参数资料
型号: ADS7815UE4
厂商: Texas Instruments
文件页数: 12/16页
文件大小: 0K
描述: IC 16BIT 250KHZ ADC CONV 28-SOIC
产品培训模块: Data Converter Basics
标准包装: 20
位数: 16
采样率(每秒): 250k
数据接口: 并联
转换器数目: 1
功率耗散(最大): 250mW
电压电源: 双 ±
工作温度: -25°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC
包装: 管件
输入数目和类型: 1 个单端,双极
ADS7815
5
SBAS065B
www.ti.com
BASIC OPERATION
Figure 1 shows the recommended circuit for operation of the
ADS7815. A falling edge on the convert pulse signal places
the sample and hold into the hold mode and initiates a
conversion. When the conversion is complete, the pins D15
through D0 become active and the result of the conversion
is placed on these outputs. In the circuit shown in Figure 1,
the rising edge of BUSY latches the result into the 74HC574s.
After the conversion is complete, the ADS7815 sample and
hold returns to the sample mode and begins acquiring the
input signal for the next conversion. Allowing 4
s between
falling edges of the convert pulse signal assures accurate
acquisition of the analog input.
FIGURE 1. Basic Operation.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V
IN
GND
REF
CAP
GND
D15
D14
D13
D12
D11
D10
D9
D8
GND
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+V
S
+V
S
BUSY
CS
R/C
–V
S
D0
D1
D2
D3
D4
D5
D6
D7
ADS7815
R
1
75
+5V
–5V
+
2.2F
C
4
0.1F
C
6
+
2.2F
C
3
0.1F
C
5
Convert Pulse
74HC00
100ns min
Processor
Bus
Processor
Bus
+5V
0.1F
C
1
+
10F
C
2
–5V
OC
0.1F
C
7
+
10F
C
8
2
3
4
5
6
7
8
9
1D
2D
3D
4D
5D
6D
7D
8D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
1
10
OC
CLK
74HC574
2
3
4
5
6
7
8
9
1D
2D
3D
4D
5D
6D
7D
8D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
1
10
OC
CLK
74HC574
R
2
10
OPA628
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ADS7816C 制造商:Texas Instruments 功能描述:
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