參數(shù)資料
型號(hào)： ADS8422IBPFBR
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： ADC
英文描述： 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
封裝： 9 X 9 MM, GREEN, PLASTIC, TQFP-48
文件頁(yè)數(shù)： 26/28頁(yè)
文件大?。?/td> 1310K
代理商： ADS8422IBPFBR
www.ti.com
PIN ASSIGNMENTS
23
BUSY
BDGND
+VBD
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
BDGND
13 14
1
2
3
4
5
6
7
8
9
10
11
12
REFIN
REFOUT
COMMOUT
+VA
AGND
+IN
IN
AGND
CAP1
+VAREG
NC
AGND
15 16 17 18
RD
CONVST
BYTE
RESET/PD1
47 46 45 44 43
48
42
REFM
+V
A
AGND
+V
A
CS
DB1
1
DB10
DB9
CAP2
AGND
DB15
DB14
DB13
DB12
40 39 38
41
19 20 21 22
DB8
36
35
34
33
32
31
30
29
28
27
26
25
+VBD
24
PD2
37
SLAS512B – JUNE 2006 – REVISED DECEMBER 2006
PFB Package
(Top View)
A.
NC - No connection
B.
Pins 9 and 13 are internally regulated 3-V outputs and are externally to be connected to decoupling capacitors only.
C.
+VAREG can be connected to a 3-V to 5-V supply.
D.
Pin 3 outputs REFIN/2
E.
Pin 38 can be used for ADC powerdown and pin 37 for analog output powerdown.
TERMINAL FUNCTIONS
NAME
NO
I/O
DESCRIPTION
5, 8, 12, 14,
AGND
–
Analog ground
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 select input. Used for 8-bit bus reading.
BYTE
39
I
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].
This pin outputs REFIN/2 and can be used to set the common-mode voltage of the differential analog input, (+IN +
COMMOUT
3
O
–IN)/2.
CONVST
40
I
Convert start. This input is low true and can act independent of the CS input.
CS
42
I
Chip select.
CAP1, CAP2
9, 13
O
Decoupling of internally generated 3-V supply. Add 1-
F capacitor from these pins to AGND.
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
7
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS8422IBPFBRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16 Bit MSPS Parallel ADC w/Ref RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8422IBPFBT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16 Bit MSPS Parallel ADC w/Ref RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8422IBPFBTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16 Bit MSPS Parallel ADC w/Ref RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8422IPFBR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 4MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8422IPFBRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 4MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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