参数资料
型号: MAX5525ETC+T
厂商: Maxim Integrated Products
文件页数: 9/23页
文件大小: 0K
描述: IC DAC 10BIT DUAL ULP 12-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
设置时间: 660µs
位数: 10
数据接口: MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 2
电压电源: 单电源
功率耗散(最大): 1.35W
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 12-WQFN 裸露焊盘
供应商设备封装: 12-TQFN-EP(4x4)
包装: 带卷 (TR)
输出数目和类型: 2 电压,单极;2 电压,双极
采样率(每秒): *
MAX5522–MAX5525
Dual, Ultra-Low-Power,
10-Bit, Voltage-Output DACs
______________________________________________________________________________________
17
Applications Information
1-Cell and 2-Cell Circuits
See Figure 3 for an illustration of how to power the
MAX5522–MAX5525 with either one lithium-ion battery
or two alkaline batteries. The low current consumption
of the devices make the MAX5522–MAX5525 ideal for
battery-powered applications.
Programmable Current Source
See the circuit in Figure 4 for an illustration of how to
configure the MAX5524/MAX5525 as a programmable
current source for driving an LED. The MAX5524/
MAX5525 drive a standard NPN transistor to program
the current source. The current source (ILED) is defined
in the equation in Figure 4.
REFIN
MAX5524
MAX6006
(1
A, 1.25V
SHUNT
REFERENCE)
GND
+1.25V
0.01
F
536k
VDD
DAC
VOUT
NDAC IS THE NUMERIC VALUE
OF THE DAC INPUT CODE.
VOUT (1.22mV / LSB)
1.8V
≤ VALKALINE ≤ 3.3V
2.2V
≤ VLITHIUM ≤ 3.3V
VOUT =
VREFIN
× NDAC
1024
0.1
F
Figure 3. Portable Application Using Two Alkaline Cells or One Lithium Coin Cell
R
2N3904
NDAC IS THE NUMERIC VALUE
OF THE DAC INPUT CODE.
ILED
REFIN
LED
1/2 MAX5524
V+
DAC
VOUT
ILED =
VREFIN
× NDAC
1024
× R
FB
Figure 4. Programmable Current Source Driving an LED
R
FB
NDAC IS THE NUMERIC VALUE
OF THE DAC INPUT CODE.
IT
REFIN
1/2 MAX5524
DAC
VOUT
VOUT = VBIAS + (IT
× R)
VOUT
VBIAS
TRANSDUCER
VBIAS =
VREFIN
× NDAC
1024
Figure 5. Transimpedance Configuration for a Voltage-Biased
Current-Output Transducer
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