Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
2
232816fb
For more information
www.linear.com/LTC2328-16
LTC2328-16
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
V
IN+
V
IN–
V
IN+
– V
IN–
I
IN
C
IN
R
IN
CMRR
PARAMETER
Absolute Input Range (IN
+
)
Absolute Input Range (IN
–
)
Input Differential Voltage Range
Analog Input Current
Analog Input Capacitance
Analog Input Resistance
Input Common Mode Rejection Ratio
f
IN
= 500kHz
CONDITIONS
(Note 5)
(Note 5)
V
IN
= V
IN+
– V
IN–
l
l
l
l
elecTrical characTerisTics
MIN
–2.5
•
V
REFBUF
– 0.5
–0.5
–2.5
•
V
REFBUF
–7.8
TYP
MAX
2.5
•
V
REFBUF
+ 0.5
0.5
2.5
•
V
REFBUF
4.8
UNITS
V
V
V
mA
pF
kΩ
dB
5
2.083
66
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
PARAMETER
Resolution
No Missing Codes
Transition Noise
INL
DNL
BZE
FSE
Integral Linearity Error
Differential Linearity Error
Bipolar Zero-Scale Error
Bipolar Zero-Scale Error Drift
Bipolar Full-Scale Error
V
REFBUF
= 4.096V (REFBUF Overdriven)
(Notes 7, 9)
REFIN = 2.048V (Note 7)
Bipolar Full-Scale Error Drift
l
l
converTer characTerisTics
CONDITIONS
l
l
MIN
16
16
TYP
MAX
UNITS
Bits
Bits
0.5
(Note 6)
(Note 7)
l
l
l
LSB
RMS
1.5
1
10
–35
45
LSB
LSB
LSB
LSB/°C
LSB
LSB
ppm/°C
–1.5
–1
–10
–35
–45
±0.25
±0.1
0
0.01
±0.5
DynaMic accuracy
SYMBOL
SINAD
PARAMETER
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C and A
IN
= –1dBFS. (Notes 4, 8)
CONDITIONS
±6.25V Range, f
IN
= 2kHz, REFIN = 1.25V
±10.24V Range, f
IN
= 2kHz, REFIN = 2.048V
±12.5V Range, f
IN
= 2kHz, REFBUF = 5V
l
l
l
l
l
l
l
l
l
l
l
l
MIN
87.1
90.2
90.5
87.5
91
92
TYP
90.4
93.4
94.2
90.5
93.5
94.5
–108
–111
–106
MAX
UNITS
dB
dB
dB
dB
dB
dB
Signal-to-(Noise + Distortion) Ratio
SNR
Signal-to-Noise Ratio
±6.25V Range, f
IN
= 2kHz, REFIN = 1.25V
±10.24V Range, f
IN
= 2kHz, REFIN = 2.048V
±12.5V Range, f
IN
= 2kHz, REFBUF = 5V
THD
Total Harmonic Distortion
±6.25V Range, f
IN
= 2kHz, REFIN = 1.25V
±10.24V Range, f
IN
= 2kHz, REFIN = 2.048V
±12.5V Range, f
IN
= 2kHz, REFBUF = 5V
–98
–98
–96
dB
dB
dB
dB
dB
dB
MHz
ps
ps
RMS
µs
232816fb
SFDR
Spurious Free Dynamic Range
±6.25V Range, f
IN
= 2kHz, REFIN = 1.25V
±10.24V Range, f
IN
= 2kHz, REFIN = 2.048V
±12.5V Range, f
IN
= 2kHz, REFBUF = 5V
98
98
96
110
113
108
7
500
4
–3dB Input Linear Bandwidth
Aperture Delay
Aperture Jitter
Transient Response
Full-Scale Step
0.5
For more information
www.linear.com/LTC2328-16
3
LTC2328-16
The
l
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
V
REFIN
PARAMETER
Internal Reference Output Voltage
V
REFIN
Temperature Coefficient
REFIN Output Impedance
V
REFIN
Line Regulation
REFIN Input Voltage Range
V
DD
= 4.75V to 5.25V
(REFIN Overdriven) (Note 5)
1.25
(Note 14)
l
inTernal reFerence characTerisTics
CONDITIONS
MIN
2.043
TYP
2.048
2
15
0.08
MAX
2.053
20
UNITS
V
ppm/°C
kΩ
mV/V
2.4
V
reFerence buFFer characTerisTics
SYMBOL
V
REFBUF
PARAMETER
Reference Buffer Output Voltage
REFBUF Input Voltage Range
REFBUF Output Impedance
I
REFBUF
REFBUF Load Current
CONDITIONS
V
REFIN
= 2.048V
(REFBUF Overdriven) (Notes 5, 9)
V
REFIN
= 0V
The
l
denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
MIN
l
l
TYP
4.096
13
MAX
4.101
5
UNITS
V
V
kΩ
mA
mA
4.091
2.5
V
REFBUF
= 5V (REFBUF Overdriven) (Notes 9, 10)
V
REFBUF
= 5V, Nap Mode (REFBUF Overdriven) (Note 9)
l
0.89
0.39
1.2
DigiTal inpuTs anD DigiTal ouTpuTs
SYMBOL
V
IH
V
IL
I
IN
C
IN
V
OH
V
OL
I
OZ
I
SOURCE
I
SINK
PARAMETER
High Level Input Voltage
Low Level Input Voltage
Digital Input Current
Digital Input Capacitance
High Level Output Voltage
Low Level Output Voltage
Hi-Z Output Leakage Current
Output Source Current
Output Sink Current
I
O
= –500µA
I
O
= 500µA
V
OUT
= 0V to OV
DD
V
OUT
= 0V
V
OUT
= OV
DD
V
IN
= 0V to OV
DD
CONDITIONS
The
l
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
MIN
l
l
l
TYP
MAX
0.2
•
OV
DD
UNITS
V
V
μA
pF
V
0.8
•
OV
DD
–10
5
OV
DD
– 0.2
0.2
