参数资料
型号: LTC2256CUJ-14#PBF
厂商: Linear Technology
文件页数: 29/34页
文件大小: 0K
描述: IC ADC 14BIT 25MSPS 1.8V 40-QFN
产品培训模块: LTC2262 - Ultra Low Power High Speed ADCs
标准包装: 61
位数: 14
采样率(每秒): 25M
数据接口: 并联,串行,SPI
转换器数目: 1
功率耗散(最大): 40mW
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: 40-WFQFN 裸露焊盘
供应商设备封装: 40-QFN(6x6)
包装: 管件
输入数目和类型: 1 个差分
配用: DC718C-ND - DEMO QUIKEVAL-II DATA
LTC2258-14
LTC2257-14/LTC2256-14
4
225814fc
For more information www.linear.com/LTC2258-14
analog inpuT The
l
denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at TA = 25°C. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Analog Input Range (AIN+ – AIN–)
1.7V < VDD < 1.9V
l
1 to 2
VP-P
VIN(CM)
Analog Input Common Mode (AIN+ + AIN–)/2 Differential Analog Input (Note 8) l VCM – 100mV
VCM
VCM + 100mV
V
VSENSE
External Voltage Reference Applied to SENSE External Reference Mode
l
0.625
1.250
1.300
V
IINCM
Analog Input Common Mode Current
Per Pin, 65Msps
Per Pin, 40Msps
Per Pin, 25Msps
81
50
31
A
IIN1
Analog Input Leakage Current
0 < AIN+, AIN– < VDD, No Encode
l
–1
1
A
IIN2
PAR/SER Input Leakage Current
0 < PAR/SER < VDD
l
–3
3
A
IIN3
SENSE Input Leakage Current
0.625 < SENSE < 1.3V
l
–6
6
A
tAP
Sample-and-Hold Acquisition Delay Time
0
ns
tJITTER
Sample-and-Hold Acquisition Delay Jitter
0.17
psRMS
CMRR
Analog Input Common Mode Rejection Ratio
80
dB
BW-3B
Full-Power Bandwidth
Figure 6 Test Circuit
800
MHz
DynaMic accuracy The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 5)
SYMBOL PARAMETER
CONDITIONS
LTC2258-14
LTC2257-14
LTC2256-14
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
SNR
Signal-to-Noise Ratio
5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
72.4
74
73.8
73.7
73
71.9
73.4
73.2
73.1
72.6
71.2
72.9
72.8
72.1
71.8
dB
SFDR
Spurious Free Dynamic Range
2nd or 3rd Harmonic
5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
78
90
84
80
90
84
80
90
84
dB
Spurious Free Dynamic Range
4th Harmonic or Higher
5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
85
90
85
90
85
90
84
dB
S/(N+D)
Signal-to-Noise Plus
Distortion Ratio
5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
71.5
73.8
73.7
73.6
72.5
71.5
73.2
73.1
73
72.3
70.7
72.8
72.7
72
71.2
dB
inTernal reFerence characTerisTics The
l
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCM Output Voltage
IOUT = 0
0.5 VDD – 25mV
0.5 VDD
0.5 VDD + 25mV
V
VCM Output Temperature Drift
±25
ppm/°C
VCM Output Resistance
–600A < IOUT < 1mA
4
Ω
VREF Output Voltage
IOUT = 0
1.225
1.250
1.275
V
VREF Output Temperature Drift
±25
ppm/°C
VREF Output Resistance
–400A < IOUT < 1mA
7
Ω
VREF Line Regulation
1.7V < VDD < 1.9V
0.6
mV/V
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