LTC1742 Datasheet, PDF (2/20 Pages) Linear Technology – 14-Bit, 65Msps Low Noise ADC

LTC1742
ABSOLUTE MAXIMUM RATINGS
OV_DD = V_DD (Notes 1, 2)
Supply Voltage (V_DD) ............................................. 5.5V
Analog Input Voltage (Note 3) .... – 0.3V to (V_DD + 0.3V)
Digital Input Voltage (Except OE)
(Note 3) ...................................... – 0.3V to (V_DD + 0.3V)
OE Input Voltage (Note 4) ........ – 0.3V to (OV_DD + 0.3V)
Digital Output Voltage ................. – 0.3V to (V_DD + 0.3V)
OGND Voltage ..............................................– 0.3V to 1V
Power Dissipation ............................................ 2000mW
Operating Temperature Range
LTC1742C ............................................... 0°C to 70°C
LTC1742I ............................................ – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
SENSE 1
V_CM 2
GND 3
A_IN+ 4
A_IN– 5
GND 6
V_DD 7
V_DD 8
GND 9
REFLB 10
REFHA 11
GND 12
GND 13
REFLA 14
REFHB 15
GND 16
V_DD 17
V_DD 18
GND 19
V_DD 20
GND 21
MSBINV 22
ENC 23
ENC 24
48 OF
47 OGND
46 D13
45 D12
44 D11
43 OV_DD
42 D10
41 D9
40 D8
39 D7
38 OGND
37 GND
36 GND
35 D6
34 D5
33 D4
32 OV_DD
31 D3
30 D2
29 D1
28 D0
27 OGND
26 CLKOUT
25 OE
FW PACKAGE
48-LEAD PLASTIC TSSOP
T_JMAX = 150°C, θ_JA = 35°C/W
ORDER PART
NUMBER
LTC1742CFW
LTC1742IFW
Consult LTC Marketing for parts specified with wider operating temperature ranges.
CO VERTER CHARACTERISTICS _{The q indicates specifications which apply over the full operating}
temperature range, otherwise specifications are at T_A = 25°C. (Note 5)
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
Resolution (No Missing Codes)
q
14
Bits
Integral Linearity Error
(Note 6)
– 3 ±0.75
3
LSB
Differential Linearity Error
q
–1
±0.5
1
LSB
Offset Error
(Note 7)
– 35
±5
35
mV
Gain Error
External Reference (SENSE = 1.6V)
– 3.5
±1
3.5
%FS
Full-Scale Drift
Internal Reference
±40
ppm/°C
Full-Scale Drift
External Reference (SENSE = 1.6V)
±20
ppm/°C
Offset Drift
Internal Reference
±20
µV/°C
Input Referred Noise (Transition Noise)
SENSE = 1.6V
0.82
LSB_RMS
A ALOG I PUT _{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
MIN
TYP
MAX UNITS
V_IN
Analog Input Range (Note 8)
I_IN
Analog Input Leakage Current
C_IN
Analog Input Capacitance
4.75V ≤ V_DD ≤ 5.25V
0 < A_IN+, A_IN– < V_DD
Sample Mode ENC < ENC
Hold Mode ENC > ENC
q
±1 to ±1.6
V
q –1
1
µA
8
pF
4
pF
t_ACQ
t_AP
t_JITTER
CMRR
Sample-and-Hold Acquisition Time
Sample-and-Hold Acquisition Delay Time
Sample-and-Hold Acquisition Delay Time Jitter
Analog Input Common Mode Rejection Ratio
1.5V < (A_IN– = A_IN+) < 3V
q
5
7.3
ns
0
ns
0.15
ps_RMS
80
dB
1742f
2