- 您现在的位置：买卖IC网 > PDF目录10254 > LTC2288CUP#TRPBF (Linear Technology)IC ADC DUAL 10BIT 65MSPS 64QFN PDF资料下载
参数资料
| 型号： | LTC2288CUP#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 14/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC DUAL 10BIT 65MSPS 64QFN |
| 标准包装： | 2,000 |
| 位数： | 10 |
| 采样率（每秒）： | 65M |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 450mW |
| 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： | 64-WFQFN 裸露焊盘 |
| 供应商设备封装： | 64-QFN（9x9） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个单端，双极; 2 个差分, 双极 |
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页当前第14页第15页第16页第17页第18页第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
LTC2288/LTC2287/LTC2286
21
228876fa
228876 F14
OVDD
VDD
0.1
F
43
TYPICAL
DATA
OUTPUT
OGND
OVDD
0.5V
TO 3.6V
PREDRIVER
LOGIC
DATA
FROM
LATCH
OE
LTC2288/LTC2287/LTC2286
An optional clock duty cycle stabilizer circuit can be used
if the input clock has a non 50% duty cycle. This circuit
uses the rising edge of the CLK pin to sample the analog
input. The falling edge of CLK is ignored and the internal
falling edge is generated by a phase-locked loop. The
input clock duty cycle can vary from 40% to 60% and the
clock duty cycle stabilizer will maintain a constant 50%
internal duty cycle. If the clock is turned off for a long
period of time, the duty cycle stabilizer circuit will require
a hundred clock cycles for the PLL to lock onto the input
clock. To use the clock duty cycle stabilizer, the MODE pin
should be connected to 1/3VDD or 2/3VDD using external
resistors. The MODE pin controls both Channel A and
Channel B—the duty cycle stabilizer is either on or off for
both channels.
The lower limit of the LTC2288/LTC2287/LTC2286 sample
rate is determined by droop of the sample-and-hold cir-
cuits. The pipelined architecture of this ADC relies on
storing analog signals on small valued capacitors. Junc-
tion leakage will discharge the capacitors. The specified
minimum operating frequency for the LTC2288/LTC2287/
LTC2286 is 1Msps.
DIGITAL OUTPUTS
Table 1 shows the relationship between the analog input
voltage, the digital data bits, and the overflow bit.
Table 1. Output Codes vs Input Voltage
AIN+ – AIN–
D9 – D0
(2V Range)
OF
(Offset Binary)
(2’s Complement)
>+1.000000V
1
11 1111 1111
01 1111 1111
+0.998047V
0
11 1111 1111
01 1111 1111
+0.996094V
0
11 1111 1110
01 1111 1110
+0.001953V
0
10 0000 0001
00 0000 0001
0.000000V
0
10 0000 0000
00 0000 0000
–0.001953V
0
01 1111 1111
11 1111 1111
–0.003906V
0
01 1111 1110
11 1111 1110
–0.998047V
0
00 0000 0001
10 0000 0001
–1.000000V
0
00 0000 0000
10 0000 0000
<–1.000000V
1
00 0000 0000
10 0000 0000
Digital Output Buffers
Figure 14 shows an equivalent circuit for a single output
buffer. Each buffer is powered by OVDD and OGND, iso-
lated from the ADC power and ground. The additional
N-channel transistor in the output driver allows operation
down to low voltages. The internal resistor in series with
the output makes the output appear as 50
to external
circuitry and may eliminate the need for external damping
resistors.
Figure 14. Digital Output Buffer
APPLICATIO S I FOR ATIO
WU
UU
As with all high speed/high resolution converters, the digi-
tal output loading can affect the performance. The digital
outputs of the LTC2288/LTC2287/LTC2286 should drive a
minimal capacitive load to avoid possible interaction
between the digital outputs and sensitive input circuitry.
The output should be buffered with a device such as an
ALVCH16373 CMOS latch. For full speed operation the
capacitive load should be kept under 10pF.
Lower OVDD voltages will also help reduce interference
from the digital outputs.
相关PDF资料 |
PDF描述 |
|---|---|
| MS27467T13B8PC | CONN PLUG 8POS STRAIGHT W/PINS |
| LTC2226CUH#TRPBF | IC ADC 12BIT 25MSPS SAMPL 32-QFN |
| MS27473T12B35P | CONN PLUG 22POS STRAIGHT W/PINS |
| MS27508E16B35PB | CONN RCPT 55POS BOX MNT W/PINS |
| AD7787BRM | IC ADC 24BIT LP 2CH SIG 10-MSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2288IUP | 制造商:Linear Technology 功能描述:ADC Dual Pipelined 65Msps 10-bit Parallel 64-Pin QFN EP |
| LTC2288IUP#PBF | 功能描述:IC ADC DUAL 10BIT 65MSPS 64QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 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:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| LTC2288IUP#TRPBF | 功能描述:IC ADC DUAL 10BIT 65MSPS 64QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 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:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| LTC2288UP | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 10-Bit, 65/40/25Msps Low Noise 3V ADCs |
| LTC2289 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 10-Bit, 80Msps Low Noise 3V ADC |
发布紧急采购，3分钟左右您将得到回复。