AD580
THE AD580 AS A LOW POWER, LOW VOLTAGE,
PRECISION REFERENCE FOR DATA CONVERTERS
The AD580 has a number of features that make it ideally suited
for use with A/D and D/A data converters used in complex
microprocessor-based systems. The calibrated 2.500 V output
minimizes user trim requirements and allows operation from a
single, low voltage supply. Low power consumption (1 mA
output amplifier is also low power, requiring only 2.5 mA
quiescent current. Its laser-trimmed offset voltage preserves the
±1/2 LSB linearity of the AD7542KN without user trims, and it
typically settles to ±1/2 LSB in less than 3 μs. It will provide the
0 V to –2.5 V output swing from ±5 V supplies.
+5V
+E
quiescent current) is commensurate with that of CMOS-type
AD580
E OUT
I OUT2
AGND
devices, while the low cost and small package complements the
decreasing cost and size of the latest converters.
Figure 12 shows the AD580 used as a reference for the AD7542
12-bit CMOS DAC with complete microprocessor interface.
The AD580 and the AD7542 are specified to operate from a
SYSTEM
8-BIT DATA BUS
AD7 AD0
D0
D1
D2
D3
V DD
14
7
6
5
4
13 10
CLR A0
–E
AD7542
11 9
A1 WR
500 ?
15
8
CS
GAIN
ADJUST
V REF
RFB
16
1
2
3
12
200 ?
I OUT1
22pF
AD544L
–5V
ANALOG
INPUT
single 5 V supply, thus eliminating the need to provide a 15 V
power supply for the sole purpose of operating a reference. The
FROM SYSTEM RESET
A0
FROM ADDRESS BUS
A1
FROM WR
DGND
AD7542 includes three 4-bit data registers, a 12-bit DAC
register, and address decoding logic. It may thus be interfaced
directly to a 4-, 8- or 16-bit data bus. Only 8 mA of quiescent
FROM ADDRESS DECODER
Figure 12. Low Power, Low Voltage Reference for the AD7542
Microprocessor-Compatible, 12-Bit DAC
current from the single 5 volt supply is required to operate the
AD7542 which is packaged in a small, 16-pin DIP. The AD544
Rev. B | Page 7 of 8
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相关代理商/技术参数
AD580L 制造商:AD 制造商全称:Analog Devices 功能描述:High Precision 2.5 V IC Reference
AD580LCSA 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Reference
AD580LH 功能描述:IC VREF SERIES PREC 2.5V TO-52-3 RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:3,000 系列:- 基准类型:旁路,精度 输出电压:3V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:82µA 电流 - 静态:- 电流 - 输出:15mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-TSSOP(5 引线),SC-88A,SOT-353 供应商设备封装:SC-70-5 包装:带卷 (TR) 其它名称:296-20888-2
AD580LMH 制造商:AD 制造商全称:Analog Devices 功能描述:High Precision,2.5 V IC Reference
AD580M 制造商:AD 制造商全称:Analog Devices 功能描述:High Precision 2.5 V IC Reference
AD580MCSA 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Reference
AD580MH 制造商:Analog Devices 功能描述:
AD580S 制造商:AD 制造商全称:Analog Devices 功能描述:High Precision 2.5 V IC Reference