- 您现在的位置：买卖IC网 > PDF目录16871 > EVAL-AD5522EBDZ (Analog Devices Inc)BOARD EVAL FOR 14X14MM AD5522 PDF资料下载
参数资料
| 型号： | EVAL-AD5522EBDZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 27/64页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR 14X14MM AD5522 |
| 标准包装： | 1 |
| 主要目的： | 测试与测量，参数测量单元（PMU） |
| 已用 IC / 零件： | AD5522 |
| 已供物品： | 板 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页当前第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页
Data Sheet
AD5522
Rev. E | Page 33 of 64
CHOOSING POWER SUPPLY RAILS
As noted in the Specifications section, the minimum supply
variation across the part |AVDD AVSS| ≥ 20 V. For the
AD5522 circuits to operate correctly, the supply rails must take
into account not only the force voltage range, but also the
internal DAC minimum voltage level, as well as headroom and
so on. The DAC amplifier gains VREF by 4.5, and the offset
DAC centers that range about some chosen point.
The supplies need to cater to the DAC output voltage range to
avoid impinging on other parts of the circuit (for example, if the
measure current block for rated current ranges has a gain of
10/5, the supplies need to provide sufficient headroom and
footroom to not clip the measure current circuit when full
current range is required).
Also, the MEASOUT gain = 0.2 setting uses the VMIN level for
scaling purposes; if there is not enough footroom for this
VMIN level, then the MV and MI output voltage range is
affected.
For the MEASOUT gain = 0.2 setting, it is important to choose
AVSS based on the following:
AVSS ≤ 3.5 × (VREF × (OFFSET_DAC_CODE/216))
AVSS_footroom VDUTGND (RCABLE × ILOAD)
where:
AVSS_footroom = 4 V.
VDUTGND is the voltage range anticipated at DUTGND.
RCABLE is the cable/path resistance.
ILOAD is the maximum load current.
MEASURE OUTPUT (MEASOUTx PINS)
The measured DUT voltage or current (voltage representation
of DUT current) is available on the MEASOUTx pin with respect
to AGND. The default MEASOUTx range is the forced voltage
range for voltage measure and current measure (nominally
±11.25 V, depending on the reference voltage and offset DAC)
and includes some overrange to allow for offset correction.
The serial interface allows the user to select another MEASOUTx
range of 0.9 × VREF to AGND, allowing an ADC with a 5 V
input range to be used. The MEASOUTx line for each PMU
channel can be made high impedance via the serial interface.
The offset DAC directly offsets the measured output voltage level,
but only when GAIN1 = 0. When the MEASOUT gain is 0.2, the
minimum code from the DAC is used to center the MEASOUTx
voltage and to ensure that the voltage is within the range of 0 to
0.9 × VREF (see Figure 48).
When using low supply voltages, ensure that there is sufficient
headroom and footroom for the DAC output range (set by the
VREF and offset DAC setting).
DEVICE UNDER TEST GROUND (DUTGND)
By default, there is one DUTGND input available for all four
PMU channels. However, in some PMU applications, it is
necessary that each channel operate from its own DUTGND
level. The dual function pin, GUARDINx/DUTGNDx, can be
configured as an input to the guard amplifier (GUARDIN) or
as a DUTGND input for each channel.
The pin function can be configured through the serial interface
on power-on for the required operation. The default connection
is SW13b (GUARDIN) and SW14b (shared DUTGND).
Table 10. MEASOUTx Output Ranges for GAIN1 = 0, MEASOUT Gain = 1
MEASOUT
Function
Measure
Current Gain
Transfer Function
Output Voltage Range for VREF = 5 V1
Offset DAC = 0x0
Offset DAC = 0xA492
Offset DAC = 0xED67
MV
5 or 10
±VDUT
0 V to 22.5 V
±11.25 V
16.26 V to +6.25 V
MI
GAIN0 = 0
10
(IDUT × RSENSE × 10) + VMID
0 V to 22.5 V
±11.25 V
16.26 V to +6.25 V
GAIN0 = 1
5
(IDUT × RSENSE × 5) + VMID
0 V to 11.25 V
(VREF = 2.5 V)
±5.625 V
(VREF = 2.5 V)
8.13 V to +3.12 V
(VREF = 2.5 V)
1
VREF = 5 V unless otherwise noted.
Table 11. MEASOUTx Output Ranges for GAIN1 = 1, MEASOUT Gain = 0.2
MEASOUT
Function
Measure
Current Gain
Transfer Function
Output Voltage Range for VREF = 5 V1, 2
MV
5 or 10
0.2 × (VDUT × VREF × OFFSET_DAC_CODE/216)
0 V to 4.5 V (±2.25 V centered around 2.25 V)
MI
GAIN0 = 0
10
(IDUT × RSENSE × 10 × 0.2) + (0.45 × VREF)
0 V to 4.5 V (±2.25 V centered around 2.25 V)
GAIN0 = 1
5
(IDUT × RSENSE × 5 × 0.2) + (0.45 × VREF)
1.125 V to 3.375 V (±1.125 V, centered around 2.25 V)
0 V to 2.25 V (±1.125 V, centered around 1.125 V)
(VREF = 2.5 V)
1
VREF = 5 V unless otherwise noted.
2
The offset DAC setting has no effect on the output voltage range.
相关PDF资料 |
PDF描述 |
|---|---|
| EVAL-AD5520EBZ | BOARD EVAL FOR AD5520 |
| MAX6198AESA+T | IC VREF SERIES PREC 4.096V 8SOIC |
| QPI-5-EVAL1 | EVALUATION BOARD FOR QPI-5 |
| H6MMH-4006M | DIP CABLE - HDM40H/AE40M/HDM40H |
| QPO-2-EVAL1 | EVALUATION BOARD FOR QPO-2 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-AD5522EBUZ | 功能描述:BOARD EVAL FOR 12X12MM AD5522 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| EVAL-AD5532EB | 制造商:AD 制造商全称:Analog Devices 功能描述:32-Channel Infinite Sample-and-Hold |
| EVAL-AD5532EBZ | 功能描述:BOARD EVAL FOR AD5532 RoHS:是 类别:编程器，开发系统 >> 评估板 - 数模转换器 (DAC) 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- DAC 的数量:4 位数:12 采样率（每秒）:- 数据接口:串行，SPI? 设置时间:3µs DAC 型:电流/电压 工作温度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
| EVAL-AD5532HSEBZ | 功能描述:BOARD EVAL FOR AD5532HS RoHS:是 类别:编程器，开发系统 >> 评估板 - 数模转换器 (DAC) 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- DAC 的数量:4 位数:12 采样率（每秒）:- 数据接口:串行，SPI? 设置时间:3µs DAC 型:电流/电压 工作温度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
| EVAL-AD5533EB | 制造商:AD 制造商全称:Analog Devices 功能描述:32-Channel Precision Infinite Sample-and-Hold |
发布紧急采购，3分钟左右您将得到回复。