MC3410 Datasheet, PDF (5/8 Pages) NXP Semiconductors – 10-Bit high-speed multiplying D/A converter

Philips Semiconductors Linear Products
10-Bit high-speed multiplying D/A converter
Product specification
MC3410,
MC3410C
When a DC reference voltage is used, capacitive bypass to ground
is recommended. The 5V logic supply is not recommended as a
reference voltage. If a well regulated 5.0V supply, which drives logic,
is to be used as the reference, R₁₆ should be decoupled by
connecting it to the +5.0V logic supply through another resistor and
bypassing the junction of the two resistors with a 0.1µF capacitor to
ground.
The reference amplifier is internally-compensated with a 10pF
feed-forward capacitor, which gives it its high slew rate and fast
settling time. Proper phase margin is maintained with all possible
values of R₁₆ and reference voltages which supply 2.0mA reference
current into Pin 16. The reference current can also be supplied by a
high impedance current source of 2.0mA. As R₁₆ increases, the
bandwidth of the amplifier decreases slightly and settling time
increases. For a current source with a dynamic output impedance of
1.0MΩ, the bandwidth of the reference amplifier is approximately
half what it is in the case of R₁₆=1.0kΩ, and settling time is ≈ 10µs.
The reference amplifier phase margin decreases as the current
source value decreases in the case of a current source reference,
so that the minimum reference current supplied from a current
source is 0.5mA for stability.
(4)
MSB
(5)
D₁
D₂
(6)
(7)
D₃
D₄
OUTPUT VOLTAGE COMPLIANCE
The output voltage compliance ranges from -2.5 to +0.2V. 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_EE>-15V.
ACCURACY
Absolute accuracy is a measure of each output current level with
respect to its intended value. It is dependent upon relative accuracy
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 MC3410 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 MC3410 has a low full-scale
current drift with temperature.
The MC3410 are accurate to within ±0.05% at 25°C with a reference
current of 2.0mA on Pin 16.
(13)
(8)
(9)
(10)
(11)
(12)
LSB
D₅
D₆
D₇
D₈
D₉
D₁₀
GND
(2)
SEGMENT
DECODER
I_OUT
(3)
V_BIAS
(INTERNAL)
2R
2R
2R
2R
2R
2R
2R
2R
R
R
R
R
R
R
(16)
+
V_REF
+
(15)
–
–
2R₁
R₁
R₁
R₁
R₁
CODE SELECTED 0111110011
V_EE (1)
Figure 5. MC3410 Equivalent Circuit
August 31, 1994
747