evm6435 Semtech Corporation, evm6435 Datasheet - Page 13

• Manufacturer Part Number: evm6435
• Description: Per-pin Electronics Companion
• Manufacturer: Semtech Corporation

TEST AND MEASUREMENT PRODUCTS
Circuit Description (continued)
DACSEL
CALSEL
KEY:
V: Value Latch that contains DATA programmed to a DAC (see Figures 4 & 5).
O: Offset Latches that are used to store offset calibration coefficients
G: Gain Latches that are used to store gain calibration coefficients
DAC Output (CODE):
CODE =
2006 Semtech Corp. / Rev. 3, 8/25/06
(two offset latches per DAC allow the DAC to be shared in a system).
(two gain latches per DAC allow the DAC to be shared in a system).
D[12:0]
SR0
SR1
SR2
SR3
SR4
V * (G + 4096)
NOTE: CALSEL common to all DACs assigned to a Channel
4096
Figure 2. Details of DAC Data Latches for 13 Bit DACs (Groups A, B, and C)
STORE
D[9:0]
D[9:0]
D[9:0]
D[9:0]
+ O
D
D
D
D
D
V
V
G
V
G
O
O
R
10
10
10
10
A
B
A
B
SEL
SEL
13
13
10
10
UPDATEA SEQUENCE
13
GENERATOR
4096
13
13
+
13
UPDATEA
D
G
G
O
O
A
a
a
s f f
s f f
D
n i
n i
C
R
t e
t e
F
D
R
R
u
a
g e
g e
R
R
n
a t
g e
g e
t c
t s i
t s i
o i
t s i
t s i
UPDATE
Edge6435/6436
r e
r e
n
r e
r e
A
B
D
A
B
R
R
0
0
0
0
1
2
A
B
R
e
i g
RANK
R
0
0
1
1
0
t s
1
www.semtech.com
r e
S
e
R
0
1
0
1
0
e l
0
t c
o i
S
n
e
S
S
S
S
S
R
R
R
R
R
e l
0
1
2
3
4
t c