LTC2337-18_15 Datasheet, PDF (4/24 Pages) Linear Technology – True Bipolar, Fully Differential Input ADC with 100dB SNR

LTC2337-18
Internal Reference 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
V_REFIN
Internal Reference Output Voltage
V_REFIN Temperature Coefficient
REFIN Output Impedance
(Note 14)
2.043
l
2.048
2
15
2.053
20
V
ppm/°C
kΩ
V_REFIN Line Regulation
V_DD = 4.75V to 5.25V
0.08
mV/V
REFIN Input Voltage Range
(REFIN Overdriven) (Note 5)
1.25
2.4
V
Reference Buffer 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
V_REFBUF Reference Buffer Output Voltage V_REFIN = 2.048V
REFBUF Input Voltage Range (REFBUF Overdriven) (Notes 5, 9)
l 4.091 4.096 4.101
V
l 2.5
5
V
REFBUF Output Impedance
V_REFIN = 0V
I_REFBUF REFBUF Load Current
V_REFBUF = 5V (REFBUF Overdriven) (Notes 9, 10)
l
V_REFBUF = 5V, Nap Mode (REFBUF Overdriven) (Note 9)
13
kΩ
0.72 0.8
mA
0.39
mA
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
V_IL
Low Level Input Voltage
l 0.8 • OV_DD
l
V
0.2 • OV_DD
V
I_IN
Digital Input Current
V_IN = 0V to OV_DD
l
–10
10
μA
C_IN
V_OH
V_OL
I_OZ
I_SOURCE
Digital Input Capacitance
High Level Output Voltage
Low Level Output Voltage
Hi-Z Output Leakage Current
Output Source Current
I_O = –500µA
I_O = 500µA
V_OUT = 0V to OV_DD
V_OUT = 0V
5
pF
l OV_DD – 0.2
l
V
0.2
V
l
–10
10
µA
–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
Supply Voltage
l 4.75
5
5.25
V
O_VDD
I_VDD
I_OVDD
I_NAP
I_SLEEP
P_D
Supply Voltage
Supply Current
Supply Current
Nap Mode Current
Sleep Mode Current
Power Dissipation
Nap Mode
Sleep Mode
500ksps Sample Rate (IN⁺ = IN^– = 0V)
500ksps Sample Rate (C_L = 20pF)
Conversion Done (I_VDD + I_OVDD)
Sleep Mode (I_VDD + I_OVDD)
500ksps Sample Rate (IN⁺ = IN^– = 0V)
Conversion Done (I_VDD + I_OVDD)
Sleep Mode (I_VDD + I_OVDD)
l 1.71
5.25
V
l
7
8.5
mA
0.1
mA
l
3.9
4.6
mA
l
60
225
μA
l
35
42.5
mW
l
19.5
23
mW
l
0.3
1.1
mW
233718f
4
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