATCH
D0/D8
D1/D9
D2/D10
D4
D3/D11
D6
D5
D7
POWER-ON
RESET
CONTROL
LOGIC
DAC
A0
A1
CS
WR
LDAC
CLR
33
μ
F
2.048V
REFERENCE
REFOUT
REFIN
ROFS
RFB
V
OUT
+5V
V
SS
DGND
2N7002
REFGND
AGND
V
DD
Figure 3. Low-Current Shutdown Mode
CLR
L
H
H
H
H
H
H
H
H
CS
X
H
X
L
L
L
H
L
L
WR
X
X
H
L
L
L
H
L
L
LDAC
X
H
H
H
H
H
L
X
L
A0
X
X
X
H
H
L
X
L
H
A1
X
X
X
H
L
H
X
L
H
DATA UPDATED
Reset DAC Latches
No Operation
No Operation
NBH (D8-D11)
NBM (D4-D7)
NBL (D0-D3)
Update DAC Only
DAC NOT UPDATED
NBH and Update DAC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX530BENG | Differential Bus Transceiver 8-SOIC -40 to 105 |
| MAX530BEWG | Differential Bus Transceiver 8-PDIP -40 to 105 |
| MAX530BEAG | +5V, Low-Power, Parallel-Input, Voltage-Output, 12-Bit DAC |
| MAX530AMRG | 12-Bit Digital-to-Analog Converter |
| MAX531BMJD | 12-Bit Digital-to-Analog Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX530BCNG+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit Precision DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX530BCWG | 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX530BCWG+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit Precision DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX530BCWG+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit Precision DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX530BCWG-T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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