參數(shù)資料
型號(hào)： LTC2204IUK#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： ADC
英文描述： 16-Bit, 40Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: -40°C to +85°C
中文描述： 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48
封裝： 7 X 7 MM, LEAD FREE, PLASTIC, MO-220WKKD-2, QFN-48
文件頁(yè)數(shù)： 17/36頁(yè)
文件大?。?/td> 1367K
代理商： LTC2204IUK#TRPBF
LTC2205/LTC2204
24
22054fc
PGA Pin
The PGA pin selects between two gain settings for
the ADC front-end. PGA = 0 selects an input range of
2.25VP-P; PGA = 1 selects an input range of 1.5VP-P. The
2.25V input range has the best SNR; however, the distortion
will be higher for input frequencies above 100MHz. For
applications with high input frequencies, the low input
range will have improved distortion; however, the SNR
will be worse by up to approximately 2dB to 6dB. See the
typical performance curves section.
Driving the Encode Inputs
ThenoiseperformanceoftheLTC2205/LTC2204candepend
on the encode signal quality as much as on the analog input.
The encode inputs are intended to be driven differentially,
primarily for noise immunity from common mode noise
sources. Each input is biased through a 6k resistor to a
1.6V bias. The bias resistors set the DC operating point
for transformer coupled drive circuits and can set the logic
threshold for single-ended drive circuits.
Any noise present on the encode signal will result in
additional aperture jitter that will be RMS summed with
the inherent ADC aperture jitter.
In applications where jitter is critical (high input
frequencies), take the following into consideration:
1. Differential drive should be used.
2. Use as large an amplitude possible. If using transformer
coupling, use a higher turns ratio to increase the
amplitude.
3. If the ADC is clocked with a xed frequency sinusoidal
signal, lter the encode signal to reduce wideband
noise.
4. Balance the capacitance and series resistance at both
encode inputs such that any coupled noise will appear
at both inputs as common mode noise.
The encode inputs have a common mode range of 1.2V
to 3V. Each input may be driven from ground to VDD for
single-ended drive.
Figure 8. Transformer Driven Encode
VDD
LTC2205/
LTC2204
22054 F08
VDD
ENC–
ENC+
1.6V
ETC1-1T
0.1μF
33pF
ENCODE
INPUT
6k
100Ω
50Ω
TO INTERNAL
ADC CLOCK
DRIVERS
0.1μF
50Ω
APPLICATIONS INFORMATION
相關(guān)PDF資料
PDF描述
LTC2205CUK#PBF 16-Bit, 65Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C
LTC2205CUK#TRPBF 16-Bit, 65Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C
LTC2205IUK#PBF 16-Bit, 65Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: -40°C to +85°C
LTC2205IUK#TRPBF 16-Bit, 65Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: -40°C to +85°C
LTC2205CUK-14#TRPBF 16-Bit, 65Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2204UK 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps
LTC2205 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps
LTC2205-14 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit, 65Msps ADC
LTC2205CUK 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps
LTC2205CUK#PBF 制造商:Linear Technology 功能描述:ADC Single Pipelined 65Msps 16-bit Parallel 48-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 16-BIT 65MSPS 48-QFN 制造商:Linear Technology 功能描述:ADC 16BIT 65MSPS 48QFN 制造商:Linear Technology 功能描述:IC ADC 16BIT 65MSPS QFN-48 制造商:Linear Technology 功能描述:IC, ADC, 16BIT, 65MSPS, QFN-48; Resolution (Bits):16bit; Sampling Rate:65MSPS; Supply Voltage Type:Single; Supply Voltage Min:3.135V; Supply Voltage Max:3.465V; Supply Current:185mA; Digital IC Case Style:QFN; No. of Pins:48 ;RoHS Compliant: Yes
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