LTC2309 Linear Technology Corporation, LTC2309 Datasheet - Page 5

• Manufacturer Part Number: LTC2309
• Description: 12-Bit SAR ADC
• Manufacturer: Linear Technology Corporation

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I
ADC TIMING CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL PARAMETER
f
t
t
t
t
t
t
t
t
t
t
temperature range, otherwise specifi cations are at T
SYMBOL PARAMETER
f
t
t
t
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 with AV
wired together (unless otherwise noted).
Note 3: When these pin voltages are taken below ground or above V
they will be clamped by internal diodes. These products can handle input
currents greater than 100mA below ground or above V
Note 4: AV
otherwise noted.
Note 5: Linearity, offset and full-scale specifi cations apply for a
single-ended analog input with respect to COM.
Note 6: Integral nonlinearity is defi ned 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.
SCL
HD(SDA)
LOW
HIGH
SU(STA)
HD(DAT)
SU(DAT)
r
f
SU(STO)
BUF
SMPL
CONV
ACQ
REFWAKE
2
C TIMING CHARACTERISTICS
DD
SCL Clock Frequency
Hold Time (Repeated) Start Condition
Low Period of the SCL Pin
High Period of the SCL Pin
Set-Up Time for a Repeated Start Condition
Data Hold Time
Data Set-Up Time
Rise Time for SDA/SCL Signals
Fall Time for SDA/SCL Signals
Set-Up Time for Stop Condition
Bus Free Time Between a Stop and Start Condition
Throughput Rate (Successive Reads)
Conversion Time
Acquisition Time
REFCOMP Wake-Up Time (Note 13)
= 5V, DV
DD
= 5V, f
SMPL
= 14ksps internal reference unless
DD
without latchup.
A
A
DD
= 25°C. (Note 4)
= 25°C. (Note 4)
CONDITIONS
(Note 9)
(Note 9)
C
REFCOMP
and DV
The
CONDITIONS
(Note 12)
(Note 12)
DD
The
,
DD
l
= 10μF , C
denotes the specifi cations which apply over the full operating
l
denotes the specifi cations which apply over the full operating
Note 7: Bipolar zero error is the offset voltage measured from –0.5LSB
when the output code fl ickers between 0000 0000 0000 and 1111 1111
1111. Unipolar zero error is the offset voltage measured from +0.5LSB
when the output code fl ickers between 0000 0000 0000 and 0000 0000
0001.
Note 8: Full-scale bipolar error is the worst-case of –FS or +FS untrimmed
deviation from ideal fi rst and last code transitions and includes the effect
of offset error. Unipolar full-scale error is the deviation of the last code
transition from ideal and includes the effect of offset error.
Note 9: Guaranteed by design, not subject to test.
Note 10: All specifi cations in dB are referred to a full-scale ±2.048V input
with a 2.5V reference voltage.
Note 11: Full linear bandwidth is defi ned as the full-scale input frequency
at which the SINAD degrades to 60dB or 10 bits of accuracy.
Note 12: C
Note 13: REFCOMP wake-up time is the time required for the REFCOMP
pin to settle within 0.5LSB at 12-bit resolution of its fi nal value after
waking up from SLEEP mode.
REF
= 2.2μF
B
= capacitance of one bus line in pF (10pF ≤ C
l
l
l
l
l
l
l
l
l
l
l
l
l
l
20 + 0.1C
20 + 0.1C
MIN
100
MIN
0.6
1.3
0.6
0.6
0.6
1.3
0
B
B
TYP
TYP
200
1.3
LTC2309
MAX
MAX
400
300
300
240
0.9
1.8
14
B
≤ 400pF).
UNITS
UNITS
5
ksps
2309f
kHz
ms
μs
μs
μs
μs
μs
ns
ns
ns
μs
μs
μs
ns