參數(shù)資料
型號(hào): AD7846AP
廠商: Analog Devices Inc
文件頁數(shù): 22/24頁
文件大?。?/td> 0K
描述: IC DAC 16BIT LC2MOS VOUT 28PLCC
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝: 1
設(shè)置時(shí)間: 7µs
位數(shù): 16
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 雙 ±
功率耗散(最大): 100mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-LCC(J 形引線)
供應(yīng)商設(shè)備封裝: 28-PLCC(11.51x11.51)
包裝: 管件
輸出數(shù)目和類型: 1 電壓,單極;1 電壓,雙極
采樣率(每秒): 143k
AD7846
Rev. G | Page 7 of 24
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
TOP VIEW
(Not to Scale)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AD7846
DB11
DB12
DB13
DB14
DB15
DB2
DB1
DB0
VDD
VCC
VSS
VOUT
VREF+
VREF–
RIN
DB10
DB9
DB8
DB7
DB6
DGND
DB3
DB4
DB5
LDAC
R/W
CS
CLR
08
49
0-
0
07
Figure 7. PDIP Pin Configuration
25
24
23
22
21
20
19
5
6
7
8
9
10
11
4
3
2
1
28 27 26
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
12 13 14 15 16 17 18
LDAC
CLR
CS
R/W
DGND
DB6
VOUT
VREF+
VREF–
RIN
VSS
DB15
DB14
V
DD
DB0
DB
1
DB2
DB3
DB
4
DB5
DB13
DB12
DB11
DB10
DB9
DB8
DB7
AD7846
VCC
08
49
0-
0
08
Figure 8. CERDIP Pin Configuration
Table 5. Pin Function Descriptions
Pin
Mnemonic
Description
1 to 3
DB2 to DB0
Data I/Os. DB0 is LSB.
4
VDD
Positive Supply for Analog Circuitry. This is +15 V nominal.
5
VOUT
DAC Output Voltage.
6
RIN
Input to Summing Resistor of DAC Output Amplifier. This is used to select output voltage ranges. See Table 6.
7
VREF+
VREF+ Input. The DAC is specified for VREF+ = +5 V.
8
VREF
VREF Input. For unipolar operation connect VREF to 0 V, and for bipolar operation connect it to 5 V. The device is
specified for both conditions.
9
VSS
Negative Supply for the Analog Circuitry. This is 15 V nominal.
10 to 19
DB15 to DB6
Data I/Os. DB15 is MSB.
20
DGND
Ground for Digital Circuitry.
21
VCC
Positive Supply for Digital Circuitry. This is +5 V nominal.
22
R/W
R/W Input. This pin can be used to load data to the DAC or to read back the DAC latch contents.
23
CS
Chip Select Input. This pin selects the device.
24
CLR
Clear Input. The DAC can be cleared to 000…000 or 100…000. See Table 7.
25
LDAC
Asynchronous Load Input to DAC.
26 to 28
DB5 to DB3
Data I/Os.
Table 6. Output Voltage Ranges
Output Range
VREF+
VREF
RIN
0 V to +5 V
+5 V
0 V
VOUT
0 V to +10 V
+5 V
0 V
+5 V to 5 V
+5 V
5 V
VOUT
+5 V to 5 V
+5 V
0 V
+5 V
+10 V to 10 V
+5 V
5 V
0 V
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