參數(shù)資料
型號： LTC1426
廠商： Linear Technology Corporation
英文描述： 14-bit, 5V, 200KSPS, 4-Channel Unipolar ADC 20-TSSOP -40 to 85
中文描述： 微功率雙路6位PWM DAC的
文件頁數(shù)： 5/8頁
文件大?。?/td> 222K
代理商： LTC1426
5
LTC1426
BLOCK DIAGRA
M
W
APPLICATIO
S I
FOR
ATIO
U
Dual 6-Bit PWM DAC
Figure 1 shows a block diagram of the LTC1426. Each
6-bit PWM DAC is guaranteed monotonic and is digitally
adjustable in 64 equal steps, which corresponds from 0%
to 98.5% duty cycle full scale. At power-up, the counters
reset to 100000B and both DAC outputs assume midscale
duty cycle. The PWM outputs have an output impedance
W
U
U
PWM1
V
REF
PWM2
1426 F01
COMPARATOR
COMPARATOR
DRIVER
DRIVER
6-BIT
UP/DOWN
COUNTER
DEBOUNCE
CIRCUIT
6-BIT
UP
COUNTER
LATCH
AND
LOGIC
CONTROL
LOGIC
MODE SELECT
0 = PUSHBUTTON MODE
1 = PULSE MODE
6-BIT
UP/DOWN
COUNTER
6
6
6
POWER-ON
RESET
OSCILLATOR
SHDN
INPUT
CONDITIONING
CLK1
CLK2
Figure 1. LTC1426 Block Diagram
DEFU
LSB:
The least significant bit or the ideal duty cycle
difference between two successive codes.
LSB = DC
MAX
/64
DC
MAX
= The DAC output maximum duty cycle
Resolution:
The resolution is the number of DAC output
states (64) that divide the full-scale output duty cycle
range. The resolution does not necessarily imply linearity.
INL:
End point integral nonlinearity is the maximum devia-
tion from a straight line passing through the end points of
the DAC transfer curve. The INL error at a given code is
calculated as follows:
INL = (DC
OUT
– DC
IDEAL
)/LSB
DC
IDEAL
= (Code)(LSB)
DC
OUT
= the DAC output duty cycle measured at the
given number of clocked in pulses.
U
DNL:
Differential nonlinearity is the difference between the
measured duty cycle change and the ideal 1LSB duty cycle
change between any two adjacent codes. The DNL error
between any two codes is calculated as follows:
DNL = (
DC
OUT
– LSB)/LSB
DC
OUT
= The measured duty cycle difference between
two adjacent codes.
Full-Scale Error:
Full-scale error is the difference between
the ideal and measured DAC output duty cycles with all bits
set to one (Code = 63). The full-scale error is calculated as
follows:
FSE = (DC
OUT
– DC
IDEAL
)/LSB
DC
IDEAL
= DC
MAX
of less than 100
. The DAC outputs swing from 0V to the
reference voltage, V
REF
, which can be biased from 0V to
5.5V. The frequency of the DAC outputs is above 3kHz,
easing output filtering.
In the case of a pure resistive load, the voltage measured
across load RL is given by:
V = (V
PWM
)R
L
/(R
L
+ R
OUT
)
相關(guān)PDF資料
PDF描述
LTC1426C Micropower Dual 6-Bit PWM DAC
LTC1426CMS8 Micropower Dual 6-Bit PWM DAC
LTC1426CS8 14-Bit 200KSPS ADC Serial Out, Auto PWRDN, Pseudo Differential Input 8-SOIC -40 to 85
LTC1426I Micropower Dual 6-Bit PWM DAC
LTC1426IS8 14-Bit 200KSPS ADC Serial Out, Auto PWRDN, Pseudo Differential Input 8-MSOP -40 to 85
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1426CMS8 功能描述:IC PWM D/A CONV 6BIT DUAL 8-MSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散（最大）:2.7mW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-DFN-EP（4x3） 包裝:管件 輸出數(shù)目和類型:8 電壓，單極 采樣率（每秒）:*
LTC1426CMS8#PBF 功能描述:IC PWM D/A CONV 6BIT DUAL 8-MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,400 系列:- 設(shè)置時間:- 位數(shù):18 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:3 電壓電源:模擬和數(shù)字 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:36-TFBGA 供應(yīng)商設(shè)備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數(shù)目和類型:* 采樣率（每秒）:*
LTC1426CMS8#TR 功能描述:IC DAC PWM 6BIT DUAL MCPWR 8MSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散（最大）:2.7mW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-DFN-EP（4x3） 包裝:管件 輸出數(shù)目和類型:8 電壓，單極 采樣率（每秒）:*
LTC1426CMS8#TRPBF 功能描述:IC PWM D/A CONV 6BIT DUAL 8-MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,400 系列:- 設(shè)置時間:- 位數(shù):18 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:3 電壓電源:模擬和數(shù)字 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:36-TFBGA 供應(yīng)商設(shè)備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數(shù)目和類型:* 采樣率（每秒）:*
LTC1426CS8 功能描述:IC PWM D/A CONV 6BIT DUAL 8-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散（最大）:2.7mW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-DFN-EP（4x3） 包裝:管件 輸出數(shù)目和類型:8 電壓，單極 采樣率（每秒）:*
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*