参数资料
| 型号： | LTC2229IUH#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12-BIT 80MSPS 3V 32-QFN |
| 标准包装： | 73 |
| 位数： | 12 |
| 采样率（每秒）： | 80M |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 246mW |
| 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： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 管件 |
| 输入数目和类型： | 1 个单端，双极; 1 个差分，双极 |
LTC2229
15
2229fa
APPLICATIO S I FOR ATIO
WU
UU
Input Range
The input range can be set based on the application. The
2V input range will provide the best signal-to-noise perfor-
mance while maintaining excellent SFDR. The 1V input
range will have better SFDR performance, but the SNR will
degrade by 4dB.
Driving the Clock Input
The CLK input can be driven directly with a CMOS or TTL
level signal. A sinusoidal clock can also be used along with
a low-jitter squaring circuit before the CLK pin (see
Figure 11).
The noise performance of the LTC2229 can depend on the
clock signal quality as much as on the analog input. Any
noise present on the clock signal will result in additional
aperture jitter that will be RMS summed with the inherent
ADC aperture jitter.
In applications where jitter is critical, such as when digitiz-
ing high input frequencies, use as large an amplitude as
possible. Also, if the ADC is clocked with a sinusoidal
signal, filter the CLK signal to reduce wideband noise and
distortion products generated by the source.
The 1.5V bandgap reference serves two functions: its
output provides a DC bias point for setting the common
mode voltage of any external input circuitry; additionally,
the reference is used with a difference amplifier to gener-
ate the differential reference levels needed by the internal
ADC circuitry. An external bypass capacitor is required for
the 1.5V reference output, VCM. This provides a high
frequency low impedance path to ground for internal and
external circuitry.
The difference amplifier generates the high and low refer-
ence for the ADC. High speed switching circuits are
connected to these outputs and they must be externally
bypassed. Each output has two pins. The multiple output
pins are needed to reduce package inductance. Bypass
capacitors must be connected as shown in Figure 9.
Other voltage ranges in-between the pin selectable ranges
can be programmed with two external resistors as shown
in Figure 10. An external reference can be used by applying
its output directly or through a resistor divider to SENSE.
It is not recommended to drive the SENSE pin with a logic
device. The SENSE pin should be tied to the appropriate
level as close to the converter as possible. If the SENSE pin
is driven externally, it should be bypassed to ground as
close to the device as possible with a 1
F ceramic capacitor.
Figure 10. 1.5V Range ADC
Figure 11. Sinusoidal Single-Ended CLK Drive
VCM
SENSE
1.5V
0.75V
2.2
F
12k
1
F
12k
2229 F10
LTC2229
CLK
50
0.1
F
0.1
F
4.7
F
1k
FERRITE
BEAD
CLEAN
SUPPLY
SINUSOIDAL
CLOCK
INPUT
2229 F11
NC7SVU04
LTC2229
相关PDF资料 |
PDF描述 |
|---|---|
| LTC2231IUP#TRPBF | IC ADC 10BIT 135MSPS 64-QFN |
| LTC2233CUK#TRPBF | IC ADC 10BIT 80MSPS SAMPL 48QFN |
| LTC2234IUK#TRPBF | IC ADC 10BIT 135MSPS SAMPL 48QFN |
| LTC2237IUH#TRPBF | IC ADC 10BIT 40MSPS 3V 32-QFN |
| LTC2239CUH#PBF | IC ADC 10-BIT 80MSPS 3V 32-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC222CJ | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches |
| LTC222CN | 功能描述:IC SWITCH QUAD SPST 16DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| LTC222CN#PBF | 功能描述:IC SWITCH QUAD SPST 16DIP RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:48 系列:- 功能:开关 电路:4 x SPST - NO 导通状态电阻:100 欧姆 电压电源:单/双电源 电压 - 电源，单路/双路(±):2 V ~ 12 V，±2 V ~ 6 V 电流 - 电源:50nA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
| LTC222CS | 功能描述:IC SWITCH QUAD SPST 16SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| LTC222CS#PBF | 功能描述:IC SWITCH QUAD SPST 16SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
发布紧急采购，3分钟左右您将得到回复。