Datasheet

2
LTC1746
1746f
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) ● 14 Bits
Integral Linearity Error (Note 6) ● –3 ±1 3 LSB
Differential Linearity Error ● –1 ±0.5 1 LSB
Offset Error (Note 7) ● –30 ±530 mV
Gain Error External Reference (SENSE = 1.6V) ● –2.5 ±1 2.5 %FS
Full-Scale Tempco I
OUT(REF)
= 0 ±40 ppm/°C
ORDER PART
NUMBER
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 (Note 4) ..... –0.3V to (V
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
LTC1746C ............................................... 0°C to 70°C
LTC1746I............................................ – 40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
LTC1746CFW
LTC1746IFW
T
JMAX
= 150°C, θ
JA
= 35°C/W
The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
UU
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
TOP VIEW
FW PACKAGE
48-LEAD PLASTIC TSSOP
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
SENSE
V
CM
GND
A
IN
+
A
IN
–
GND
V
DD
V
DD
GND
REFLB
REFHA
GND
GND
REFLA
REFHB
GND
V
DD
V
DD
GND
V
DD
GND
MSBINV
ENC
ENC
OF
OGND
D13
D12
D11
OV
DD
D10
D9
D8
D7
OGND
GND
GND
D6
D5
D4
OV
DD
D3
D2
D1
D0
OGND
CLKOUT
OE
CO VERTER CHARACTERISTICS
U
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (Note 8) 4.75V ≤ V
DD
≤ 5.25V ● ±1 to ±1.6 V
I
IN
Analog Input Leakage Current ● –1 1 µA
C
IN
Analog Input Capacitance Sample Mode ENC < ENC 8 pF
Hold Mode ENC > ENC 4 pF
t
ACQ
Sample-and-Hold Acquisition Time ● 15 18 ns
t
AP
Sample-and-Hold Acquisition Delay Time 0 ns
t
JITTER
Sample-and-Hold Acquisition Delay Time Jitter 0.3 ps
RMS
CMRR Analog Input Common Mode Rejection Ratio 1.0V < (A
IN
–
= A
IN
+
) < 3.5V 80 dB
The ● indicates specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 5)
A ALOG I PUT
UU
Consult LTC Marketing for parts specified with wider operating temperature ranges.