LTC2377-16_15 Datasheet, PDF (4/24 Pages) Linear Technology – 16-Bit, 500ksps, Low Power SAR ADC with 97dB SNR

LTC2377-16
Reference Input 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
CONDITIONS
MIN
TYP
MAX UNITS
V_REF
I_REF
V_IHDGC
V_ILDGC
Reference Voltage
Reference Input Current
High Level Input Voltage REF/DGC Pin
Low Level Input Voltage REF/DGC Pin
(Note 5)
(Note 9)
l 2.5
5.1
V
l
0.32
0.4
mA
l 0.8V_REF
l
V
0.2V_REF
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. (Note 4)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V_IH
High Level Input Voltage
l 0.8 • OV_DD
V
V_IL
Low Level Input Voltage
l
0.2 • OV_DD
V
I_IN
Digital Input Current
V_IN = 0V to OV_DD
l –10
10
µA
C_IN
Digital Input Capacitance
5
pF
V_OH
High Level Output Voltage
I_O = –500µA
l OV_DD – 0.2
V
V_OL
Low Level Output Voltage
I_O = 500µA
l
0.2
V
I_OZ
Hi-Z Output Leakage Current
V_OUT = 0V to OV_DD
l –10
10
µA
I_SOURCE Output Source Current
V_OUT = 0V
–10
mA
I_SINK
Output Sink Current
V_OUT = OV_DD
10
mA
Power Requirements 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
CONDITIONS
MIN
TYP
MAX UNITS
V_DD
OV_DD
I_VDD
I_OVDD
I_PD
I_PD
Supply Voltage
Supply Voltage
Supply Current
Supply Current
Power Down Mode
Power Down Mode
l 2.375
2.5
2.625
V
l 1.71
5.25
V
500ksps Sample Rate
l
500ksps Sample Rate (C_L = 20pF)
Conversion Done (I_VDD + I_OVDD + I_REF)
l
Conversion Done (I_VDD + I_OVDD + I_REF, H-Grade) l
2.7
3.2
mA
0.1
mA
0.9
90
µA
0.9
140
µA
P_D
Power Dissipation
Power Down Mode
Power Down Mode
500ksps Sample Rate
Conversion Done (I_VDD + I_OVDD + I_REF)
Conversion Done (I_VDD + I_OVDD + I_REF, H-Grade)
6.75
8
mW
2.25
225
µW
2.25
315
µW
ADC Timing Characteristics 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
CONDITIONS
MIN
TYP
MAX UNITS
f_SMPL
t_CONV
t_ACQ
t_HOLD
t_CYC
t_CNVH
t_BUSYLH
t_CNVL
t_QUIET
Maximum Sampling Frequency
Conversion Time
Acquisition Time
Maximum Time Between Acquisitions
Time Between Conversions
CNV High Time
CNV↑ to BUSY Delay
Minimum Low Time for CNV
SCK Quiet Time from CNV↑
t_ACQ = t_CYC – t_HOLD (Note 10)
C_L = 20pF
(Note 11)
(Note 10)
l
l
1
l 1.46
l
l
2
l 20
l
l 20
l 20
500
ksps
1.5
µs
µs
540
ns
µs
ns
13
ns
ns
ns
237716f
4