Linear Technology DC1082A-E - LTC2356-14, 14-bit 1-ch 3.5Msps SAR ADC (Bipolar, req DC890) DC1082A-E DC1082A-E Data Sheet
Product codes
DC1082A-E
LTC2356-12/LTC2356-14
3
2356fb
DYNAMIC ACCURACY
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C with external reference = 2.55V. V
DD
= 3.3V. Single-ended A
IN
+
signal drive with A
IN
–
= 1.5V
DC. Differential signal drive with V
CM
= 1.5V at A
IN
+
and A
IN
–
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
= 3.3V.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN
Analog Differential Input Range (Notes 3, 8, 9) 3.1V ≤ V
DD
≤ 3.6V
l
–1.25 to 1.25
V
V
CM
Analog Common Mode + Differential
Input Range (Note 10)
0 to V
DD
V
I
IN
Analog Input Leakage Current
l
1
µA
C
IN
Analog Input Capacitance
(Note 19)
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
CMRR
Analog Input Common Mode Rejection Ratio
f
IN
= 1MHz, V
IN
= 0V to 3V
f
IN
= 100MHz, V
IN
= 0V to 3V
–60
–15
dB
dB
SYMBOL PARAMETER
CONDITIONS
LTC2356-12
LTC2356-14
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
SINAD
Signal-to-Noise Plus
Distortion Ratio
100kHz Input Signal (Note 19)
1.4MHz Input Signal (Note 19)
l
68
71.1
71.1
70
74.1
72.3
dB
dB
THD
Total Harmonic
Distortion
100kHz First 5 Harmonics (Note 19)
1.4MHz First 5 Harmonics (Note 19)
l
–86
–82
–76
–86
–82
–78
dB
dB
SFDR
Spurious Free
Dynamic Range
100kHz Input Signal (Note 19)
1.4MHz Input Signal (Note 19)
86
82
86
82
dB
dB
IMD
Intermodulation
Distortion
0.625V
P-P
to 1.4MHz Summed with 0.625V
P-P
1.56MHz into A
IN
+
and Inverted into A
IN
–
–82
–82
dB
Code-to-Code
Transition Noise
V
REF
= 2.5V (Note 18)
0.25
1
LSB
RMS
Full Power Bandwidth V
IN
= 2.5V
P-P
, SDO = 11585LSB
P-P
(Note 15)
50
50
MHz
Full Linear Bandwidth S/(N + D) ≥ 68dB
5
5
MHz
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
= 3.1V 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
C
REF
= 10µF
2
ms
External V
REF
Input Range
2.55
V
DD
V
INTERNAL REFERENCE CHARACTERISTICS
The
l
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. V
DD
= 3.3V.