LTC2351-12
3
235112fa
DYNAMIC ACCURACY The l denotes the specications which apply over the full operating temperature range,
otherwise specications are at TA = 25°C. With internal reference, VDD = VCC = 3V.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VREF Output Voltage
IOUT = 0
2.5
V
VREF Output Tempco
15
ppm/°C
VREF Line Regulation
VDD = 2.7V to 3.6V, VREF = 2.5V
600
μV/V
VREF Output Resistance
Load Current = 0.5mA
0.2
Ω
VREF Settling Time
Ext CREF = 10μF
2
ms
External VREF Input Range
2.55
VDD
V
INTERNAL REFERENCE CHARACTERISTICS T
A = 25°C. VDD = VCC = 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-12)
l
69
68
72
71
72
dB
THD
Total Harmonic Distortion
100kHz First 5 Harmonics
300kHz First 5 Harmonics
100kHz First 5 Harmonics (LTC2351H-12)
l
–80
–79
–90
–85
–89
dB
SFDR
Spurious Free Dynamic Range
100kHz Input Signal
300kHz Input Signal
90
85
dB
IMD
Intermodulation Distortion
0.625VP-P, 833kHz into CH0+, 0.625VP-P, 841kHz into CH0–
Bipolar Mode. Also Applicable to Other Channels
–80
dB
Code-to-Code Transition Noise
VREF = 2.5V (Note 17)
0.2
LSBRMS
Full Power Bandwidth
VIN = 2.5VP-P, SDO = 11585LSBP-P (–3dBFS) (Note 15)
50
MHz
Full Linear Bandwidth
S/(N + D) ≥ 68dB, Bipolar Differential Input
5
MHz
ANALOG INPUT The l denotes the specications which apply over the full operating temperature range,
otherwise specications are at TA = 25°C. With internal reference, VDD = VCC = 3V.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Analog Differential Input Range (Notes 3, 8, 9)
2.7V ≤ VDD ≤ 3.6V, Unipolar
2.7V ≤ VDD ≤ 3.6V, Bipolar
0 to 2.5
±1.25
V
VCM
Analog Common Mode + Differential Input Range
(Note 8)
0 to VDD
V
IIN
Analog Input Leakage Current
l
1μA
CIN
Analog Input Capacitance
13
pF
tACQ
Sample-and-Hold Acquisition Time
(Note 6)
l
39
ns
tAP
Sample-and-Hold Aperture Delay Time
1
ns
tJITTER
Sample-and-Hold Aperture Delay Time Jitter
0.3
ps
tSK
Channel to Channel Aperture Skew
200
ps
CMRR
Analog Input Common Mode Rejection Ratio
fIN = 100kHz, VIN = 0V to 3V
fIN = 10MHz, VIN = 0V to 3V
–83
–67
dB