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Linear Technology LTC2378-16 with LTC6655-5/LT6350: 16-Bit, 1Msps, SAR ADC with 97dB SNR. Req DC718 or DC590 DC1783A-B DC1783A-B Data Sheet

Product codes
DC1783A-B
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LTC2378-16
4
237816f
aDc TiMing characTerisTics
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
f
SMPL
Maximum Sampling Frequency
l
1
Msps
t
CONV
Conversion Time  
l
460
527
ns
t
ACQ
Acquisition Time
t
ACQ
 = t
CYC 
– t
CONV
 – t
BUSYLH 
(Note 10)
l
460
ns
t
CYC
Time Between Conversions
l
1
µs
t
CNVH
CNV High Time
l
20
ns
t
BUSYLH
CNV
↑ to BUSY Delay
C
L
 = 20pF
l
13
ns
t
CNVL
Minimum Low Time for CNV
(Note 11)
l
20
ns
t
QUIET
SCK Quiet Time from CNV
↑
(Note 10)
l
20
ns
t
SCK
SCK Period
(Notes 11, 12)
l
10
ns
 The 
l
 denotes the specifications which apply over the full operating 
temperature range, otherwise specifications are at T
A
 = 25°C. (Note 4)
power requireMenTs
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
DD
Supply Voltage
l
2.375
2.5
2.625
V
OV
DD
Supply Voltage
l
1.71
5.25
V
I
VDD 
I
OVDD 
I
PD 
I
PD
Supply Current 
Supply Current 
Power Down Mode 
Power Down Mode
1Msps Sample Rate 
1Msps Sample Rate (C
L
 = 20pF) 
Conversion Done (I
VDD
 + I
OVDD
 + I
REF
) 
Conversion Done (I
VDD
 + I
OVDD
 + I
REF
, H-Grade)
l 
 
l 
l
5.4 
0.2 
0.9 
0.9
6.3 
 
90 
140
mA 
mA 
µA 
µA
P
D
Power Dissipation 
Power Down Mode 
Power Down Mode
1Msps Sample Rate 
Conversion Done (I
VDD
 + I
OVDD
 + I
REF
) 
Conversion Done (I
VDD
 + I
OVDD
 + I
REF
, H-Grade)
13.5 
2.25 
2.25
15.8 
225 
315
mW 
µW 
µW
 The 
l
 denotes the specifications which apply over the full operating temperature 
range, otherwise specifications are at T
A
 = 25°C. (Note 4)
reFerence inpuT
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
REF
Reference Voltage
(Note 5)
l
2.5
5.1
V
I
REF
Reference Input Current
(Note 9)
l
0.65
0.75
mA
V
IHDGC
High Level Input Voltage REF/DGC Pin
l
0.8V
REF
V
V
ILDGC
Low Level Input Voltage REF/DGC Pin
l
0.2V
REF
V
 The 
l
 denotes the specifications which apply over the full operating temperature range, otherwise 
specifications are at T
A
 = 25°C. (Note 4)
DigiTal inpuTs anD DigiTal ouTpuTs
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
 The 
l
 denotes the specifications which apply over the 
full operating temperature range, otherwise specifications are at T
A
 = 25°C. (Note 4)