NE5410 Philips, NE5410 Datasheet - Page 5

• Manufacturer Part Number: NE5410
• Description: 10-Bit high-speed multiplying D/A converter
• Manufacturer: Philips

Philips Semiconductors Linear Products
OUTPUT VOLTAGE COMPLIANCE
The output voltage compliance ranges from -2.5 to +2.5V. As shown
in Figure 2, this compliance range is nearly constant over
temperature. At the temperature extremes, however, the compliance
voltage may be reduced if V
ACCURACY
Absolute accuracy is a measure of each output current level with
respect to its intended value. It is dependent upon relative accuracy
August 31, 1994
NOTES:
R
R
I
NOTES:
R
R
IV
O
10-Bit high-speed multiplying D/A converter
T
T
16
15
REF
F.S. = 2 I
< <R
< <R
+ R
+ R
D
D
1
1
T
T
R
THROUGH D
16
THROUGH D
15
= R
= R
VEE
R
15
16
= V
+ 3V
= R
REF
REF
Figure 6. Basic Connections
/R
10
10
REF
V
R
V
CC
(+)
b. Negative Reference Voltage
a. Positive Reference Voltage
V
CC
V
V
EE
EE
EE
R
14
1
1
>-15V.
T
16
13
R
V
R
16
R
15
(–)
5410
5410
2
2
R
T
15
15
R
R
15
16
3
I
I
O
O
771
and full-scale current drift. Relative accuracy, or linearity, is the
measure of each output current with respect to its intended fraction
of the full-scale current. The relative accuracy of the NE5410 is fairly
constant over temperature due to the excellent temperature tracking,
of the implanted resistors. The full-scale current from the reference
amplifier may drift with temperature causing a change in the
absolute accuracy. However, the NE5410 has a low full-scale
current drift with temperature.
The SE5410 and the NE5410 are accurate to within
with a reference current of 2.0mA on Pin 16.
MONOTONICITY
The NE5410 and SE5410 are guaranteed monotonic over
temperature. This means that for every increase in the input digital
code, the output current either remains the same or increases but
never decreases. In the multiplying mode, where reference input
current will vary, monotonicity can be assured if the reference input
current remains above 0.5mA.
SETTLING TIME
The worst-case switching condition occurs when all bits are
switched “on,” which corresponds to a LOW-to-HIGH transition for
all bits. This time is typically 250ns for the output to settle to within
1/2LSB for 10-bit accuracy, and 200ns for 8-bit accuracy. The
turn-off time is typically 120ns. These times apply when the output
swing is limited to a small (<0.7V) swing and the external output
capacitance is under 25pF.
The major carry (MSB off-to-on, all others on-to-off) settles in
approximately the same time as when all bits are switched off-to-on.
If a load resistor of 625 is connected to ground, allowing the output
to swing to -2.5V, the settling time increases to 1.5 s.
Extra care must be taken in board layout as this is usually the
dominant factor in satisfactory test results when measuring settling
time. Short leads, 100 F supply bypassing, and minimum scope
lead length are all necessary.
A typical test setup for measuring settling time is shown in Figure 7.
The same setup for the most part can be used to measure the slew
rate of the reference amplifier (Figure 9) by tying all data bits high,
pulsing the voltage reference input between 0 and 2V, and using a
500 load resistor R
L
.
NE/SE5410
Product specification
LSB at 25 C