LTC2159 查看數據表（PDF） - Linear Technology
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LTC2159 Datasheet PDF : 32 Pages
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LTC2159
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
MIN
TYP
MAX
UNITS
SFDR
Spurious Free Dynamic Range
4th Harmonic or Higher
5MHz Input
30MHz Input
70MHz Input
140MHz Input
95
dBFS
l 89
95
dBFS
95
dBFS
95
dBFS
S/(N+D) Signal-to-Noise Plus Distortion Ratio
5MHz Input
30MHz Input
70MHz Input
140MHz Input
76.9
dBFS
l 74.9
76.8
dBFS
76.5
dBFS
76.4
dBFS
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
–600µA < 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
–400µA < IOUT < 1mA
7
Ω
VREF Line Regulation
1.7V < VDD < 1.9V
0.6
mV/V
Digital Inputs and Outputs The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 5)
SYMBOL PARAMETER
ENCODE INPUTS (ENC+, ENC–)
DIFFERENTIAL ENCODE MODE (ENC– NOT TIED TO GND)
CONDITIONS
MIN
TYP
MAX
UNITS
VID
Differential Input Voltage
VICM
Common Mode Input Voltage
VIN
Input Voltage Range
RIN
Input Resistance
CIN
Input Capacitance
SINGLE-ENDED ENCODE MODE (ENC– TIED TO GND)
(Note 8)
Internally Set
Externally Set (Note 8)
ENC+, ENC– to GND
(See Figure 10)
(Note 8)
l 0.2
V
1.2
V
l 1.1
1.6
V
l 0.2
3.6
V
10
kΩ
3.5
pF
VIH
High Level Input Voltage
VDD = 1.8V
l 1.2
V
VIL
Low Level Input Voltage
VIN
Input Voltage Range
VDD = 1.8V
ENC+ to GND
l
l
0
0.6
V
3.6
V
RIN
Input Resistance
(See Figure 11)
30
kΩ
CIN
Input Capacitance
(Note 8)
3.5
pF
DIGITAL INPUTS (CS, SDI, SCK in Serial or Parallel Programming Mode. SDO in Parallel Programming Mode)
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IIN
Input Current
CIN
Input Capacitance
VDD = 1.8V
VDD = 1.8V
VIN = 0V to 3.6V
(Note 8)
l 1.3
V
l
0.6
V
l –10
10
µA
3
pF
2159f
5
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