PHILIPS MC3410CF 10-bit high-speed multiplying d/a converter Datasheet

Philips Semiconductors Linear Products
Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
DESCRIPTION
PIN CONFIGURATION
The MC3410 series are 10-bit Multiplying Digital-to-Analog
Converters. They are capable of high-speed performance, and are
used as general-purpose building blocks in cost-effective D/A
systems.
F Package
The Philips Semiconductors design provides complete 10-bit
accuracy without laser trimming, and guaranteed monotonicity over
temperature. Segmented current sources, in conjunction with an
R-2R DAC provides the binary weighted currents. The output buffer
amplifier and voltage reference have been omitted to allow greater
speed, lower cost, and maximum user flexibility.
VEE 1
16 VREF +
GND 2
15 VREF –
OUTPUT 3
14 VCC
D1 MSB 4
FEATURES
• 10-bit resolution and accuracy (±0.05%)
• Guaranteed monotonicity over temperature
• Fast settling time—250ns typical
• Digital inputs are TTL and CMOS compatible
• Wide output voltage compliance range
• High-speed multiplying input slew rate—20mA/µs
• Reference amplifier internally-compensated
• Standard supply voltages +5V and -15V
13 D10 (LSB)
D2 5
12 D9
D3 6
11
D4 7
10 D7
D5 8
9
D8
D6
TOP VIEW
BLOCK DIAGRAM
MSB
LSB
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
4
5
6
7
8 9
10 11 12 13
I0
3
CURRENT SWITCHES
APPLICATIONS
LADDER TERMINATORS
• 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
R–2R LADDER
VREF(+)
VREF(–)
16
15
BIAS
CIRCUITRY
REFERENCE
CURRENT
AMPLIFIER
14
VCC
1
VEE
2
GND
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
16-Pin Ceramic Dual In-Line Package (CERDIP)
0 to +70°C
MC3410F
0582B
16-Pin Ceramic Dual In-Line Package (CERDIP)
0 to +70°C
MC3410CF
0582B
August 31, 1994
743
853-0936 13721
Philips Semiconductors Linear Products
Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
ABSOLUTE MAXIMUM RATINGS
TA=+25°C unless otherwise noted
SYMBOL
RATING
UNIT
Power supply
+7.0
VDC
-18
VDC
VI
Digital input voltage
+15
VDC
VO
Applied output voltage
0.5, -5.0
VDC
IREF(16)
Reference current
2.5
mA
VREF
Reference amplifier inputs
VCC, VEE
VDC
VREF(D)
Reference amplifier differential inputs
0.7
VDC
TA
Operating ambient temperature range
MC3410, 3410C
0 to +70
°C
TJ
Junction temperature, ceramic
package
+150
°C
PD
Maximum power dissipation,
1190
mW
VCC
PARAMETER
VEE
TA=25°C (still-air)1
F package
NOTES:
1. Derate above 25°C, at the following rates:
F package at 9.5mW/°C
August 31, 1994
744
Philips Semiconductors Linear Products
Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
ELECTRICAL CHARACTERISTICS
VCC=+5.0VDC, VEE=-15DC,
SYMBOL
V REF
=2.0mA, all digital inputs at high logic level. MC3410 Series: TA=0°C to +70°C, unless otherwise noted.
