參數(shù)資料
型號(hào)： MAX132
廠商： Maxim Integrated Products, Inc.
英文描述： 18-Bit ADC with Serial Interface(±18-BIT，單通道，具有串行接口的ADC)
中文描述： ±18位ADC，串行接口
文件頁(yè)數(shù)： 10/16頁(yè)
文件大?。?/td> 168K
代理商： MAX132
M
±18-Bit ADC with S erial Interfac e
10
______________________________________________________________________________________
___________________Digital Interfac e
Serial data at DIN is sent in 8-bit packets and is shifted
into the internal 8-bit shift register with each rising edge
of SCLK. The data is then latched into either command
input register 0 or command input register 1, as deter-
mined by the LSB of the data sent, and is latched on
the rising edge of CHIP SELECT (CS) Data is clocked
out of the selected output register on each falling edge
of SCLK. D7(MSB) must be the first data bit to be shift-
ed in and is the first bit to be shifted out.
Output data is shifted out at the same time command
data is shifted in. Command data must be clocked in
on the previous 8-bit read-write cycle to receive con-
version data in the present cycle.
Since there is no internal power-on reset, initialize the
MAX132 immediately after power-up to insure correct
operation.
Table 2 defines each bit of five registers: the two com-
mand input registers, output register 0, output register
1, and the status output register.
Command Input Register 0
Register-Set Bits
Data bits D1 and D2 of command register 0 (RS1 and
RS0) determine the data to be read on the data bus.
These bits select which register outputs data to the bus.
Table 3 defines the bit values that determine which reg-
ister is read on the next cycle (Figure 9).
Read-Zero Bit
The read-zero bit allows the ADC to calibrate on com-
mand for zero offset. The read-zero bit, when set to 1,
internally shorts the inputs; when a start-conversion
command is given, the zero error is converted. Subtract
the results from the standard external measurement
conversion when the read-zero conversion ends. If the
read-zero bit is set to 0, the converter measures the
voltage between IN Hl and IN LO once a start bit is
given. Take a new zero reading periodically and when-
ever the ambient temperature, the reference voltage, or
the common-mode input voltage are changed.
Table 3. Register Set-Bit Definitions
START,
READ STATUS
CYCLE 1
REGISTER
INSTRUCTION
(DATA IN)
OUTPUT DATA
OUTPUT STATUS
REGISTER
(EOC, POLARITY, B2–B0)
READ HIGHER
BITS
CYCLE 2
REGISTER 1
( B11–B18)
READ LOWER
BITS
CYCLE 3
REGISTER 0
( B3–B10)
START,
READ STATUS
CYCLE 4
Figure 9. Instruction and Data Sequencing
RS1
0
0
1
RS0
0
1
0
DEFINITIONS
Selects Register 0; output for data bits B3–B10
Selects Register 1; output for data bits B11–B18
Selects Register 2; output status for data bits
B0–B2, polarity, sleep, integrating, EOC, and
collision bit
Invalid data
1
1
Command Input
Register 0
Command Input
Register 1
Output Register 0
RS1 = 0, RS0 = 0
Output Register 1
RS1 = 0, RS0 = 1
REGISTER
“1”
“0”
Start
Convert
Returns to
0 at EOC
Set P3
Output
“1”
50Hz
60Hz
Set P2
Output
B10
B18
MSB
Collision
B9
B17
EOC
Sleep
Awake
Set P1
Output
B8
B16
Integrating
Input
Table 2. Register Map of Input and Output Data
Read Zero
Read V
IN
Set P0
Output
Don’t Care
Don’t Care
Don’t Care
RS0*
Don’t Care
B7
B15
Sleep
B6
B14
-Polarity
RS1*
Don’t Care
B5
B13
B4
B12
DATA BIT
D4
0
1
B3
B11
Output Status
Register
RS1 = 1, RS0 = 0
“0”
No Collision Converting
Not
Integrating
Awake
+Polarity
B2
B1
B0
LSB
*Note
: Refer to Table 3.
D7
D6
D5
D3
D2
D1
D0
相關(guān)PDF資料
PDF描述
MAX133 3 3/4 Digital ADC(3 3/4 位數(shù)字ADC)
MAX139 3 1/2 Digital ADC(3 1/2位數(shù)，具有能隙基準(zhǔn)源ADC)
MAX1479 300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter
MAX1479ATE 300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter
MAX1480A Complete, Isolated RS-485/RS-422 Data Interface(半雙工，完全隔離的RS-485/422收發(fā)器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX13202EALT+ 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:ESD PROTECTORS 6PIN UDFN - Rail/Tube
MAX13202EALT+T 功能描述:TVS二極管陣列 2Ch ESD Protection Diode Array RoHS:否 制造商:Littelfuse 極性: 通道:4 Channels 擊穿電壓: 鉗位電壓:11.5 V 工作電壓:2.5 V 峰值浪涌電流:20 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 系列: 最小工作溫度:- 40 C 最大工作溫度:+ 85 C
MAX13204EALT 制造商:Maxim Integrated Products 功能描述:LOW-CAPACITANCE 4-/6-/8-CHANNEL + - Rail/Tube
MAX13204EALT+ 制造商:Maxim Integrated Products 功能描述: 制造商:Rochester Electronics LLC 功能描述:
MAX13204EALT+T 功能描述:TVS二極管陣列 4Ch ESD Protection Diode Array RoHS:否 制造商:Littelfuse 極性: 通道:4 Channels 擊穿電壓: 鉗位電壓:11.5 V 工作電壓:2.5 V 峰值浪涌電流:20 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 系列: 最小工作溫度:- 40 C 最大工作溫度:+ 85 C
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*