参数资料
| 型号： | AD5381BSTZ-5 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/40页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT 40CH 5V 100-LQFP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 产品变化通告： | AD5381,3 Redesign Change 24/Oct/2011 |
| 设计资源： | 40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5381 (CN0010) AD5381 Channel Monitor Function (CN0013) |
| 标准包装： | 1 |
| 设置时间： | 6µs |
| 位数： | 12 |
| 数据接口： | 串行，并联 |
| 转换器数目： | 40 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 80mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 100-LQFP |
| 供应商设备封装： | 100-LQFP（14x14） |
| 包装： | 托盘 |
| 输出数目和类型： | 40 电压，单极 |
| 采样率（每秒）： | 167k |
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Data Sheet
AD5381
Rev. D | Page 23 of 40
Table 15. Control Register Contents
MSB
LSB
CR11
CR10
CR9
CR8
CR7
CR6
CR5
CR4
CR3
CR2
CR1
CR0
Control Register Write/Read
REG1 = REG0 = 0, A5 to A0 = 001100, R/W status determines
if the operation is a write (R/W = 0) or a read (R/W = 1). DB11
to DB0 contains the control registerdata.
Control Register Contents
CR11: Power-Down Status. This bit is used to configure the
output amplifier statein power-down.
CR11 = 1. Amplifier output is high impedance (defaulton
power-up).
CR11 = 0. Amplifier output is 100 k to ground.
CR10: REF Select. This bit selects the operating internal
referencefor the AD5381. CR10 is programmed as follows:
CR10 = 1: Internal reference is 2.5 V (AD5381-5 default), the
recommendedoperating reference for AD5381-5.
CR10 = 0: Internal reference is 1.25 V (AD5381-3 default),
the recommendedoperating reference for AD5381-3.
CR9: Current Boost Control. This bit is used to boost the
current in the output amplifier, thereby altering its slew rate.
This bit is configured as follows:
CR9 = 1: Boost Mode On. This maximizes the bias current
in the output amplifier, optimizing its slew rate but increasing
the power dissipation.
CR9 = 0: Boost Mode Off (default on power-up). This
reduces the bias current in the output amplifier and reduces
the overall power consumption.
CR8: Internal/External Reference. This bit determines if the
DAC uses its internal reference or an externally applied
reference.
CR8 = 1: Internal Reference Enabled.The reference output
depends on data loaded to CR10.
CR8 = 0: External Reference Selected(defaulton power-up).
CR7: Channel Monitor Enable(see Channel Monitor Function
section).
CR7= 1: Monitor Enabled. This enablesthe channel monitor
function. After a write to the monitor channel in the SFR
register, the selected channel output is routed to the
MON_OUT pin. VOUT39 operates at the MON_OUT pin.
CR7 = 0: Monitor Disabled (default on power-up). When the
monitor is disabled, the MON_OUT pin assumes its normal
DAC output function.
CR6: Thermal Monitor Function. When enabled, this function
is used to monitor the internal die temperature of the AD5381.
The thermal monitorpowersdown the output amplifiers when
the temperature exceeds130°C. This function can be used to
protect the device in cases where power dissipation may be
exceeded if a number of outputchannels aresimultaneously
short-circuited. A soft power-up will re-enable the output
amplifiers if the die temperature hasdroppedbelow 130°C.
CR6 = 1: Thermal MonitorEnabled.
CR6 = 0: Thermal MonitorDisabled (default on power-up).
CR5: Don’t Care.
CR4 to CR0: Toggle Function Enable. This function allows the
user to toggle the output between two codes loaded to the A
and B registers for each DAC.Control Register Bits CR4 to CR0
are used to enableindividual groups of eight channels for
operation in toggle mode. A Logic1 written to any bit enables
a group of channels; a Logic0 disables a group. LDACis used
to toggle between the two registers.
Table 16.
CR Bit
Group
Channels
CR4
4
32–39
CR3
3
24–31
CR2
2
16–23
CR1
1
8–15
CR0
0
0–7
Channel Monitor Function
REG1 = REG0 = 0, A5 to A0 = 001010
DB11–DB6 = Contain data to address the monitoredchannel.
A channel monitor function is providedon the AD5381. This
feature, which consists of a multiplexeraddressed via the inter-
face, allows any channel output to be routed to the MON_OUT
pin for monitoring using an external ADC. In channel monitor
mode, VOUT39 becomes the MON_OUT pin, to which all
monitored pins arerouted. The channel monitor function must
be enabled in the control registerbeforeany channels arerouted
to MON_OUT. On the AD5381, DB11 to DB6 contain the
channel address forthe monitored channel. Selecting Channel
Address 63 three-states MON_OUT.
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相关代理商/技术参数 |
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| AD5381BSTZ-5-REEL | 功能描述:IC DAC 12BIT 40CH 5V 100-LQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 设置时间:1µs 位数:8 数据接口:串行 转换器数目:8 电压电源:双 ± 功率耗散（最大）:941mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC W 包装:带卷 (TR) 输出数目和类型:8 电压，单极 采样率（每秒）:* |
| AD5382BST-3 | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:32/40-CHANNEL 3V/5V SINGLE SUPPLY 12/14-BIT VOUT DAC - Bulk |
| AD5382BST-3-REEL | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP T/R |
| AD5382BST-5 | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:32-CHN 5V SINGLE SUPPLY 14-BIT VOUT I.C. - Bulk |
| AD5382BST-5-REEL | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP T/R |
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