Datasheet

2
LTC1405
1405fa
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
0V
DD
= V
DD
(Notes 1, 2)
Supply Voltage (V
DD
) ................................................. 6V
Negative Supply Voltage (V
SS
) ................................ –6V
Total Supply Voltage (V
DD
to V
SS
) ........................... 12V
Analog Input Voltage
(Note 3) ............................. (V
SS
– 0.3V) to (V
DD
+ 0.3V)
Digital Input Voltage
(Note 4) ............................. (V
SS
– 0.3V) to (V
DD
+ 0.3V)
Digital Output Voltage ........ (V
SS
– 0.3V) to (V
DD
+ 0.3V)
Power Dissipation.............................................. 500mW
Operating Temperature Range
LTC1405C ............................................... 0°C to 70°C
LTC1405I............................................ –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ORDER PART
NUMBER
LTC1405CGN
LTC1405IGN
CO VERTER CHARACTERISTICS
U
Consult factory for parts specified with wider operating temperature ranges.
T
JMAX
= 125°C, θ
JA
= 80°C/W
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
GN PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+A
IN
–A
IN
V
CM
SENSE
V
REF
GND
V
DD
GND
D11 (MSB)
D10
D9
D8
D7
D6
GAIN
OF
CLK
V
SS
GND
V
DD
OV
DD
OGND
D0
D1
D2
D3
D4
D5
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
With Internal 4.096V Reference. Specifications are guaranteed for both dual supply and single supply operation. (Note 5)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) ● 12 Bits
Integral Linearity Error (Note 7) ● ±0.35 ±1 LSB
Differential Linearity Error ● ±0.25 ±1 LSB
Offset Error (Note 8) ±5 12 LSB
● 16 LSB
Full-Scale Error ±10 30 LSB
Full-Scale Tempco I
OUT(REF)
= 0 ±15 ppm/°C
PUT
U
IA
A
U
LOG
The ● denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. Specifications are guaranteed for both dual supply and single supply operation. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (Note 9) V
REF
= 4.096V (SENSE = 0V), GAIN = 5V ● ±2.048 V
+A
IN
– (–A
IN
)V
REF
= 4.096V (SENSE = 0V), GAIN = 0V ● ±1.024 V
V
REF
= 2.048V (SENSE = V
REF
), GAIN = 5V ● ±1.024 V
V
REF
= 2.048V (SENSE = V
REF
), GAIN = 0V ● ±0.512 V
External V
REF
(SENSE = 5V), GAIN = 5V ● ±V
REF
/2 V
External V
REF
(SENSE = 5V), GAIN = 0V ● ±V
REF
/4 V
I
IN
Analog Input Leakage Current ● ±10 µA
C
IN
Analog Input Capacitance Between Conversions 12 pF
During Conversions 6 pF
t
ACQ
Sample-and-Hold Acquisition Time 50 ns