2
LTC1821
V
CC
to AGNDF, AGNDS ............................... – 0.3V to 7V
V
CC
to DGND .............................................. –0.3V to 7V
Total Supply Voltage (V
+
to V
–
) ............................... 36V
AGNDF, AGNDS to DGND ............................. V
CC
+ 0.3V
DGND to AGNDF, AGNDS ............................. V
CC
+ 0.3V
REF, R
COM
to AGNDF, AGNDS, DGND .................. ±15V
R
OFS
, R
FB
, R1, to AGNDF, AGNDS, DGND ............ ±15V
Digital Inputs to DGND ............... –0.3V to (V
CC
+ 0.3V)
I
OUT
to AGNDF, AGNDS............... –0.3V to (V
CC
+ 0.3V)
Maximum Junction Temperature .......................... 150°C
Operating Temperature Range
LTC1821C/LTC1821-1C.......................... 0°C to 70°C
LTC1821I/LTC1821-1I ....................... –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
(Note 1)
ORDER PART
NUMBER
LTC1821ACGW
LTC1821BCGW
LTC1821-1ACGW
LTC1821-1BCGW
LTC1821AIGW
LTC1821BIGW
LTC1821-1AIGW
LTC1821-1BIGW
T
JMAX
= 125°C, θ
JA
= 80°C/W
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
TOP VIEW
GW PACKAGE
36-LEAD PLASTIC SSOP WIDE
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
WR
LD
NC
DNC*
V
–
DNC*
DGND
V
CC
D3
D2
D1
D0
CLR
REF
R
COM
R1
R
OFS
R
FB
V
OUT
I
OUT
V
+
AGNDS
AGNDF
DNC*
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= T
MIN
to T
MAX
,
V
+
= 15V, V
–
= –15V, V
CC
= 5V, V
REF
= 10V, AGNDF = AGNDS = DGND = 0V.
*DO NOT CONNECT
LTC1821B/-1B LTC1821A/-1A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Accuracy
Resolution ● 16 16 Bits
Monotonicity ● 16 16 Bits
INL Integral Nonlinearity T
A
= 25°C (Note 2) ±2 ±0.25 ±1LSB
T
MIN
to T
MAX
● ±2 ±0.35 ±1LSB
DNL Differential Nonlinearity T
A
= 25°C ±1 ±0.2 ±1LSB
T
MIN
to T
MAX
● ±1 ±0.2 ±1LSB
GE Gain Error Unipolar Mode
T
A
= 25°C (Note 3) ±16 ±5 ±16 LSB
T
MIN
to T
MAX
● ±24 ±8 ±16 LSB
Bipolar Mode
T
A
= 25°C (Note 3) ±16 ±2 ±16 LSB
T
MIN
to T
MAX
● ±24 ±5 ±16 LSB
Gain Temperature Coefficient ∆Gain/∆Temperature (Note 4) ● 1 3 1 3 ppm/°C
Unipolar Zero-Scale Error T
A
= 25°C ±3 ±0.25 ±2LSB
T
MIN
to T
MAX
● ±6 ±0.50 ±4LSB
Bipolar Zero Error T
A
= 25°C ±12 ±2 ±8LSB
T
MIN
to T
MAX
● ±16 ±3 ±10 LSB
PSRR Power Supply Rejection Ratio V
CC
= 5V ±10% ● 2 0.7 2 LSB/V
V
+
, V
–
= ±4.5V to ±16.5V ● ±2 ±0.1 ±2 LSB/V
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
ELECTRICAL CHARACTERISTICS
Consult factory for parts specified with wider operating temperature ranges.