R16
PARAMETER
Er
Relative accuracy
(error relative to full-scale IO)
TCEr
Relative accuracy drift
(relative to full-scale IO)
Monotonicity
TEST CONDITIONS
MC3410
Min
Typ
TA=25°C
MC3410C
Max
Min
Max
UNIT
±0.05
±0.1
%
1/4
1/2
LSB
2.5
Over temperature
Typ
2.5
10
ppm/°C
10
Bits
tS
Settling time to within ± LSB
(all bits LOW-to-HIGH)
TA=25°C
250
250
ns
tPLH
tPHL
Propagation delay time
TA=25°C
35
20
35
20
ns
TCIO
Output full scale current drift
VIH
Digital input logic levels (all bits)
HIGH-level, Logic “1”
LOW-level, Logic “0”
60
2.0
0.8
70
ppm/°C
VDC
2.0
0.8
IIH
IIL
Digital input current (all bits)
HIGH-level, VIH=5.5V
LOW-level, VIL=0.8V
-0.05
+.04
-0.4
-0.05
+.04
-0.4
IREF(15)
Reference input bias current (Pin 15)
-1.0
-5.0
-1.0
-5.0
µA
IOR
Output current range
4.0
5.0
4.0
5.0
mA
IOH
Output current (all bits high)
VREF=2.000V,
R16=1000Ω
3.996
4.2
3.996
4.2
mA
IOL
Output current (all bits low)
TA=25°C
4.0
µA
-2.5
+0.2
VDC
VO
Output voltage compliance
SR IREF
Reference amplifier slew rate
ST IREF
Reference amplifier settling time
PSRR(-)
Output current power supply sensitivity
CO
Output capacitance
CI
Digital input capacitance
(all bits high)
ICC
IEE
Power supply current
(all bits low)
VCC
VEE
Power supply voltage range
0
3.8
2.0
0
-2.5
+0.2
TA=25°C
20
0 to 4.0mA, ±0.1%
VO=0
TA=25°C
745
20
2.0
0.003
Power consumption
(all bits low)
(all bits high)
August 31, 1994
3.8
+4.75
-14.25
mA/µs
µs
2.0
0.01
0.003
mA
0.02
%/%
25
25
pF
4.0
4.0
pF
-11.4
+18
-20
+5.0
-15
+5.25
-15.75
220
200
380
+4.75
-14.25
-11.4
+18
-20
+5.0
-15
+5.25
-15.75
VDC
220
200
380
mW
mA
Philips Semiconductors Linear Products
Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
VCC = +5.0V
VEE = -15.0V
TA = 25oC
IREF = 2mA
3.0
2.0
RELATIVE OUTPUT (dB)
OUTPUT CFURRENT (mA)
4.0
1.0
0
–1.0
–5
–3
–1
0
1
3
5
COMPLIANCE VOLTAGE (VOLTS)
OUTPUT COMPLIANCE VOLTAGE (VOLTS)
+VCC = +5V
–VEE = –15V
IREF = 2mA
1.0
0
–1.0
CENTERED AT + 1.0V
0.2 0.3 0.5
1.0
2.0 3.0 5.0
10
The individual bit currents are switched ON or OFF by fully
differential current switches. The switches use current steering for
speed.
–2.0
–3.0
0
25
50 75
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
approximately 4.0mA. This relationship will remain regardless of the
reference voltage polarity.
100 125
Figure 2. Maximum Output Compliance
Voltage vs Temperature
I CC, POWER SUPPLY CURRENT (mA)
A CURVE
LARGE SIGNAL BW
ro = 200Ω
VREF (+) = 2 Vp–p
The MC3410 consists of four segment current sources which
generate the two most significant bits (MSBs), and an R-2R DAC
implemented with ion-implanted resistors for scaling the remaining
eight least significant bits (LSBs) (See Figure 5). This approach
provides complete 10-bit accuracy without trimming.
2.0
TA = (oC)
13
IEE
11
+VCC = +5V
–VEE = –15V
IREF = 2mA
10
4
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 VEE
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.
3
+ICC
2
1
0
0
25 50
TA (oC)
75 100 125
Figure 3. Power Supply Current vs Temperature
August 31, 1994
CENTERED AT + 200mV
CIRCUIT DESCRIPTION
3.0
–75 –50 –25
R15 = R16 = 1.0k
VREF (–) = 0V
Figure 4. Reference Amplifier Frequency Response
4.0
12
B CURVE
SMALL SIGNAL BW
ro = 100Ω
VREF (+) = 50 mV p–p
I, FREQUENCY (MHz)
Figure 1. Output Current vs Output Compliance Voltage
–4.0
–75 –50 –25
18.0
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0
–2.0
–4.0
–6.0
–8.0
–10
–12
0.1
746
Philips Semiconductors Linear Products
Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
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.
OUTPUT VOLTAGE COMPLIANCE
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.
ACCURACY
(4)
MSB
D1
(5)
D2
(6)
D3
(7)
D4
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 VEE>-15V.
