Datasheet
2
LTC1609
1609fa
(Notes 1, 2)
V
ANA
.......................................................................... 7V
V
DIG
to V
ANA
........................................................... 0.3V
V
DIG
........................................................................... 7V
Ground Voltage Difference
DGND, AGND1 and AGND2 .............................. ±0.3V
Analog Inputs (Note 3)
R1
IN
, R2
IN
, R3
IN
................................................ ±25V
CAP ............................V
ANA
+ 0.3V to AGND2 – 0.3V
REF....................................Indefinite Short to AGND2
Momentary Short to V
ANA
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART
NUMBER
LTC1609CG
LTC1609IG
T
JMAX
= 125°C, θ
JA
= 95°C/W
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
G PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
R1
IN
AGND1
R2
IN
R3
IN
NC
CAP
REF
NC
AGND2
NC
NC
SB/BTC
EXT/INT
DGND
V
DIG
V
ANA
PWRD
BUSY
CS
NC
NC
R/C
NC
TAG
NC
DATA
DATACLK
SYNC
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Digital Input Voltage (Note 4) ........ DGND – 0.3V to 10V
Digital Output Voltage........ DGND – 0.3V to V
DIG
+ 0.3V
Power Dissipation.............................................. 500mW
Operating Ambient Temperature Range
LTC1609AC/LTC1609C............................ 0°C to 70°C
LTC1609AI/LTC1609I ......................... – 40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ORDER PART
NUMBER
LTC1609CSW
LTC1609ISW
LTC1609ACSW
LTC1609AISW
1
2
3
4
5
6
7
8
9
10
TOP VIEW
SW PACKAGE
20-LEAD PLASTIC SO
20
19
18
17
16
15
14
13
12
11
R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
SB/BTC
EXT/INT
DGND
V
DIG
V
ANA
PWRD
BUSY
CS
R/C
TAG
DATA
DATACLK
SYNC
T
JMAX
= 125°C, θ
JA
= 130°C/W
The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. With external reference (Notes 5, 6).
LTC1609 LTC1609A
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Resolution ● 16 16 Bits
No Missing Codes ● 15 16 Bits
Transition Noise 0.9 0.9 LSB
RMS
Integral Linearity Error (Note 7) ● ±3 ±2LSB
Differential Linearity Error ● –2 3 –1 1.75 LSB
Bipolar Zero Error External Reference = 2.5V (Note 8), Bipolar Ranges ● ±10 ±10 mV
CONVERTER CHARACTERISTICS
U