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| 型號(hào)： | AS1505-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | DAC |
| 英文描述： | Octal 8-bit Zero-Scale Setting; Package Type: SOIC(150mil)-16 |
| 中文描述： | 八進(jìn)制8位可編程低功耗DAC的具有關(guān)斷和中間刻度重置 |
| 封裝： | SOIC(150mil)-16 |
| 文件頁(yè)數(shù)： | 1/17頁(yè) |
| 文件大?。?/td> | 471K |
| 代理商： | AS1505-T |
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AS1504, AS1505
Octal 8-Bit Programmable Low-Power DACs with
Shutdown and Mid-Scale Reset
1 General Description
Data Sheet
www.austriamicrosystems.com
Revision 1.0
1 - 17
The AS1504/AS1505 are low-power (5μA @ 5V) individ-
ually programmable 8-channel, 8-bit resolution digital-to-
analog converters. All eight DACs share a common ref-
erence-voltage input making them ideal for applications
where adjustments start at a nominal voltage.
Table 1. Standard Products
The devices feature a low-power shutdown reference
input current (5μA) that enables the devices to maintain
individual DAC latch settings during shutdown until nor-
mal operation is resumed.
The devices are controlled via a standard 3-wire serial
interface. Data is shifted into the DACs via the internal
serial-to-parallel shift register.
The AS1504/AS1505 are available in a 16-pin SOIC-150
package.
Figure 1. Block Diagram
2 Key Features
!
8 Individually-Controlled DACs
!
Replaces 8 Potentiometers
!
Standard 3-Wire Serial Interface
!
Single-Supply Operation: +3 to +5V
!
Mid-Scale Reset Pin (AS1504)
!
Separate V
REFL
Range Setting (AS1505)
!
Shutdown Mode:
≤
25μW (I
DD
and I
REF
)
!
Power-On Reset
!
16-pin SOIC-150 Package
3 Applications
The devices are ideal for video amplifier gain control,
video equipment voltage-controlled frequencies and
bandwidths, CRT display geometric corrections and
automatic adjustments, or any other space-limited DAC
application with low power-consumption requirements.
Model
Functionality
AS1504
Mid-Scale Reset Pin
AS1505
Separate V
REFL
Range Settings
DAC
Select
DAC1
GND
V
DD
SDI
CLK
CSN
AS1504 Only
SHDNN
V
REFH
V
REFL
V
OUT
V
REFL
V
REFH
OUT1
DAC8
V
REFH
V
REFL
V
OUT
OUT8
Address
11-Bit
Serial Latch
D
CK
RSN
AS1504/
AS1505
8
8-Bit
Latch
CK
RSN
1
8
8-Bit
Latch
CK
RSN
3
8
8
AS1505 Only
RSN
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