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.
(8)
D5
(9)
D6
(10)
D7
(11)
D8
(12)
D9
(13)
LSB
D10
GND
(2)
IOUT
(3)
SEGMENT
DECODER
VBIAS
(INTERNAL)
2R
R
2R
2R
R
2R
R
2R
R
2R
R
2R
R
(16)
+
VREF
+
CODE SELECTED 0111110011
(15)
–
–
2R1
R1
R1
R1
R1
VEE (1)
Figure 5. MC3410 Equivalent Circuit
August 31, 1994
747
2R
Philips Semiconductors Linear Products
Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
VR (+)
RT
VCC
R16
R15
15
16
14
IO
3410
D1 THROUGH D10
1
3
NOTES:
R16 + RT = R15 = RREF
RT < <R16
IO F.S. = 2 IR = VREF/RREF
2
VEE
a. Positive Reference Voltage
RT
VR (–)
VCC
R16
R15
13
15
IO
3410
D1 THROUGH D10
1
NOTES:
R15 + RT = R16
RT < <R15
IVREF ≥ RVEE + 3V
2
VEE
a. Negative Reference Voltage
Figure 6. Basic Connections
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.
MONOTONICITY
The MC3410 and MC3410C 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.
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.
SETTLING TIME
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 RL.
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.
August 31, 1994
748
Philips Semiconductors Linear Products
Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
VCC
0.1µF
+2VDC
14
1k
16
4
RISE AND FALL TIMES ≤ 10ns
2.4V
5
6
1k
15
9
500
3
12
13
VO
VO
11
50
0.5V
MC3410
10
VI
0.4V
RL
8
1.4V
VI
0.1µF
7
0
CO ≤ 25pF
2
tS — 250ns TYPICAL
TO ± 1/2 LSB
USE RL TO GND FOR TURN-OFF MEASUREMENT
FOR SETTLING TIME
MEASUREMENT.
(ALL BIT SWITCHED
LOW TO HIGH)
1
0.1µF
VEE
Figure 7. Settling Time
VCC
0.1µF
14
4
16
1k
15
1k
RISE AND FALL TIMES ≤ 10ns
+2VDC
2.4V
VI
5
6
0.1µF
0.4V
7
8
9
MC3410
10
3
VO
11
12
13
VI
50
2
VO
RL
20
0V
–80mV
TO ± 1/2 LSB
1
0.1µF
tPHL
tPLH
FOR PROPAGATION
DELAY TIME
VEE
Figure 8. Propagation Delay Time
August 31, 1994
749
Philips Semiconductors Linear Products
Product specification
MC3410,
MC3410C
10-Bit high-speed multiplying D/A converter
VCC
0.1µF
VREF (+)
2V
0
14
4
16
1k
15
1k
2.0V
5
6
7
8
9
0.1µF
VREF (+)
0
RL
500
MC3410
10
3
12
0
≤ 25pF
2
SLEW RATE
VO
VO
11
13
0.5V
tS = 2µs TYPICAL
TO ±0.1%
NOTE:
1
Use RL = 20Ω to GND for slew rate measurement.
0.1µF
VEE
Figure 9. Reference Amplifier Settling Time and Slew Rate
µP
BUS
CONTROL
SIGNAL
FROM µP
7
6
5
4
3
2
1
0
OE
D10
D9
8-BIT
LATCH
LS373
D8
D7
D6
D5
D4
10-BIT
DAC
(MC3410)
D3
D2
D1
E2
E1
2-BIT
Q0
LATCH
1/2 LS375 Q2
E0-2
E1
E2
ÉÉÉÉ
ÉÉÉÉ
ÉÉÉÉ
ÉÉÉÉ
DATA
E2-3
Q2
2-BIT
LATCH Q3
1/2 LS375
ÉÉ
ÉÉ
ÉÉ
ÉÉ
D1 - D2
ÉÉÉÉÉ
ÉÉÉÉÉ
ÉÉÉÉÉ
ÉÉÉÉÉ
D3 - D10
Figure 10. Interfacing 10-Bit DAC With 8-Bit Microprocessor
August 31, 1994
750
OUTPUT
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