Datasheet

LTC2351-14
3
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SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Differential Input Range (Notes 3, 8, 9) 2.7V ≤ V
DD
≤ 3.6V, Unipolar
2.7V ≤ V
DD
≤ 3.6V, Bipolar
0 to 2.5
±1.25
V
V
V
CM
Analog Common Mode + Differential
Input Range (Note 8)
0 to V
DD
V
I
IN
Analog Input Leakage Current
l
1μA
C
IN
Analog Input Capacitance 13 pF
t
ACQ
Sample-and-Hold Acquisition Time (Note 6)
l
39 ns
t
AP
Sample-and-Hold Aperture Delay Time 1 ns
t
JITTER
Sample-and-Hold Aperture Delay Time Jitter 0.3 ps
t
SK
Channel to Channel Aperture Skew 200 ps
CMRR Analog Input Common Mode Rejection Ratio f
IN
= 100kHz, V
IN
= 0V to 3V
f
IN
= 10MHz, V
IN
= 0V to 3V
–83
–67
dB
dB
ANALOG INPUT
The l denotes the specifi cations which apply over the full operating temperature range,
otherwise specifi cations are at T
A
= 25°C. With internal reference, V
DD
= V
CC
= 3V.
DYNAMIC ACCURACY
The l denotes the specifi cations which apply over the full operating temperature range,
otherwise specifi cations are at T
A
= 25°C. With internal reference, V
DD
= V
CC
= 3V.
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 2.5 V
V
REF
Output Tempco 15 ppm/°C
V
REF
Line Regulation V
DD
= 2.7V to 3.6V, V
REF
= 2.5V 600 μV/V
V
REF
Output Resistance Load Current = 0.5mA 0.2 Ω
V
REF
Settling Time Ext C
REF
= 10μF 2 ms
External V
REF
Input Range 2.55 V
DD
V
INTERNAL REFERENCE CHARACTERISTICS
T
A
= 25°C. V
DD
= V
CC
= 3V.
DIGITAL INPUTS AND DIGITAL OUTPUTS
The l denotes the specifi cations which apply over the
full operating temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD
= V
CC
= 3V.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
DD
= 3.3V
l
2.4 V
V
IL
Low Level Input Voltage V
DD
= 2.7V
l
0.6 V
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-Noise Plus
Distortion Ratio
100kHz Input Signal
300kHz Input Signal
100kHz Input Signal (LTC2351H-14)
l
l
71
70
75
75
75
dB
dB
dB
THD Total Harmonic
Distortion
100kHz First 5 Harmonics
300kHz First 5 Harmonics
100kHz First 5 Harmonics (LTC2351H-14)
l
l
–80
–79
–90
–86
–89
dB
dB
dB
SFDR Spurious Free
Dynamic Range
100kHz Input Signal
300kHz Input Signal
90
86
dB
dB
IMD Intermodulation
Distortion
0.625V
P-P
, 833kHz into CH0
+
, 0.625V
P-P
, 841kHz into CH0
–
Bipolar Mode. Also Applicable to Other Channels
–80 dB
Code-to-Code
Transition Noise
V
REF
= 2.5V (Note 17) 0.7 LSB
RMS
Full Power Bandwidth V
IN
= 2.5V
P-P
, SDO = 11585LSB
P-P
(–3dBFS) (Note 15) 50 MHz
Full Linear Bandwidth S/(N + D) ≥ 68dB, Bipolar Differential Input 5 MHz