EVM6436 SEMTECH [Semtech Corporation], EVM6436 Datasheet - Page 7

• Manufacturer Part Number: EVM6436
• Description: Per-Pin Electronics Companion DAC
• Manufacturer: SEMTECH [Semtech Corporation]

Chip Overview
The Edge6435/6436 provides 40 output levels. These
outputs can easily be configured to generate the specific
analog voltage and current requirements for 4 or 8
channels of ATE pin electronics including:
without requiring any scaling or shifting via external
components.
Selection of 4 or 8 channel format is via the FORMAT
input.
Programming of the chip is done using a 6 wire digital
interface comprised of:
TEST AND MEASUREMENT PRODUCTS
Circuit Description
2006 Semtech Corp. / Rev. 3, 8/25/06
–
–
–
–
–
–
–
Note 1:
Note 2:
3 level driver
Window comparator
Active load
Per pin PMU or PTU
Serial Data In
Clock In
Load
t A
o T
y T
R
O
d A
o C
# (
s e
u
e p
i r t
l a t
u j
m
p t
l o
f o
t s
u b
i l p
M
O
t u
#
i t u
b a
s f f
i b
x a
n a
e t
f o
n o
R
) s t
e l
t e
e c
a
D
D
g n
O
C A
R
The max DAC range is achieved through specific AVCC, AVEE, and Gain resistor settings. See the
equations in the "DAC Voltage Output Overview", "DAC Current Output Overview", and specifications
for details.
Group C has both voltage and current outputs.
A
u
n a
s C
: e
p t
R
e g
t u
n a
n i
O
e g
G
s f f
o r
N (
t e
p u
o
e t
) 1
4
8
C
C
H
H
o F
o F
m r
m r
t a
t a
–
. 3
4
2
V 5
e p
e p
±
1
Table 1. DAC Grouping
G
2
6
c r
c r
o r
o t
y
1
0
7 .
A
V
s e
3
0
a h
a h
p u
0 –
V 5
A µ
n n
n n
7 .
l e
l e
V 5
Grouping of DACs
DACs are separated into 4 or 8 channels of 4 distinct
functional groups. Groups are defined by:
Table 1 defines the DACs on a per group and channel
basis.
Group C DACs have both voltage and current output pins.
Group C DACs can be individually configured via the serial
interface to be either a voltage or current DAC (but not
both at the same time).
Tables 3 and 4 identify the code needed to configure Group
C DACs. Please note that 24 clock cycles are required to
load the configuration code for each channel.
–
– Type (voltage or current output)
– Resolution (# of bits)
– Output range
– Output compliance.
. 3
2
1
V 5
e p
e p
±
7
1
G
2
c r
c r
6
o r
o t
y
1
0
7 .
B
V
s e
3
a h
0
a h
p u
0 –
V 5
A µ
n n
n n
7 .
l e
l e
V 5
–
0 –
. 3
2
1
±
y
V 5
o n
s e
e p
e p
2 .
2
N (
2
1
G
0 .
0
c r
c r
6
o t
o
r o f
r o f
o r
o t
I / V
1
0
7 .
r o
5
C
e t
3
a h
a h
p u
µ
+
0 –
V 5
m
o V
o I
) 2
( A
n n
n n
V 3
A
t u
7 .
t u
) V
Edge6435/6436
l e
l e
) I (
V 5
2
1
0 –
e p
e p
2 .
1
G
c r
c r
6 .
o r
o n
o t
D
6
I
a h
a h
p u
m
+
A
n n
n n
V 3
l e
l e
www.semtech.com