參數(shù)資料
型號: LTC1740IG#TRPBF
廠商: Linear Technology
文件頁數(shù): 5/16頁
文件大小: 0K
描述: IC ADC 14BIT 6MSPS 36SSOP
標準包裝: 2,000
位數(shù): 14
采樣率(每秒): 6M
數(shù)據(jù)接口: 并聯(lián)
轉換器數(shù)目: 1
功率耗散(最大): 300mW
電壓電源: 雙 ±
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 36-SSOP(0.209",5.30mm 寬)
供應商設備封裝: 36-SSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 2 個單端,雙極;1 個差分,雙極
13
LTC1740
1740f
Full-Scale and Offset Adjustment
In applications where absolute accuracy is important,
offset and full-scale errors can be adjusted to zero. Offset
error should be adjusted before full-scale error. Figure 11
shows a method for error adjustment for a dual supply,
5.00V input range application. For zero offset error apply
– 0.15mV (i. e., – 0.5LSB) at + AIN and adjust R1 until the
output code flickers between 00 0000 0000 0000 and 11
1111 1111 1111. For full-scale adjustment, apply an input
voltage of 2.49954V (FS – 1.5LSBs) at + AIN and adjust R2
until the output code flickers between 01 1111 1111 1110
and 01 1111 1111 1111.
Digital Output Drivers
The LTC1740 output drivers can interface to logic operat-
ing from 3V to 5V by setting OVDD to the logic power
supply. OVDD requires a 1F decoupling capacitor. To
prevent digital noise from affecting performance, the load
capacitance on the digital outputs should be minimized. If
large capacitive loads are required, (>30pF) external buff-
ers or 100
resistors in series with the digital outputs are
suggested.
Timing
The conversion start is controlled by the rising edge of the
CLK pin. Once a conversion is started it cannot be stopped
or restarted until the conversion cycle is complete. Output
data is updated at the end of conversion, or about 100ns
after a conversion is begun. There is an additional two
cycle pipeline delay, so the data for a given conversion is
output two full clock cycles plus 100ns after the convert
start. Thus output data can be latched on the third CLK
rising edge after the rising edge that samples the input.
Clock Input
The LTC1740 only uses the rising edge of the CLK pin for
internal timing, and CLK doesn’t necessarily need to have
a 50% duty cycle. For optimal AC performance the rise
time of the CLK should be less than 5ns. If the available
clock has a rise time slower than 5ns, it can be locally sped
up with a logic gate. The clock can be driven with 5V
CMOS, 3V CMOS or TTL logic levels.
APPLICATIO S I FOR ATIO
WU
UU
R2
1k
10k
1
F
1740 F11
+AIN
VSS
VIN
5V
–5V
LTC1740
5V
–AIN
SENSE
VREF
10k
24k
100
R1
50k
Figure 11. Offset and Full-Scale Adjust Circuit
相關PDF資料
PDF描述
LTC1741IFW#PBF IC ADC 12BIT 65MSPS 48-TSSOP
LTC1742CFW#TRPBF IC ADC 14BIT 65MSPS 48-TSSOP
LTC1743IFW#PBF IC ADC 12BIT 50MSPS SMPL 48TSSOP
LTC1744IFW#TRPBF IC ADC 14BIT 50MSPS 48-TSSOP
LTC1745CFW#TRPBF IC ADC 12BIT 25MSPS LN 48TSSOP
相關代理商/技術參數(shù)
參數(shù)描述
LTC1741CFW 功能描述:IC ADC 12BIT 65MSPS 48-TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數(shù):12 采樣率(每秒):20M 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:2 功率耗散(最大):155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端,單極;2 個差分,單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
LTC1741CFW#PBF 功能描述:IC ADC 12BIT 65MSPS 48-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):12 采樣率(每秒):3M 數(shù)據(jù)接口:- 轉換器數(shù)目:- 功率耗散(最大):- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:-
LTC1741CFW#TR 功能描述:IC ADC SMPL 12BIT 65MSPS 48TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):12 采樣率(每秒):300k 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:1 功率耗散(最大):75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC(0.295",7.50mm 寬) 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端,單極;1 個單端,雙極
LTC1741CFW#TRPBF 功能描述:IC ADC 12BIT 65MSPS 48-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):12 采樣率(每秒):3M 數(shù)據(jù)接口:- 轉換器數(shù)目:- 功率耗散(最大):- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:-
LTC1741IFW 功能描述:IC ADC SMPL 12BIT 65MSPS 48TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):12 采樣率(每秒):300k 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:1 功率耗散(最大):75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC(0.295",7.50mm 寬) 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端,單極;1 個單端,雙極