- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄17031 > DC1783A-G (Linear Technology)BOARD SAR ADC LTC2377-18 PDF資料下載
參數(shù)資料
| 型號： | DC1783A-G |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 6/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD SAR ADC LTC2377-18 |
| 軟件下載： | QuikEval II System |
| 設(shè)計(jì)資源： | DC1783A Design Files DC1783A Schematic |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuikEval™ |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 18 |
| 采樣率（每秒）： | 500k |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 輸入范圍： | ±VREF |
| 在以下條件下的電源（標(biāo)準(zhǔn)）： | 6.8mW @ 500kSPS |
| 工作溫度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2377-18 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | DC1075A-ND - BOARD COMPANION DC1216A-B-ND - BOARD EVAL 122.88MHZ CLOCK LTC2377IMS-16#TRPBF-ND - IC ADC 16BIT SPI 500KSPS 16MSOP LTC2377IMS-16#PBF-ND - IC ADC 16BIT SPI 500KSPS 16MSOP LTC2377IDE-16#TRPBF-ND - IC ADC 16BIT SPI 500KSPS 16DFN LTC2377IDE-16#PBF-ND - IC ADC 16BIT SPI 500KSPS 16DFN LTC2377HMS-16#TRPBF-ND - IC ADC 16BIT SPI 500KSPS 16MSOP LTC2377HMS-16#PBF-ND - IC ADC 16BIT SPI 500KSPS 16MSOP LTC2377CDE-16#TRPBF-ND - IC ADC 16BIT SPI 500KSPS 16DFN LTC2377CDE-16#PBF-ND - IC ADC 16BIT SPI 500KSPS 16DFN 更多... |
LTC2377-18
14
237718f
Figure 11. 32k Point FFT with fIN = 2kHz of the LTC2377-18
FREQUENCY (kHz)
0
50
100
150
250
200
–180
AMPLITUDE
(dBFS)
–60
–40
–20
–80
–100
–120
–140
–160
0
237718 F11
SNR = 102.3dB
THD = –124dB
SINAD = 102.2dB
SFDR = 125dB
SNR = 102.3dB
THD = –124dB
SINAD = 102.2dB
SFDR = 125dB
APPLICATIONS INFORMATION
0μA to a maximum of 0.4mA at 500ksps. This step in DC
current draw triggers a transient response in the reference
that must be considered since any deviation in the refer-
ence output voltage will affect the accuracy of the output
code. In applications where the transient response of the
reference is important, the fast settling LTC6655-5 refer-
ence is also recommended.
DYNAMIC PERFORMANCE
Fast Fourier Transform (FFT) techniques are used to test
the ADC’s frequency response, distortion and noise at the
rated throughput. By applying a low distortion sine wave
and analyzing the digital output using an FFT algorithm,
the ADC’s spectral content can be examined for frequen-
cies outside the fundamental. The LTC2377-18 provides
guaranteed tested limits for both AC distortion and noise
measurements.
Signal-to-Noise and Distortion Ratio (SINAD)
The signal-to-noise and distortion ratio (SINAD) is the
ratio between the RMS amplitude of the fundamental input
frequency and the RMS amplitude of all other frequency
components at the A/D output. The output is band-limited
to frequencies from above DC and below half the sampling
frequency. Figure 11 shows that the LTC2377-18 achieves
a typical SINAD of 102dB at a 500kHz sampling rate with
a 2kHz input.
Signal-to-Noise Ratio (SNR)
The signal-to-noise ratio (SNR) is the ratio between the
RMS amplitude of the fundamental input frequency and
the RMS amplitude of all other frequency components
except the first five harmonics and DC. Figure 11 shows
that the LTC2377-18 achieves a typical SNR of 102dB at
a 500kHz sampling rate with a 2kHz input.
Total Harmonic Distortion (THD)
Total Harmonic Distortion (THD) is the ratio of the RMS sum
of all harmonics of the input signal to the fundamental itself.
The out-of-band harmonics alias into the frequency band
between DC and half the sampling frequency (fSMPL/2).
THD is expressed as:
THD
=20log
V2
2 + V32 + V42 +…+ V
N
2
V1
where V1 is the RMS amplitude of the fundamental fre-
quency and V2 through VN aretheamplitudesofthesecond
through Nth harmonics.
POWER CONSIDERATIONS
The LTC2377-18 provides two power supply pins: the
2.5V power supply (VDD), and the digital input/output
interface power supply (OVDD). The flexible OVDD supply
allows the LTC2377-18 to communicate with any digital
logic operating between 1.8V and 5V, including 2.5V and
3.3V systems.
Power Supply Sequencing
The LTC2377-18 does not have any specific power supply
sequencing requirements. Care should be taken to adhere
to the maximum voltage relationships described in the
Absolute Maximum Ratings section. The LTC2377-18
has a power-on-reset (POR) circuit that will reset the
LTC2377-18 at initial power-up or whenever the power
supply voltage drops below 1V. Once the supply voltage
re-enters the nominal supply voltage range, the POR will
reinitialize the ADC. No conversions should be initiated
until 20μs after a POR event to ensure the reinitialization
period has ended. Any conversions initiated before this
time will produce invalid results.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EVAL-AD7677CBZ | BOARD EVALUATION FOR AD7677 |
| EVAL-AD7671CBZ | BOARD EVALUATION FOR AD7671 |
| 94SVP337X0016F12 | CAP ALUM 330UF 16V 20% SMD |
| EVAL-AD7654CBZ | BOARD EVALUATION FOR AD7654 |
| STD17W-P | WIRE & CABLE MARKERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DC1783A-H | 功能描述:BOARD SAR ADC LTC2376-18 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:QuikEval™ 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| DC1785A | 功能描述:BOARD DEMO LTC2991 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 傳感器 系列:QuikEval™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| DC1785A | 制造商:Linear Technology 功能描述:EVAL BOARD, LTC2991 TEMP, VOLTAGE, CURRE |
| DC1786A | 功能描述:BOARD DEMO LTC2871 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:電信，線路接口單元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要屬性:T1/J1/E1 LIU 次要屬性:- 已供物品:板，電源，線纜，CD 其它名稱:82EBV2081 |
| DC1788A-B | 制造商:Linear Technology 功能描述:EVAL BOARD, LT4275B POE & PD CONTROLLER, Silicon Manufacturer:Linear Technology, |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。