LTC1417_15 Datasheet, PDF (4/32 Pages) Linear Technology – Low Power 14-Bit, 400ksps Sampling ADC Converter with Serial I/O

LTC1417
POWER REQUIRE E TS _{The q indicates specifications which apply over the full operating temperature range,}
otherwise specifications are at T_A = 25°C. (Note 5)
SYMBOL PARAMETER
CONDITIONS
V_DD
Positive Supply Voltage (Notes 10, 11)
V_SS
Negative Supply Voltage (Note 10)
Bipolar Only (V_SS = 0V for Unipolar)
I_DD
Positive Supply Current
Unipolar, RD High (Note 5)
Bipolar, RD High (Note 5)
Nap Mode
Sleep Mode
SHDN = 0V, RD = 0V
SHDN = 0V, RD = 5V
I_SS
Negative Supply Current
Nap Mode
Sleep Mode
Bipolar, RD High (Note 5)
SHDN = 0V, RD = 0V
SHDN = 0V, RD = 5V
P_DIS
Power Dissipation
Unipolar
Bipolar
MIN
TYP
MAX
UNITS
4.75
5.25
V
– 4.75
– 5.25
V
q
4.0
5.5
mA
q
4.3
6.0
mA
750
µA
0.1
µA
q
2.0
2.8
mA
0.7
µA
1.5
nA
q
20.0
27.5
mW
q
31.5
44
mW
WU
TI I G CHARACTERISTICS The q indicates specifications which apply over the full operating temperature
range, otherwise specifications are at T_A = 25°C. (Note 5)
SYMBOL
f_SAMPLE(MAX)
t_CONV
t_ACQ
t_ACQ + t_CONV
t₁
t₂
t₃
t₄
t₅
t₆
t₇
PARAMETER
Maximum Sampling Frequency
Conversion Time
Acquisition Time
Acquisition Plus Conversion Time
SHDN↑ to CONVST↓ Wake-Up Time from Nap Mode
CONVST Low Time
CONVST to BUSY Delay
Data Ready Before BUSY↑
Delay Between Conversions
Wait Time RD↓ After BUSY↑
Data Access Time After RD↓
CONDITIONS
(Note 10)
(Notes 10, 11)
C_L = 25pF
C_L = 25pF
(Note 10)
C_L = 25pF
C_L = 100pF
t₈
t₉
t₁₀
t₁₁
t₁₂
f_SCLK
f_EXTCLKIN
t_dEXTCLKIN
Bus Relinquish Time
RD Low Time
CONVST High Time
Delay Time, SCLK↓ to D_OUT Valid
Time from Previous Data Remain Valid After SCLK↓
Shift Clock Frequency
C_L = 25pF
C_L = 25pF
(Note 13)
External Conversion Clock Frequency
Delay Time, CONVST↓ to External Conversion Clock Input (Note 9)
MIN
TYP
MAX
UNITS
q 400
kHz
q
1.8
2.25
µs
q
150
500
ns
q
2.1
2.5
µs
500
ns
q 40
ns
q
35
70
ns
q
7
12
ns
q 250
ns
q –5
ns
15
30
ns
q
40
ns
20
40
ns
q
55
ns
q
35
ns
q
t₇
ns
q 40
ns
q
15
40
ns
q
5
10
ns
q
0
20
MHz
q 0.05
9
MHz
q
20
µs
4
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