–10
–10
10
10
10
l
l
l
V
µA
mA
mA
The
l
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
V
DD
OV
DD
I
VDD
I
OVDD
I
NAP
I
SLEEP
P
D
PARAMETER
Supply Voltage
Supply Voltage
Supply Current
Supply Current
Nap Mode Current
Sleep Mode Current
Power Dissipation
Nap Mode
Sleep Mode
1Msps Sample Rate (IN
+
= –10.24V, IN
–
= 0V)
1Msps Sample Rate (IN
+
= IN
–
= 0V)
1Msps Sample Rate (C
L
= 20pF)
Conversion Done (I
VDD
+ I
OVDD
, IN
+
= –10.24V, IN
–
= 0V)
Sleep Mode (I
VDD
+ I
OVDD
)
1Msps Sample Rate (IN
+
= –10.24V, IN
–
= 0V)
1Msps Sample Rate (IN
+
= IN
–
= 0V)
Conversion Done (I
VDD
+ I
OVDD
, IN
+
= –10.24V, IN
–
= 0V)
Sleep Mode (I
VDD
+ I
OVDD
)
CONDITIONS
l
l
l
power requireMenTs
MIN
4.75
1.71
TYP
5
14.5
10
0.4
8.4
60
72.5
50
42
0.3
MAX
5.25
5.25
16
10
225
80
50
1.1
UNITS
V
V
mA
mA
mA
mA
μA
mW
mW
mW
mW
l
l
l
l
l
4
232816fb
For more information
www.linear.com/LTC2328-16
LTC2328-16
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
f
SMPL
t
CONV
t
ACQ
t
CYC
t
CNVH
t
BUSYLH
t
CNVL
t
QUIET
t
SCK
t
SCKH
t
SCKL
t
SSDISCK
t
HSDISCK
t
SCKCH
t
DSDO
t
HSDO
t
DSDOBUSYL
t
EN
t
DIS
t
WAKE
PARAMETER
Maximum Sampling Frequency
Conversion Time
Acquisition Time
Time Between Conversions
CNV High Time
CNV↑ to BUSY Delay
Minimum Low Time for CNV
SCK Quiet Time from CNV↑
SCK Period
SCK High Time
SCK Low Time
SDI Setup Time From SCK↑
SDI Hold Time From SCK↑
SCK Period in Chain Mode
SDO Data Valid Delay from SCK↑
SDO Data Remains Valid Delay from SCK↑
SDO Data Valid Delay from BUSY↓
Bus Enable Time After RDL↓
Bus Relinquish Time After RDL↑
REFBUF Wake-Up Time
CONDITIONS
l
l
aDc TiMing characTerisTics
MIN
460
460
1
20
20
20
10
4
4
4
1
13.5
TYP
MAX
1
527
t
ACQ
= t
CYC
– t
CONV
– t
BUSYLH
(Note 11)
l
l
l
C
L
= 20pF
(Note 12)
(Note 11)
(Notes 12, 13)
l
l
l
l
l
l
13
(Note 12)
(Note 12)
t
SCKCH
= t
SSDISCK
+ t
DSDO
(Note 12)
C
L
= 20pF, OV
DD
= 5.25V
C
L
= 20pF, OV
DD
= 2.5V
C
L
= 20pF, OV
DD
= 1.71V
C
L
= 20pF (Note 11)
C
L
= 20pF (Note 11)
(Note 12)
(Note 12)
C
REFBUF
= 47μF, C
REFIN
= 100nF
l
l
l
l
l
l
l
l
l
l
7.5
8
9.5
1
5
16
13
200
UNITS
Msps
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
All voltage values are with respect to ground.
Note 3:
When these pin voltages are taken below ground or above V
DD
or
OV
DD
, they will be clamped by internal diodes. This product can handle
input currents up to 100mA below ground or above V
DD
or OV
DD
without
latch-up.
Note 4:
V
DD
= 5V, OV
DD
= 2.5V, ±10.24V Range, REFIN = 2.048V,
f
SMPL
= 1MHz.
Note 5:
Recommended operating conditions.
Note 6:
Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
The deviation is measured from the center of the quantization band.
Note 7:
Bipolar zero error is the offset voltage measured from –0.5LSB
when the output code flickers between 0000 0000 0000 0000 and 1111
1111 1111 1111. Full-scale bipolar error is the worst-case of –FS or +FS
untrimmed deviation from ideal first and last code transitions and includes
the effect of offset error.
Note 8:
All specifications in dB are referred to a full-scale ±10.24V input
with REFIN = 2.048V.
Note 9:
When REFBUF is overdriven, the internal reference buffer must be
turned off by setting REFIN = 0V.
Note 10:
f
SMPL
= 1MHz, I
REFBUF
varies proportionally with sample rate.
Note 11:
Guaranteed by design, not subject to test.
Note 12:
Parameter tested and guaranteed at OV
DD
= 1.71V, OV
DD
= 2.5V
and OV
DD
= 5.25V.
Note 13:
t
SCK
of 10ns maximum allows a shift clock frequency up to
100MHz for rising edge capture.
Note 14:
Temperature coefficient is calculated by dividing the maximum
change in output voltage by the specified temperature range.
t
WIDTH
0.8 • OV
DD
0.2 • OV
DD
t
DELAY
0.8 • OV
DD
0.2 • OV
DD
t
DELAY
0.8 • OV
DD
0.2 • OV
DD
50%
50%
232816 F01
Figure 1. Voltage Levels for Timing Specifications
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