LTC2757
19
2757fa
For more information www.linear.com/LTC2757
Typical applicaTions
Figure 2. Basic Connections for SoftSpan V
OUT
DAC with Two Optional Circuits
for Driving I
OUT2
from GND with a Force/Sense Amplifier
+
U2
LT1012
+
U1
LT1468
18-BIT DAC WITH SPAN SELECT
LTC2757
V
OSADJ
V
OSADJ
R
COM
4748
R
IN
1, 2
5
7
6
2
8
1
3
4
R2
R1
GE
ADJ
45, 46
R
OFS
43, 44
REF
5V
5V
15V
REF
R
FB
I
OUT1
V
OUT
41, 42
40
I
OUT2
GND
WR
UPD
READ
D/S
CLR
M-SPAN
5, 6
4, 7
36
35
34
33
20
21
3, 37, 38
C2
150pF
SPAN I/O
S2-S0
C1
27pF
V
DD
17
WR
UPD
READ
D/S
CLR
C3
0.1µF
0.1µF
3
8-16, 23-31 39
DATA I/O
D17-D0
16
+
66
5
1
2 3
I
OUT2F
I
OUT2S
2
3
*SCHOTTKY BARRIER DIODE
FOR MULTIPLYING APPLICATIONS, U2 = LT1468 AND C2 = 15pF
ZETEX*
BAT54S
LT1012
2757 F02
1000pF
ALTERNATE AMPLIFIER FOR OPTIMUM SETTLING TIME PERFORMANCE
66
1
2 3
5
+
LT1468
3
ZETEX
BAT54S
2
200Ω
200Ω
I
OUT2S
I
OUT2F
–15V
0.1µF
LTC2757
20
2757fa
For more information www.linear.com/LTC2757
package DescripTion
LX Package
48-Lead Plastic LQFP (7mm × 7mm)
(Reference LTC DWG # 05-08-1760 Rev Ø)
LX48 LQFP 0907 REVØ
0ϒ – 7ϒ
11ϒ – 13ϒ
0.45 – 0.75
1.00 REF
11ϒ – 13ϒ
9.00 BSC
AA
7.00 BSC
1
2
7.00 BSC
9.00 BSC
48
1.60
MAX
1.35 – 1.45
0.05 – 0.150.09 – 0.20
0.50
BSC
0.17 – 0.27
GAUGE PLANE
0.25
NOTE:
1. PACKAGE DIMENSIONS CONFORM TO JEDEC #MS-026 PACKAGE OUTLINE
2. DIMENSIONS ARE IN MILLIMETERS
3. DIMENSIONS OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.25mm ON ANY SIDE, IF PRESENT
4. PIN-1 INDENTIFIER IS A MOLDED INDENTATION, 0.50mm DIAMETER
5. DRAWING IS NOT TO SCALE
SEE NOTE: 4
C0.30 – 0.50
R0.08 – 0.20
7.15 – 7.25
5.50 REF
1
2
5.50 REF
7.15 – 7.25
48
PACKAGE OUTLINE
RECOMMENDED SOLDER PAD LAYOUT
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
SECTION A – A
0.50 BSC
0.20 – 0.30
1.30 MIN
Please refer to http://www.linear.com/product/LTC2757#packaging for the most recent package drawings.
LTC2757
21
2757fa
For more information www.linear.com/LTC2757
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
revision hisTory
REV DATE DESCRIPTION PAGE NUMBER
A 12/16 Updated amplifier part numbers. 17, 18, 20

LTC2757AILX#PBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Digital to Analog Converters - DAC 18-B SoftSpan IOUT DAC w/ Parallel I/O
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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