- 您现在的位置：买卖IC网 > PDF目录9915 > MAX1280BCUP+T (Maxim Integrated Products)IC ADC 12BIT 400KSPS 20-TSSOP PDF资料下载
参数资料
| 型号： | MAX1280BCUP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 400KSPS 20-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 位数： | 12 |
| 采样率（每秒）： | 400k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 559mW |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 8 个单端，单极；8 个单端，双极；4 个伪差分，单极；4 个伪差分，双极 |
MAX1280/MAX1281
400ksps/300ksps, Single-Supply, Low-Power, 8-Channel,
Serial 12-Bit ADCs with Internal Reference
______________________________________________________________________________________
13
high for one clock period before the MSB of the 12-bit
conversion result is shifted out of DOUT. Varying the
analog input to CH7 will alter the sequence of bits from
DOUT. A total of 16 clock cycles is required per con-
version. All transitions of the SSTRB and DOUT outputs
typically occur 20ns after the rising edge of SCLK.
Starting a Conversion
Start a conversion by clocking a control byte into DIN.
With CS low, each rising edge on SCLK clocks a bit from
DIN into the MAX1280/MAX1281’s internal shift register.
After CS falls, the first arriving logic “1” bit defines the
control byte’s MSB. Until this first “start” bit arrives, any
number of logic “0” bits can be clocked into DIN with no
effect. Table 1 shows the control-byte format.
The MAX1280/MAX1281 are compatible with SPI/QSPI
and MICROWIRE devices. For SPI, select the correct
clock polarity and sampling edge in the SPI control reg-
isters: set CPOL = 0 and CPHA = 0. MICROWIRE, SPI,
and QSPI all transmit a byte and receive a byte at the
same time. Using the Typical Operating Circuit, the
simplest software interface requires only three 8-bit
transfers to perform a conversion (one 8-bit transfer to
configure the ADC, and two more 8-bit transfers to
clock out the 12-bit conversion result). See Figure 17
for MAX1280/MAX1281 QSPI connections.
Simple Software Interface
Make sure the CPU’s serial interface runs in master
mode, so the CPU generates the serial clock. Choose a
clock frequency from 500kHz to 6.4MHz (MAX1280) or
4.8MHz (MAX1281).
1) Set up the control byte and call it TB1. TB1 should
be of the format 1XXXXXXX binary, where the Xs
denote the particular channel, selected conversion
mode, and power mode.
2) Use a general-purpose I/O line on the CPU to pull
CS low.
3) Transmit TB1 and, simultaneously, receive a byte
and call it RB1. Ignore RB1.
4) Transmit a byte of all zeros ($00 hex) and, simultane-
ously, receive byte RB2.
5) Transmit a byte of all zeros ($00 hex) and, simultane-
ously, receive byte RB3.
6) Pull CS high.
Figure 6 shows the timing for this sequence. Bytes RB2
and RB3 contain the result of the conversion, padded
with three leading zeros and one trailing zero. The total
conversion time is a function of the serial-clock fre-
quency and the amount of idle time between 8-bit
transfers. To avoid excessive T/H droop, make sure the
total conversion time does not exceed 120s.
Digital Output
In unipolar input mode, the output is straight binary
(Figure 14). For bipolar input mode, the output is two’s
complement (Figure 15). Data is clocked out on the ris-
ing edge of SCLK in MSB-first format.
18
4
9
12
16
24
20
DIN
tACQ
SEL
2
SEL
1
SEL
0
UNI/
BIP
PD1 PD0
RB1
SCLK
START
SSTRB
HIGH-Z
DOUT
CS
B6
B8
B7
B9
B10
B11
B1
B0
B2
B3
B5
B4
RB2
CONVERSION
IDLE
ACQUISITION
RB3
SGL/
DIF
HIGH-Z
Figure 6. Single-Conversion Timing
相关PDF资料 |
PDF描述 |
|---|---|
| D38999/26WE26SD | CONN PLUG 26POS STRAIGHT W/SCKT |
| IDT723656L15PF | IC FIFO SYNC 4096X36 128QFP |
| MAX1229BEEP+T | IC ADC 12BIT 300KSPS 20-QSOP |
| ICL3223EIAZ | IC 2DRVR/2RCVR RS232 3V 20-SSOP |
| MAX1228BEEP+T | IC ADC 12BIT 300KSPS 20-QSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1280BEUP | 功能描述:模数转换器 - 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 |
| MAX1280BEUP+ | 功能描述:模数转换器 - ADC 12-Bit 8Ch 400ksps 5.5V 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 |
| MAX1280BEUP+T | 功能描述:模数转换器 - ADC 12-Bit 8Ch 400ksps 5.5V 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 |
| MAX1280BEUP-T | 功能描述:模数转换器 - 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 |
| MAX1280EVC16 | 功能描述:数据转换 IC 开发工具 MAX1280 Eval System RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
发布紧急采购，3分钟左右您将得到回复。