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参数资料
| 型号： | LTC2207CUK-14#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | ADC |
| 英文描述： | 16-Bit, 105Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C |
| 中文描述： | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48 |
| 封装： | 7 X 7 MM, LEAD FREE, PLASTIC, MO-220WKKD-2, QFN-48 |
| 文件页数： | 18/32页 |
| 文件大小： | 1237K |
| 代理商： | LTC2207CUK-14#PBF |
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LTC2207-14/LTC2206-14
25
220714614fc
Figure 14. Functional Equivalent Block Diagram of Internal Dither Circuit
+–
AIN–
AIN+
S/H
AMP
DIGITAL
SUMMATION
OUTPUT
DRIVERS
MULTIBIT DEEP
PSEUDO-RANDOM
NUMBER
GENERATOR
14-BIT
PIPELINED
ADC CORE
PRECISION
DAC
CLOCK/DUTY
CYCLE
CONTROL
CLKOUT
OF
D13
D0
ENC
DITHER ENABLE
HIGH = DITHER ON, LOW = DITHER OFF
DITH
ENC
ANALOG
INPUT
2207614 F14
LTC2207-14/LTC2206-14
As shown in Figure 14, the output of the sample-and-hold
amplier is summed with the output of a dither DAC. The
dither DAC is driven by a long sequence pseudo-random
number generator; the random number fed to the dither
DAC is also subtracted from the ADC result. If the dither
DAC is precisely calibrated to the ADC, very little of the
dither signal will be seen at the output. The dither signal
that does leak through will appear as white noise. The dither
DAC is calibrated to result in less than 0.5dB elevation in
the noise oor of the ADC, as compared to the noise oor
with dither off.
Grounding and Bypassing
The LTC2207-14/LTC2206-14 require a printed circuit board
with a clean unbroken ground plane; a multilayer board
with an internal ground plane is recommended. The pinout
of the LTC2207-14/LTC2206-14 has been optimized for a
owthrough layout so that the interaction between inputs
and digital outputs is minimized. Layout for the printed
circuit board should ensure that digital and analog signal
lines are separated as much as possible. In particular, care
should be taken not to run any digital track alongside an
analog signal track or underneath the ADC.
High quality ceramic bypass capacitors should be used
at the VDD, VCM, and OVDD pins. Bypass capacitors must
be located as close to the pins as possible. The traces
connecting the pins and bypass capacitors must be kept
short and should be made as wide as possible.
The LTC2207-14/LTC2206-14 differential inputs should run
parallel and close to each other. The input traces should
be as short as possible to minimize capacitance and to
minimize noise pickup.
Heat Transfer
Most of the heat generated by the LTC2207-14/LTC2206-
14 is transferred from the die through the bottom-side
exposed pad. For good electrical and thermal performance,
the exposed pad must be soldered to a large grounded
pad on the PC board. It is critical that the exposed pad
and all ground pins are connected to a ground plane of
sufcient area with as many vias as possible.
APPLICATIONS INFORMATION
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PDF描述 |
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| LTC2207CUK-14#TRPBF | 16-Bit, 105Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C |
| LTC2207IUK-14#PBF | 16-Bit, 105Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: -40°C to +85°C |
| LTC2207IUK-14#TRPBF | 16-Bit, 105Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: -40°C to +85°C |
| LTC2206CUK#PBF | 16-Bit, 80Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C |
| LTC2206CUK#TRPBF | 16-Bit, 80Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2207IUK | 制造商:Linear Technology 功能描述:ADC Single Pipelined 105Msps 16-bit Parallel 48-Pin QFN EP |
| LTC2207IUK#PBF | 制造商:Linear Technology 功能描述:ADC Single Pipelined 105Msps 16-bit Parallel 48-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 16-BIT 105MSPS 48-QFN 制造商:Linear Technology 功能描述:ADC 16BIT 105MSPS 48QFN 制造商:Linear Technology 功能描述:IC, ADC, 16BIT, 105MSPS, QFN-48; Resolution (Bits):16bit; Sampling Rate:105MSPS; Supply Voltage Type:Single; Supply Voltage Min:3.135V; Supply Voltage Max:3.465V; Supply Current:273mA; Digital IC Case Style:QFN; No. of Pins:48 ;RoHS Compliant: Yes |
| LTC2207IUK#TRPBF | 制造商:Linear Technology 功能描述:ADC Single Pipelined 105Msps 16-bit Parallel 48-Pin QFN EP T/R 制造商:Linear Technology 功能描述:IC ADC 16BIT 105MSPS 48-QFN |
| LTC2207IUK-14 | 制造商:Linear Technology 功能描述:ADC Single Pipelined 105Msps 14-bit Parallel 48-Pin QFN EP |
| LTC2207IUK-14#PBF | 功能描述:IC ADC 14BIT 105MSPS 48-QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:250 系列:- 位数:12 采样率（每秒）:1.8M 数据接口:并联 转换器数目:1 功率耗散（最大）:1.82W 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-LQFP 供应商设备封装:48-LQFP（7x7） 包装:管件 输入数目和类型:2 个单端，单极 |
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