参数资料
| 型号： | MAX1402CAI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/38页 |
| 文件大小： | 0K |
| 描述： | IC ADC 18BIT LP 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 位数： | 18 |
| 采样率（每秒）： | 480 |
| 数据接口： | QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 34mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 3 个差分，单极；3 个差分，双极；5 个伪差分，单极；5 个伪差分，双极 |
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MAX1402
+5V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
14
______________________________________________________________________________________
The MAX1402 can be configured to sequentially scan
all signal inputs and to transmit the results through the
serial interface with minimum communications over-
head. The output word contains a result identification
tag to indicate the source of each conversion result.
Serial Digital Interface
The serial digital interface provides access to eight on-
chip registers (Figure 3). All serial-interface commands
begin with a write to the communications register
(COMM). On power-up, system reset, or interface reset,
the part expects a write to its communications register.
The COMM register access begins with a 0 start bit.
The COMM register R/W bit selects a read or write
operation, and the register select bits (RS2, RS1, RS0)
select the register to be addressed. Hold DIN high
when not writing to COMM or another register (Table 1).
The serial interface consists of five signals: CS, SCLK,
DIN, DOUT, and INT. Clock pulses on SCLK shift bits
into DIN and out of DOUT. INT provides an indication
that data is available. CS is a device chip-select input
as well as a clock polarity select input (Figure 4). Using
CS allows the SCLK, DIN, and DOUT signals to be
shared among several SPI-compatible devices. When
short on I/O pins, connect CS low and operate the seri-
al digital interface in CPOL = 1, CPHA = 1 mode using
SCLK, DIN, and DOUT. This 3-wire interface mode is
ideal for opto-isolated applications. Furthermore, a
microcontroller (such as a PIC16C54 or 80C51) can
use a single bidirectional I/O pin for both sending to
DIN and receiving from DOUT (see Applications
Information), because the MAX1402 drives DOUT only
during a read cycle.
Additionally, connecting the INT signal to a hardware
interrupt allows faster throughput and reliable, collision-
free data flow.
The MAX1402 features a mode where the raw modula-
tor data output is accessible. In this mode the DOUT
and INT functions are reassigned (see the Modulator
Data Output section).
DATA REGISTER D1–D0/CID
RS0
GLOBAL SETUP REGISTER 1
GLOBAL SETUP REGISTER 2
SPECIAL FUNCTION REGISTER
XFER FUNCTION REGISTER 1
XFER FUNCTION REGISTER 2
XFER FUNCTION REGISTER 3
DATA REGISTER D17–D10
DATA REGISTER D9–D2
COMMUNICATIONS REGISTER
RS1
RS2
DIN
DOUT
REGISTER
SELECT
DECODER
Figure 3. Register Summary
DIN
(DURING
WRITE)*
DOUT
(DURING
READ)*
DS1, DS0
MSB D6
D5
D4
D3
D2
D1
D0
MSB D6
D5
D4
D3
D2
D1
D0
CS
INT
t10
t6
t20
t19
t8
t7
t17
t16
t3
t1
t13
t5
t4
t12
t18
t9
t11
t15
t14
SCLK
(CPOL = 1)
SCLK
(CPOL = 0)
*DOUT IS HIGH IMPEDANCE DURING THE WRITE CYCLE; DIN IS IGNORED
DURING THE READ CYCLE.
Figure 4. Serial-Interface Timing
Table 1. Control Register Addressing
0
RS1
0
RS0
0
1
Global Setup Register 1
0
1
0
1
Special Function Register
0
Global Setup Register 2
Communications Register
0
1
Transfer Function Register 2
1
0
1
Data Register
1
Transfer Function Register 3
Transfer Function Register 1
1
RS2
TARGET REGISTER
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1402EAI | 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| MAX1402EAI+ | 功能描述:模数转换器 - ADC 18-Bit 5Ch 4.8ksps 2.5V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1402EAI+T | 功能描述:模数转换器 - ADC 18-Bit 5Ch 4.8ksps 2.5V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1402EAI+TW | 功能描述:ADC / DAC多通道 +5V 18-Bit Low-Power Multichannel Oversampling (Sigma-Delta) ADC RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| MAX1402EAI+W | 功能描述:ADC / DAC多通道 +5V 18-Bit Low-Power Multichannel Oversampling (Sigma-Delta) ADC RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
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