2
LTC1609
1609fa
(Notes 1, 2)
VANA .......................................................................... 7V
VDIG to VANA ........................................................... 0.3V
VDIG ........................................................................... 7V
Ground Voltage Difference
DGND, AGND1 and AGND2 ..............................
±0.3V
Analog Inputs (Note 3)
R1IN, R2IN, R3IN ................................................ ±25V
CAP ............................ VANA + 0.3V to AGND2 – 0.3V
REF .................................... Indefinite Short to AGND2
Momentary Short to VANA
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
ORDER PART
NUMBER
LTC1609CG
LTC1609IG
TJMAX = 125°C, θJA = 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
R1IN
AGND1
R2IN
R3IN
NC
CAP
REF
NC
AGND2
NC
SB/BTC
EXT/INT
DGND
VDIG
VANA
PWRD
BUSY
CS
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 VDIG + 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
R1IN
AGND1
R2IN
R3IN
CAP
REF
AGND2
SB/BTC
EXT/INT
DGND
VDIG
VANA
PWRD
BUSY
CS
R/C
TAG
DATA
DATACLK
SYNC
TJMAX = 125°C, θJA = 130°C/W
The q indicates specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. With external reference (Notes 5, 6).
LTC1609
LTC1609A
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Resolution
q
16
Bits
No Missing Codes
q
15
16
Bits
Transition Noise
0.9
LSBRMS
Integral Linearity Error
(Note 7)
q
±3
±2LSB
Differential Linearity Error
q
– 2
3
–1
1.75
LSB
Bipolar Zero Error
External Reference = 2.5V (Note 8), Bipolar Ranges
q
±10
mV
CONVERTER CHARACTERISTICS
U