- 您现在的位置：买卖IC网 > PDF目录10210 > AD7862ARSZ-10REEL (Analog Devices Inc)IC ADC 12BIT DUAL 250KSPS 28SSOP PDF资料下载
参数资料
| 型号： | AD7862ARSZ-10REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT DUAL 250KSPS 28SSOP |
| 标准包装： | 1,500 |
| 位数： | 12 |
| 采样率（每秒）： | 250k |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 75mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 4 个单端，双极 |
AD7862
–9–
REV. 0
and fourth read pulses, after the second conversion and A0 high,
access the result from Channel B (VB1 and VB2 respectively). A0’s
state can be changed any time after the CONVST goes high,
i.e., track/holds into hold, and 400 ns prior to the next falling
edge of CONVST. Data is read from the part via a 12-bit
parallel data bus with standard CS and RD signal, i.e., the read
operation consists of a negative going pulse on the CS pin
combined with two negative going pulses on the RD pin (while
the CS is low), accessing the two 12-bit results. Once the read
operation has taken place, a further 300 ns should be allowed
before the next falling edge of CONVST to optimize the settling
of the track/hold amplifier before the next conversion is initiated.
With the internal clock frequency at its maximum (3.7 MHz—not
accessible externally), the achievable throughput rate for the
part is 3.6
s (conversion time) plus 100 ns (read time) plus
0.3
s (acquisition time). This results in a minimum throughput
time of 4
s (equivalent to a throughput rate of 250 kHz).
Read Options
Apart from the read operation described above and displayed in
Figure 5a, other CS and RD combinations can result in
different channels/inputs being read in different combinations.
Suitable combinations are shown in Figures 5b through 5d.
VA1
VA2
CS
RD
DATA
Figure 5b. Read Option A
VA1
VA2
CS
RD
DATA
VA1
Figure 5c. Read Option B
VA1
VB1
A0
CS
RD
DATA
Figure 5d. Read Option C
OPERATING MODES
Mode 1 Operation (High Sampling Performance)
The timing diagram in Figure 5a is for optimum performance in
operating mode 1 where the falling edge of CONVST starts
conversion and puts the track/hold amplifiers into their hold
mode. This falling edge of CONVST also causes the BUSY
signal to go high to indicate that a conversion is taking place.
The BUSY signal goes low when the conversion is complete,
which is 3.6
s max after the falling edge of CONVST, and new
data from this conversion is available in the output latch of the
AD7862. A read operation accesses this data. If the multiplexer
select A0 is low, the first and second read pulses after the first
conversion access the result from Channel A (VA1 and VA2
VA1
VA2
VB1
VB2
t
3
t
1
t
2
t
4
t
5
t
6
t
CONV = 3.6s
t7
CONVST
BUSY
A0
CS
RD
DATA
300ns
400ns
Figure 5a. Mode 1 Timing Operation Diagram for High Sampling Performance
相关PDF资料 |
PDF描述 |
|---|---|
| CXS3106A14S5S | CONN PLUG 5POS STRGHT SKT |
| AD7492BRZ | IC ADC 12BIT REF/CLOCK 24SOIC |
| ADM488ABRZ-REEL7 | IC TXRX RS485/422 DIFF SGL 8SOIC |
| AD7472YR-REEL | IC ADC 12BIT PARALLEL 24-SOIC |
| PX0764/P | CONN BOX MOUNT 2POS W/PINS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7862ARSZ-2 | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 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 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7862ARSZ-2REEL | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 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 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7862ARSZ-3 | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 其它有关文件:TSA1204 View All Specifications 标准包装:1 系列:- 位数:12 采样率（每秒）:20M 数据接口:并联 转换器数目:2 功率耗散（最大）:155mW 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-TQFP 供应商设备封装:48-TQFP（7x7） 包装:Digi-Reel® 输入数目和类型:4 个单端，单极；2 个差分，单极 产品目录页面:1156 (CN2011-ZH PDF) 其它名称:497-5435-6 |
| AD7862ARSZ-3REEL | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 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 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7862ARZ-10 | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 其它有关文件:TSA1204 View All Specifications 标准包装:1 系列:- 位数:12 采样率（每秒）:20M 数据接口:并联 转换器数目:2 功率耗散（最大）:155mW 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-TQFP 供应商设备封装:48-TQFP（7x7） 包装:Digi-Reel® 输入数目和类型:4 个单端，单极；2 个差分，单极 产品目录页面:1156 (CN2011-ZH PDF) 其它名称:497-5435-6 |
发布紧急采购，3分钟左右您将得到回复。