HITACHI HA17408P

HA17408P
8-Bit Multiplying Digital-to-Analog Converter
Description
The HA17408P is an 8-bit monolithic D/A converter that incorporates a reference current amplifier, an R-2R
resistor ladder, and eight high-speed current switches.
Circuit designers can set the maximum output current to match the needs of their applications by setting the
reference voltage and selecting a resistor value.
The reference current is distributed to the current value for each bit by the R-2R resistor ladder, and thus the
maximum output current is 255/256 times the reference current. For example, the largest output current that
can be acquired for a reference input current of 2.0 mA is 1.992 mA.
The HA17408P can be used in a wide range of applications including CRT displays, stepping motor control,
programmable power supplies, audio equipment, and attenuators.
Features
•
A linearity of ±0.19% (± 1/2 LSB) is guaranteed.
•
Short centering time (250 ns typical) for rapid conversions
•
Low power dissipation: 157 mW typical
•
Compatible with TTL and CMOS logic
•
Standard supply voltages of VCC = +5.0 V, VEE = –5.0 V and = –15.0 V
•
Wide output voltage range: +0.5 to –5.0 V
475
HA17408P
Pin Arrangement
Block Diagram
476
HA17408P
Absolute Maximum Ratings (Ta = 25°C)
Item
Symbol
Rated Value
Unit
Power-supply voltage
VCC
5.5
V
VEE
–16.5
V
Digital input voltage
V5 to V12
0 to +5.5
V
Output voltage
VO
0.5 to –5.2
V
Reference current
I14
5.0
mA
Reference amplifier input voltage range
VREF
VCC, VEE
V
Allowable power dissipation
PT
625
mW
Operating temperature
Topr
–20 to +75
°C
Storage temperature
Tstg
–55 to +125
°C
Electrical Characteristics (VCC = 5.0 V, VEE = –15 V, Iref = 2 mA, Ta = 25°C)
Item
Symbol Min
Typ
Max
Unit
Relative error
ER
—
—
±0.19
%FS
Settling time
(± 1/2 LSB)
ts
—
250
—
ns
Transmission
delay time
tPLH , tPHL —
30
100
ns
Maximum output
current drift
TCIO
—
±20
—
ppm/°C
Digital input level
VIH
2.0
—
—
V
Test Condition
All bits OFF → ON
VIL
—
—
0.8
V
Digital input
current
IIH
—
0
0.04
mA
VIH = 5.0 V
IIL
–0.8
–0.002
—
mA
VIL = 0.8 V
Reference input
bias current
I15
–3.0
–1.0
—
µA
Output current
range
IOR
0
2.0
2.1
mA
VEE = –5.0 V
0
2.0
4.2
mA
VEE = –7.0 to –15 V
Output current
IO
1.9
1.99
2.1
mA
Vref = 2.000 V, R 14 = 1.000
IO (min)
—
0
4.0
µA
All bits low
Output voltage
range
VO
–0.6
—
+0.5
V
VEE = –5 V
–5.0
—
+0.5
V
VEE < –10 V
Reference
current slew rate
STIref
—
4.0
—
mA/µs
477
HA17408P
Electrical Characteristics (VCC = 5.0 V, VEE = –15 V, Iref = 2 mA, Ta = 25°C) (cont)
Item
Symbol Min
Typ
Max
Unit
Current drain
ICC
—
1.9
14
mA
IEE
–13
–5.8
—
mA
Power-supply
voltage
VCC
4.5
5.0
5.5
V
VEE
–16.5
–15
–4.5
V
Power dissipation
PT
—
34
136
mW
—
97
265
mW
—
34
—
mW
—
97
—
mW
Settling Time Test Circuit
478
Test Condition
All bits
low
VEE = –5.0 V
All bits
high
VEE = –5.0 V
VEE = –15 V
VEE = –15 V