参数资料
| 型号： | LTC1742CFW#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT 65MSPS 48-TSSOP |
| 标准包装： | 1,800 |
| 位数： | 14 |
| 采样率（每秒）： | 65M |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 1.38W |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-TFSOP（0.240"，6.10mm 宽） |
| 供应商设备封装： | 48-TSSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个单端，双极；1 个差分，双极 |
11
LTC1742
1742f
APPLICATIO S I FOR ATIO
WU
UU
Spurious Free Dynamic Range (SFDR)
Spurious free dynamic range is the peak harmonic or
spurious noise that is the largest spectral component
excluding the input signal and DC. This value is expressed
in decibels relative to the RMS value of a full scale input
signal.
Input Bandwidth
The input bandwidth is that input frequency at which the
amplitude of the reconstructed fundamental is reduced by
3dB for a full scale input signal.
Aperture Delay Time
The time from when a rising ENC equals the ENC voltage
to the instant that the input signal is held by the sample and
hold circuit.
Aperture Delay Jitter
The variation in the aperture delay time from conversion to
conversion. This random variation will result in noise
when sampling an AC input. The signal to noise ratio due
to the jitter alone will be:
SNRJITTER = –20log (2π) FIN TJITTER
CONVERTER OPERATION
The LTC1742 is a CMOS pipelined multistep converter.
The converter has four pipelined ADC stages; a sampled
analog input will result in a digitized value five cycles later,
see the Timing Diagram section. The analog input is
differential for improved common mode noise immunity
and to maximize the input range. Additionally, the differen-
tial input drive will reduce even order harmonics of the
sample-and-hold circuit. The encode input is also
differential for improved common mode noise immunity.
The LTC1742 has two phases of operation, determined by
the state of the differential ENC/ENC input pins. For brev-
ity, the text will refer to ENC greater than ENC as ENC high
and ENC less than ENC as ENC low.
Each pipelined stage shown in Figure 1 contains an ADC,
a reconstruction DAC and an interstage residue amplifier.
DIFF
REF
AMP
REF
BUF
4.7
F
1
F
0.1
F
0.1
F
1
F
INTERNAL CLOCK SIGNALS
REFL
REFH
DIFFERENTIAL
INPUT
LOW JITTER
CLOCK
DRIVER
RANGE
SELECT
2.35V
REFERENCE
FIRST PIPELINED
ADC STAGE
(5 BITS)
FOURTH PIPELINED
ADC STAGE
(4 BITS)
SECOND PIPELINED
ADC STAGE
(4 BITS)
ENC
REFHA
REFLB
REFLA REFHB
ENC
SHIFT REGISTER
AND CORRECTION
OE
MSBINV
OGND
OF
OVDD 0.5V TO
5V
D13
D0
CLKOUT
1742 F01
INPUT
S/H
SENSE
VCM
AIN
–
AIN
+
4.7
F
THIRD PIPELINED
ADC STAGE
(4 BITS)
OUTPUT
DRIVERS
CONTROL LOGIC
AND
CALIBRATION LOGIC
Figure 1. Functional Block Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| LTC1743IFW#PBF | IC ADC 12BIT 50MSPS SMPL 48TSSOP |
| LTC1744IFW#TRPBF | IC ADC 14BIT 50MSPS 48-TSSOP |
| LTC1745CFW#TRPBF | IC ADC 12BIT 25MSPS LN 48TSSOP |
| LTC1746IFW#TRPBF | IC ADC 14BIT 25MSPS LP 48TSSOP |
| LTC1747IFW#PBF | IC ADC 12BIT 80MSPS 48-TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1742IFW | 功能描述:IC ADC SMPL 14BIT 65MSPS 48TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| LTC1742IFW#PBF | 功能描述:IC ADC 14BIT 65MSPS 48-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 其它有关文件:TSA1204 View All Specifications 标准包装:1 系列:- 位数:12 采样率（每秒）:20M 数据接口:并联 转换器数目:2 功率耗散（最大）:155mW 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-TQFP 供应商设备封装:48-TQFP（7x7） 包装:Digi-Reel® 输入数目和类型:4 个单端，单极；2 个差分，单极 产品目录页面:1156 (CN2011-ZH PDF) 其它名称:497-5435-6 |
| LTC1742IFW#TR | 功能描述:IC ADC SMPL 14BIT 65MSPS 48TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| LTC1742IFW#TRPBF | 功能描述:IC ADC 14BIT 65MSPS 48-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| LTC1743CFW | 功能描述:IC ADC 12BIT 50MSPS SMPL 48TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
发布紧急采购，3分钟左右您将得到回复。