HA17408P [HITACHI]
8-Bit Multiplying Digital-to-Analog Converter; 8位乘法数位类比转换器
| 型号： | HA17408P |
| 厂家： | 
HITACHI SEMICONDUCTOR |
| 描述： | 8-Bit Multiplying Digital-to-Analog Converter |
| 文件： | 总4页 (文件大小：25K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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, V = –5.0 V and = –15.0 V
EE
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
5.5
Unit
V
Power-supply voltage
VCC
VEE
–16.5
V
Digital input voltage
V5 to V12
VO
0 to +5.5
0.5 to –5.2
5.0
V
Output voltage
V
Reference current
I14
mA
V
Reference amplifier input voltage range
Allowable power dissipation
Operating temperature
Storage temperature
VREF
PT
VCC, VEE
625
mW
°C
°C
Topr
Tstg
–20 to +75
–55 to +125
Electrical Characteristics (VCC = 5.0 V, VEE = –15 V, Iref = 2 mA, Ta = 25°C)
Item
Symbol Min
Typ
—
Max
±0.19
—
Unit
%FS
ns
Test Condition
Relative error
ER
ts
—
—
Settling time
(± 1/2 LSB)
250
All bits OFF ® ON
Transmission
delay time
tPLH, tPHL
TCIO
—
—
30
100
—
ns
Maximum output
current drift
±20
ppm/°C
Digital input level
V
2.0
—
—
—
V
IH
V
IL
—
0.8
0.04
—
V
Digital input
current
IIH
IIL
—
0
mA
mA
µA
V = 5.0 V
IH
–0.8
–3.0
–0.002
–1.0
V = 0.8 V
IL
Reference input
bias current
I15
—
Output current
range
IOR
0
2.0
2.0
1.99
0
2.1
4.2
2.1
4.0
+0.5
+0.5
—
mA
mA
mA
µA
VEE = –5.0 V
0
VEE = –7.0 to –15 V
Vref = 2.000 V, R14 = 1.000
All bits low
Output current
IO
1.9
—
IO (min)
VO
Output voltage
range
–0.6
–5.0
—
—
V
VEE = –5 V
—
V
VEE < –10 V
Reference
STIref
4.0
mA/µs
current slew rate
477
HA17408P
Electrical Characteristics (VCC = 5.0 V, VEE = –15 V, Iref = 2 mA, Ta = 25°C) (cont)
Item
Symbol Min
Typ
1.9
–5.8
5.0
–15
34
Max
14
Unit
mA
mA
V
Test Condition
Current drain
ICC
IEE
—
–13
4.5
–16.5
—
—
Power-supply
voltage
VCC
VEE
PT
5.5
–4.5
136
265
—
V
Power dissipation
mW
mW
mW
mW
All bits
low
VEE = –5.0 V
—
97
VEE = –15 V
VEE = –5.0 V
VEE = –15 V
—
34
All bits
high
—
97
—
Settling Time Test Circuit
478
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