- 您现在的位置：买卖IC网 > PDF目录2083 > LTC2258IUJ-14#TRPBF (Linear Technology)IC ADC 14BIT 65MSPS 1.8V 40-QFN PDF资料下载
参数资料
| 型号： | LTC2258IUJ-14#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 19/34页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT 65MSPS 1.8V 40-QFN |
| 产品培训模块： | LTC2262 - Ultra Low Power High Speed ADCs |
| 标准包装： | 2,000 |
| 位数： | 14 |
| 采样率（每秒）： | 65M |
| 数据接口： | 并联，串行，SPI |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 90mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-QFN（6x6） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个差分 |
| 配用： | DC718C-ND - DEMO QUIKEVAL-II DATA |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页当前第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页
LTC2258-14
LTC2257-14/LTC2256-14
26
225814fc
For more information www.linear.com/LTC2258-14
applicaTions inForMaTion
Serial Programming Mode
To use the serial programming mode, PAR/SER should be
tied to ground. The CS, SCK, SDI and SDO pins become a
serialinterfacethatprogramtheA/Dmodecontrolregisters.
Data is written to a register with a 16-bit serial word. Data
can also be read back from a register to verify its contents.
Serial data transfer starts when CS is taken low. The data
on the SDI pin is latched at the first 16 rising edges of
SCK. Any SCK rising edges after the first 16 are ignored.
The data transfer ends when CS is taken high again.
The first bit of the 16-bit input word is the R/W bit. The
next seven bits are the address of the register (A6:A0).
The final eight bits are the register data (D7:D0).
If the R/W bit is low, the serial data (D7:D0) will be writ-
ten to the register set by the address bits (A6:A0). If the
R/W bit is high, data in the register set by the address bits
(A6:A0) will be read back on the SDO pin (see the timing
diagrams). During a read back command the register is
not updated and data on SDI is ignored.
The SDO pin is an open-drain output that pulls to ground
with a 200 impedance. If register data is read back
through SDO, an external 2k pull-up resistor is required. If
serial data is only written and read back is not needed, then
SDO can be left floating and no pull-up resistor is needed.
Table 3 shows a map of the mode control registers.
Software Reset
If serial programming is used, the mode control registers
shouldbeprogrammedassoonaspossibleafterthepower
supplies turn on and are stable. The first serial command
must be a software reset which will reset all register data
bits to logic 0. To perform a software reset, bit D7 in the
reset register is written with a logic 1. After the reset SPI
write command is complete, bit D7 is automatically set
back to zero.
Table 3. Serial Programming Mode Register Map
REGISTER A0: RESET REGISTER (ADDRESS 00h)
D7
D6
D5
D4
D3
D2
D1
D0
RESET
X
Bit 7
RESET
Software Reset Bit
0 = Not Used
1 = Software Reset. All Mode Control Registers are Reset to 00h. This Bit is Automatically Set Back to Zero at the end of the SPI
Write Command.
The Reset Register is Write Only.
Bits 6-0
Unused, Don’t Care Bits.
REGISTER A1: POWER-DOWN REGISTER (ADDRESS 01h)
D7
D6
D5
D4
D3
D2
D1
D0
X
PWROFF1
PWROFF0
Bits 7-2
Unused, Don’t Care Bits.
Bits 1-0
PWROFF1:PWROFF0
Power Down Control Bits
00 = Normal Operation
01 = Nap Mode
10 = Not Used
11 = Sleep Mode
相关PDF资料 |
PDF描述 |
|---|---|
| LTC2261IUJ-12#TRPBF | IC ADC 12BIT 125MSPS 40-QFN |
| LTC2261IUJ-14#TRPBF | IC ADC 14BIT 125MSPS 40-QFN |
| LTC2283IUP#PBF | IC ADC DUAL 12BIT 125MSPS 64QFN |
| LTC2288IUP#PBF | IC ADC DUAL 10BIT 65MSPS 64QFN |
| LTC2293IUP#PBF | IC ADC DUAL 12BIT 65MSPS 64QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2258UJ-12 | 制造商:LINER 制造商全称:Linear Technology 功能描述:12-Bit, 65/40/2 5Msps Ultralow Power 1.8V ADCs |
| LTC2258UJ-14 | 制造商:LINER 制造商全称:Linear Technology 功能描述:14-Bit, 65/40/25Msps Ultralow Power 1.8V ADCs |
| LTC2259-12 | 制造商:LINER 制造商全称:Linear Technology 功能描述:12-Bit, 125/105/80Msps Ultralow Power 1.8V ADCs |
| LTC2259-14 | 制造商:LINER 制造商全称:Linear Technology 功能描述:16-Bit, 65Msps/40Msps/25Msps Low Power Dual ADCs |
| LTC2259-16 | 制造商:LINER 制造商全称:Linear Technology 功能描述:16-Bit, 80Msps Ultralow Power 1.8V ADC |
发布紧急采购，3分钟左右您将得到回复。