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参数资料
| 型号： | LTC2175IUKG-14#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 14/34页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT 125MSPS QUAD 52QFN |
| 标准包装： | 2,000 |
| 位数： | 14 |
| 采样率（每秒）： | 125M |
| 数据接口： | Serial LVDS |
| 转换器数目： | 4 |
| 功率耗散（最大）： | 646mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 52-WFQFN 裸露焊盘 |
| 供应商设备封装： | 52-QFN（7x8） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 Differential; 2 Single-Ended |
| 配用： | DC1371A-ND - BOARD USB DATA ACQUISITION HS |
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21
21754314fa
LTC2175-14/
LTC2174-14/LTC2173-14
applicaTions inForMaTion
Figure 8. Reference Circuit
Figure 9. Using an External 1.25V Reference
ground. For a 2V input range with an external reference,
apply a 1.25V reference voltage to SENSE (Figure 9).
The input range can be adjusted by applying a voltage to
SENSE that is between 0.625V and 1.30V. The input range
will then be 1.6 VSENSE.
The reference is shared by all four ADC channels, so it is
not possible to independently adjust the input range of
individual channels.
The VREF, REFH and REFL pins should be bypassed as
shown in Figure 8. The 0.1F capacitor between REFH
Figure 10. Equivalent Encode Input Circuit for
Differential Encode Mode
and REFL should be as close to the pins as possible (not
on the backside of the circuit board).
Encode Input
The signal quality of the encode inputs strongly affects
the A/D noise performance. The encode inputs should
be treated as analog signals—do not route them next to
digital traces on the circuit board. There are two modes
of operation for the encode inputs: the differential encode
mode (Figure 10), and the single-ended encode mode
(Figure 11).
VREF
REFH
SENSE
TIE TO VDD FOR 2V RANGE;
TIE TO GND FOR 1V RANGE;
RANGE = 1.6 VSENSE FOR
0.65V < VSENSE < 1.300V
1.25V
REFL
0.1F
2.2F
INTERNAL ADC
HIGH REFERENCE
BUFFER
217514 F08
LTC2175-14
5
0.8x
DIFF AMP
INTERNAL ADC
LOW REFERENCE
1.25V BANDGAP
REFERENCE
0.625V
RANGE
DETECT
AND
CONTROL
1F
0.1F
SENSE
1.25V
EXTERNAL
REFERENCE
1F
VREF
217514 F09
LTC2175-14
VDD
LTC2175-14
217514 F10
ENC–
ENC+
15k
VDD
DIFFERENTIAL
COMPARATOR
30k
ENC+
ENC–
217514 F11
0V
1.8V TO 3.3V
LTC2175-14
CMOS LOGIC
BUFFER
Figure 11. Equivalent Encode Input Circuit for
Single-Ended Encode Mode
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2180 | 制造商:LINER 制造商全称:Linear Technology 功能描述:12-Bit, 65Msps/ 40Msps/25Msps Low Power Dual ADCs |
| LTC2180CUP#PBF | 制造商:Linear Technology 功能描述:ADC Dual 25Msps 16-bit Parallel/Serial (SPI)/LVDS 64-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 16BIT DUAL PAR/SRL 64QFN 制造商:Linear Technology 功能描述:ADC 2CH 16BIT 25MSPS QFN-6 制造商:Linear Technology 功能描述:ADC, 2CH, 16BIT, 25MSPS, QFN-64 制造商:Linear Technology 功能描述:ADC, 2CH, 16BIT, 25MSPS, QFN-64; Resolution (Bits):16bit; Sampling Rate:25MSPS; Supply Voltage Type:Single; Supply Voltage Min:1.7V; Supply Voltage Max:1.9V; Supply Current:43.5mA; Digital IC Case Style:QFN; No. of Pins:64 ;RoHS Compliant: Yes |
| LTC2180CUP#PBF-ES | 制造商:Linear Technology 功能描述:ADC Dual 25Msps 16-bit Parallel/Serial (SPI)/LVDS 64-Pin QFN EP |
| LTC2180CUP#TRPBF | 制造商:Linear Technology 功能描述:ADC Dual 25Msps 16-bit Parallel/Serial (SPI)/LVDS 64-Pin QFN EP T/R 制造商:Linear Technology 功能描述:IC ADC DUAL 16BIT 25MSPS 64-QFN |
| LTC2180CUP#TRPBF-ES | 制造商:Linear Technology 功能描述:ADC Dual 25Msps 16-bit Parallel/Serial (SPI)/LVDS 64-Pin QFN EP T/R |
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