参数资料
型号: ADS8412IPFBTG4
厂商: Texas Instruments
文件页数: 29/30页
文件大小: 0K
描述: IC ADC 16BIT 2MSPS 48-TQFP
产品培训模块: Data Converter Basics
标准包装: 250
位数: 16
采样率(每秒): 2M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 200mW
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: 带卷 (TR)
输入数目和类型: 1 个差分,单极
配用: 296-18385-ND - EVALUATION MODULE FOR ADS8412
www.ti.com
ADS8412
SLAS384A – JUNE 2003 – REVISED DECEMBER 2004
Terminal Functions
NAME
NO.
I/O
DESCRIPTION
AGND
5, 8, 11, 12,
-
Analog ground
14, 15, 44,
45
BDGND
25, 35
-
Digital ground for bus interface digital supply
BUSY
36
O
Status output. High when a conversion is in progress.
BYTE
39
I
Byte select input. Used for 8-bit bus reading. 0: No fold back 1: Low byte D[7:0] of the 16 most
significant bits is folded back to high byte of the 16 most significant pins DB[15:8].
CONVST
40
I
Convert start. The falling edge of this input ends the acquisition period and starts the hold period.
CS
42
I
Chip select. The falling edge of this input starts the acquisition period.
8-Bit Bus
16-Bit Bus
Data Bus
BYTE = 0
BYTE = 1
BYTE = 0
DB15
16
O
D15 (MSB)
D7
D15 (MSB)
DB14
17
O
D14
D6
D14
DB13
18
O
D13
D5
D13
DB12
19
O
D12
D4
D12
DB11
20
O
D11
D3
D11
DB10
21
O
D10
D2
D10
DB9
22
O
D9
D1
D9
DB8
23
O
D8
D0 (LSB)
D8
DB7
26
O
D7
All ones
D7
DB6
27
O
D6
All ones
D6
DB5
28
O
D5
All ones
D5
DB4
29
O
D4
All ones
D4
DB3
30
O
D3
All ones
D3
DB2
31
O
D2
All ones
D2
DB1
32
O
D1
All ones
D1
DB0
33
O
D0 (LSB)
All ones
D0 (LSB)
–IN
7
I
Inverting input channel
+IN
6
I
Non inverting input channel
NC
3
-
No connection
REFIN
1
I
Reference input
REFM
47, 48
I
Reference ground
REFOUT
2
O
Reference output. Add 1 F capacitor between the REFOUT pin and REFM pin when internal reference
is used.
RESET
38
I
Current conversion is aborted and output latches are cleared (set to zeros) when this pin is asserted
low. RESET works independantly of CS.
RD
41
I
Synchronization pulse for the parallel output. When CS is low, this serves as the output enable and puts
the previous conversion result on the bus.
+VA
4, 9, 10, 13,
-
Analog power supplies, 5-V dc
43, 46
+VBD
24, 34, 37
-
Digital power supply for bus
8
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