LTC1661CMS8 Linear Technology, LTC1661CMS8 Datasheet - Page 11

• Manufacturer Part Number: LTC1661CMS8
• Description: IC D/A CONV 10BIT MICRPWR 8-MSOP
• Manufacturer: Linear Technology

Specifications of LTC1661CMS8

• Settling Time: 30µs
• Number Of Bits: 10
• Data Interface: Serial
• Number Of Converters: 2
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 260µW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

TYPICAL APPLICATIONS
CS/LD
SCK
D
IN
1
1
3
2
3
2
4
4
Figure 4. Using the LTC1258 and the LTC1661 In a Single Li-Ion Battery Application
LTC1661
LTC1661
DAC A
DAC B
DAC B
DAC A
6
6
U1
U2
5V
5V
7
Figure 3. Pin Driver V
0.1µF
0.1µF
LTC1258-4.1
V
IN
2
≥ 4.3V
4
8
V
5
V
5
V
8
V
A1
B1
B2
A2
= 2.5V
= 2.5V
(FROM MAIN
50k
50k
50k
50k
(FROM MAIN
R2
R3
R5
R7
INPUT DAC)
INPUT DAC)
0.1µF
1
V
V
L
H
4.096V
= –2.5V
= 7.5V
R1
5k
R8
5k
3
2
6
5
–
+
+
–
LT1368
LT1368
H
U3A
U3B
8
4
10V
–5V
4
3
2
1
and V
REF
D
SCK
CS/LD
IN
0.1µF
R6
5k
0.1µF
LTC1661
R4
5k
L
6
GND
V
1
7
Adjustment in ATE Applications
CC
7
V
V
OUTA
OUTB
V
V
0.1µF
L
H
′ = V
′ = V
8
5
L
H
+ ∆V
+ V
0.1µF
0.1µF
V
V
V
FOR VALUES SHOWN,
∆V
∆V
H
L
A1
H
0V TO 4.096V
(4mV/BIT)
T
0V TO 4.096V
(4mV/BIT)
L
1661 F04
′ =
′ =
H
H
=
LOGIC
DRIVE
, ∆V
, ∆V
FOR EACH U1 AND U2
CODE A CODE B ∆V
V
V
V
512
512
512
A2
H
L
–2.5V 250mV
L
L
+
+
ADJUSTMENT RANGE = ±250mV
STEP SIZE = 500µV
= 2.5V
V
V
H
L
R1
R2
R1
R2
(1 0F N)
DRIVER
PIN
(V
(V
1023
512
0
A1
A2
– V
– V
B1
B2
–250mV
250mV
7.5V 250mV
)
)
H
V
, ∆V
0
OUT
LTC1661
L
1661 F03
11
1661fa