參數資料
型號: ADS7815UE4
廠商: Texas Instruments
文件頁數: 12/16頁
文件大?。?/td> 0K
描述: IC 16BIT 250KHZ ADC CONV 28-SOIC
產品培訓模塊: Data Converter Basics
標準包裝: 20
位數: 16
采樣率(每秒): 250k
數據接口: 并聯
轉換器數目: 1
功率耗散(最大): 250mW
電壓電源: 雙 ±
工作溫度: -25°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
供應商設備封裝: 28-SOIC
包裝: 管件
輸入數目和類型: 1 個單端,雙極
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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參數描述
ADS7815UG4 功能描述:模數轉換器 - ADC 16-Bit 250kHz Sampling CMOS RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7816 制造商:BB 制造商全稱:BB 功能描述:12-Bit High Speed Micro Power Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7816B 制造商:BB 制造商全稱:BB 功能描述:12-Bit High Speed Micro Power Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7816C 制造商:Texas Instruments 功能描述:
ADS7816E 制造商:Texas Instruments 功能描述: