Philips Semiconductors Linear Products
Product specification
10-Bit high-speed multiplying D/A converter
NE/SE5410
DESCRIPTION
The NE5410/SE5410 are 10-bit Multiplying Digital-to-Analog
Converters pin- and function-compatible with the industry-standard
MC3410, but with improved performance. These are capable of
high-speed performance, and are used as general-purpose building
blocks in cost effective D/A systems.
The NE/SE5410 provides complete 10-bit accuracy and differential
non-linearity over temperature, and a wide compliance voltage
range. Segmented current sources, in conjunction with an R/2R
DAC, provide the binary weighted currents. The output buffer
amplifier and voltage reference have been omitted to allow greater
speed, lower cost, and maximum user flexibility.
PIN CONFIGURATION
F Package
V
EE
1
GND 2
OUTPUT 3
D
1
(MSB) 4
D
2
5
D
3
6
D
4
7
D
5
8
16 V
REF
+
15 V
–
REF
10
14 V
CC
13 D (LSB)
12 D
9
11 D
8
10 D
7
9
D
6
TOP VIEW
FEATURES
•
Pin- and function-compatible with MC3410
•
10-bit resolution and accuracy (±0.05%)
•
Guaranteed differential non-linearity over temperature
•
Wide compliance voltage range—-2.5 to +2.5V
•
Fast settling time—250ns typical
•
Digital inputs are TTL- and CMOS-compatible
•
High-speed multiplying input slew rate—20mA/µs
•
Reference amplifier internally-compensated
•
Standard supply voltages +5V and -15V
APPLICATIONS
BLOCK DIAGRAM
MSB
LSB
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
D
10
4
5
6
7
8
9 10 11 12 13
3
CURRENT SWITCHES
I
O
LADDER TERMINATORS
R-2R LADDER
•
Successive approximation A/D converters
•
High-speed, automatic test equipment
•
High-speed modems
•
Waveform generators
•
CRT displays
•
Strip CHART and X-Y plotters
•
Programmable power supplies
•
Programmable gain and attenuation
ORDERING INFORMATION
DESCRIPTION
16-Pin Ceramic Dual In-Line Package (CERDIP)
16-Pin Ceramic Dual In-Line Package (CERDIP)
V
REF(+)
V
REF(–)
16
15
BIAS
CIRCUITRY
REFERENCE
CURRENT
AMPLIFIER
1
V
EE
2
GND
14
V
CC
TEMPERATURE RANGE
0 to +70°C
-55 to +125°C
ORDER CODE
NE5410F
SE5410F
DWG #
0582B
0582B
August 31, 1994
767
853-0945 13721
Philips Semiconductors Linear Products
Product specification
10-Bit high-speed multiplying D/A converter
NE/SE5410
ABSOLUTE MAXIMUM RATINGS
T
A
=+25°C, unless otherwise specified.
SYMBOL
V
CC
V
EE
V
I
V
O
I
REF(16)
V
REF
V
REF(D)
T
A
Digital input voltage
Applied output voltage
Reference current
Reference amplifier inputs
Reference amplifier differential inputs
Operating temperature range
SE5410
NE5410
T
J
T
STG
P
D
Junction temperature
Ceramic package
Storage temperature
Maximum power dissipation
T
A
=25°C (still-air)
1
+150
-65 to +150
1190
°C
°C
mW
-55 to +125
0 to +70
°C
°C
Power supply
PARAMETER
RATING
+7.0
-18
+15
+4, -5.0
2.5
V
CC
, V
EE
0.7
UNIT
V
DC
V
DC
V
DC
V
DC
mA
V
DC
V
DC
NOTES:
1. Derate above 25°C at the following rate:
F package at 9.5mW/°C
DC ELECTRICAL CHARACTERISTICS
(Continued)
V
CC
=+5.0V
DC
, V
EE
=-15V
DC
, I
REF
=2.0mA, all digital inputs at high logic level. SE5410: T
A
=-55°C to +125°C, NE5410 Series: T
A
=0°C to +70°C,
unless otherwise noted.
SYMBOL
∈
R
PARAMETER
Relative accuracy
(Error relative to full scale I
O
)
Differential non-linearity
Settling time to within
±1/2
LSB
(all bits low to high)
Propagation delay time
Output full-scale current drift
Digital input logic levels (all bits)
High level, Logic “1”
Low level, Logic “0”
Digital input current (all bits)
High level, V
IH
= 5.5V
Low level, V
IL
= 0.8V
Reference input bias current (Pin 15)
Output current (all bits high)
Output currents (all bits low)
Output voltage compliance
Reference amplifier slew rate
Reference amplifier settling time
Output current power supply sensitivity
Output capacitance
V
O
= 0
0 to 4.0mA,
±0.1%
V
REF
= 2.000V, R16 = 1000Ω
T
A
= 25°C
T
A
= 25°C
∈
R
< 0.050%
relative to full-scale
20
2.0
0.003
25
0.01
3.937
–1.0
3.996
0
2.0
Over temperature
TEST CONDITIONS
Over Temperature
LIMITS
Min
Typ
±0.025
±1/4
±0.025
±1/4
t
S
t
PLH
t
PHL
TCI
O
V
IH
T
A
= 25°C
T
A
= 25°C
250
35
20
20
40
Max
±0.05
±1/2
±0.05
±1/2
UNIT
%
LSB
%
LSB
ns
ns
ppm/°C
V
DC
0.8
20
–20
–5.0
4.054
0.4
–2.5
+2.5
µA
µA
mA
µA
V
DC
mA/µs
µs
%/%
pF
I
IH
I
IL
I
REF(15)
I
OH
I
OL
V
O
SR I
REF
ST I
REF
PSRR(–)
C
O
August 31, 1994
768
Philips Semiconductors Linear Products
Product specification
10-Bit high-speed multiplying D/A converter
NE/SE5410
DC ELECTRICAL CHARACTERISTICS
V
CC
=+5.0V
DC
, V
EE
=-15V
DC
, I
REF
=2.0mA, all digital inputs at high logic level. SE5410: T
A
=-55°C to +125°C, NE5410 Series: T
A
=0°C to +70°C,
unless otherwise noted.
SYMBOL
C
I
I
CC
I
EE
V
CC
V
EE
PARAMETER
Digital input capacitance (all bits high)
Power supply current (all bits low)
Power supply voltage range
Power consumption
T
A
= 25°C
V
O
= 0
+4.75
–14.25
TEST CONDITIONS
LIMITS
Min
Typ
4.0
+2
–12
+5.0
–15
190
+4
–18
+5.25
–15.75
300
Max
UNIT
pF
mA
V
DC
mW
4.0
ICC IEEPOWER SUPPLY CURRENT (mA)
13
12
11
10
4
3
2
1
0
–75 –50 –25
+I
CC
+V
CC
= +5V
–V
EE
= –15V
I
REF
= 2mA
I
EE
OUTPUT CURRENT (mA)
3.0
+V
CC
= +5V
2.0
–V
EE
= –15V
T
A
= 25°C
1.0
I
REF
= 2mA
0
–1.0
–5
–3
–1 0 1
3
COMPLIANCE VOLTAGE (VOLT)
5
0
25
50
75 100 125
T
A
(°C)
Figure 1. Output Current vs Output Compliance Voltage
OUTPUT COMPLIANCE VOLTAGE (VOLTS)
4.0
3.0
2.0
1.0
0
–1.0
–2.0
–3.0
–4.0
–75 –50 –25
+V
CC
= +5V
–V
EE
= –15V
I
REF
= 2mA
Figure 3. Power Supply Currents vs Temperature
0
25
50
75 100 125
T
A
(°C)
Figure 2. Maximum Output Compliance Voltage
vs Temperature
Figure 4. Reference Amplifier Frequency Response
An on-chip high slew reference current amplifier drives the R/2R
ladder and segment decoder. The currents are scaled in such a way
that, with all bits on, the maximum output current is two times
1023/1024 of the reference amplifier current, or nominally 3.996mA
for a 2.000mA reference input current. The reference amplifier
allows the user to provide a voltage input: out-board resistor R16
(see Figure 6) converts this voltage to a usable current. A current
mirror doubles this reference current and feeds it to the segment
decoder and resistor ladder. Thus, for a reference voltage of 2.0V
and a 1kΩ resistor tied to Pin 16, the full-scale current is
CIRCUIT DESCRIPTION
The NE5410 consists of four segment current sources which
generate the 2 Most Significant Bits (MSBs), and an R/2R DAC
implemented with ion-implanted resistors for scaling the remaining 8
Least Significant Bits (LSBs) (see Figure 5). This approach provides
complete 10-bit accuracy without trimming.
The individual bit currents are switched ON or OFF by
fully-differential current switches. The switches use current steering
for speed.
August 31, 1994
769
Philips Semiconductors Linear Products
Product specification
10-Bit high-speed multiplying D/A converter
NE/SE5410
approximately 4.0mA. This relationship will remain regardless of the
reference voltage polarity.
Connections for a positive reference voltage are shown in Figure 6a.
For negative reference voltage inputs, or for bipolar reference
voltage inputs in the multiplying mode, R15 can be tied to a negative
voltage corresponding to the minimum input level. For a negative
reference input, R16 should be grounded (Figure 6b). In addition,
the negative voltage reference must be at least 3V above the V
EE
supply voltage for best operation. Bipolar input signals may be
handled by connecting R16 to a positive voltage equal to the peak
positive input level at Pin 15.
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
(4)
MSB
D
1
(5)
D
2
(6)
D
3
(7)
D
4
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.
(13)
LSB
D
10
GND
(2)
(8)
D
5
(9)
D
6
(10)
D
7
(11)
D
8
(12)
D
9
I
OUT
(3)
SEGMENT
DECODER
V
BIAS
(INTERNAL)
2R
2R
2R
2R
2R
2R
2R
2R
R
R
R
R
R
R
(16)
+
V
REF
+
CODE SELECTED 0111110011
(15)
–
–
2R
1
R
1
R
1
R
1
R
1
V
EE
(1)
Figure 5. NE5410 Equivalent Circuit
August 31, 1994
770
Philips Semiconductors Linear Products
Product specification
10-Bit high-speed multiplying D/A converter
NE/SE5410
V
R
(+)
R
T
R
16
V
CC
D
1
THROUGH D
10
14
16
R
15
15
I
O
5410
3
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
±
LSB at 25°C
with a reference current of 2.0mA on Pin 16.
1
2
NOTES:
V
EE
R
16
+ R
T
= R
15
= R
REF
R
T
< <R
16
I
O
F.S. = 2 I
R
= V
REF
/R
REF
a. Positive Reference Voltage
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.
R
16
15
I
O
V
R
(–)
R
T
V
CC
R
15
13
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 625Ω is connected to ground, allowing the output
to swing to -2.5V, the settling time increases to 1.5µs.
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, 100µF 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
500Ω load resistor R
L
.
D
1
THROUGH D
10
NOTES:
R
15
+ R
T
= R
16
R
T
< <R
15
IV
REF
≥
R
VEE
+ 3V
1
V
EE
5410
2
b. Negative Reference Voltage
Figure 6. Basic Connections
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
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
August 31, 1994
771
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