LTC2351-14_15 Datasheet, PDF (3/20 Pages) Linear Technology – 6-Channel, 14-Bit, 1.5Msps Simultaneous Sampling ADC with Shutdown

LTC2351-14
ANALOG INPUT The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T_A = 25°C. With internal reference, V_DD = V_CC = 3V.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
V_IN
Analog Differential Input Range (Notes 3, 8, 9) 2.7V ≤ V_DD ≤ 3.6V, Unipolar
2.7V ≤ V_DD ≤ 3.6V, Bipolar
V_CM
Analog Common Mode + Differential
Input Range
(Note 8)
0 to 2.5
±1.25
0 to V_DD
I_IN
Analog Input Leakage Current
l
1
C_IN
Analog Input Capacitance
t_ACQ
Sample-and-Hold Acquisition Time
t_AP
Sample-and-Hold Aperture Delay Time
(Note 6)
13
l
39
1
t_JITTER Sample-and-Hold Aperture Delay Time Jitter
0.3
t_SK
Channel to Channel Aperture Skew
200
CMRR Analog Input Common Mode Rejection Ratio
f_IN = 100kHz, V_IN = 0V to 3V
–83
f_IN = 10MHz, V_IN = 0V to 3V
–67
UNITS
V
V
V
μA
pF
ns
ns
ps
ps
dB
dB
DYNAMIC ACCURACY The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T_A = 25°C. With internal reference, V_DD = V_CC = 3V.
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 71
75
dB
75
dB
l 70
75
dB
THD
Total Harmonic
100kHz First 5 Harmonics
Distortion
300kHz First 5 Harmonics
100kHz First 5 Harmonics (LTC2351H-14)
l –80
–90
dB
–86
dB
l –79
–89
dB
SFDR
IMD
Spurious Free
Dynamic Range
Intermodulation
Distortion
100kHz Input Signal
300kHz Input Signal
0.625V_P-P, 833kHz into CH0⁺, 0.625V_P-P, 841kHz into CH0^–
Bipolar Mode. Also Applicable to Other Channels
90
dB
86
dB
–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
INTERNAL REFERENCE CHARACTERISTICS T_A = 25°C. 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
DIGITAL INPUTS AND DIGITAL OUTPUTS The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications 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
235114fb
3