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參數(shù)資料
| 型號(hào)： | AD7846AQ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | LC2MOS 16-Bit Voltage Output DAC |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 7 us SETTLING TIME, 16-BIT DAC, CDIP28 |
| 封裝： | CERAMIC, DIP-28 |
| 文件頁(yè)數(shù)： | 10/16頁(yè) |
| 文件大小： | 615K |
| 代理商： | AD7846AQ |
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REV. E
–10–
AD7846
AD7846
DAC1
R
IN
V
OUT
DGND
DB0
V
REF+
V
REF
–
DB15
–
15V
AD588
V
H
D
D
INH
INH
V
L
AD7846
DAC2
R
IN
V
OUT
DGND
DB0
V
REF+
V
REF
–
DB15
AD7846
DAC3
R
IN
V
OUT
DGND
DB0
V
REF+
V
REF
–
DB15
AD7846
DAC4
R
IN
V
OUT
DGND
DB0
V
REF+
V
REF
–
DB15
COMPARE DATA
AND DON'T
CARE DATA
PERIOD
GENERATION
AND DELAY
DUT
FORMATTER
AD345
COMPARE
REGISTER
AD9687
DC PARAMETRICS
+15V
R1
STORED DATA
AND INHIBIT
PATTERN
Figure 21. Digital Test System with 16-Bit Performance
TEST APPLICATION
Figure 21 shows the AD7846 in an Automatic Test Equipment
application. The readback feature of the AD7846 is very useful
in these systems. It allows the designer to eliminate phantom
memory used for storing DAC contents and increases system
reliability since the phantom memory is now effectively on chip
with the DAC. The readback feature is used in the following
manner to control a data transfer. First, write the desired 16-bit
word to the DAC input latch using the
CS
and R/
W
inputs.
Verify that correct data has been received by reading back the
latch contents. Now, the data transfer can be completed by
bringing the asynchronous
LDAC
control line low. The analog
equivalent of the digital word now appears at the DAC output.
In Figure 21, each pin on the Device Under Test can be an
input or output. The AD345 is the pin driver for the digital
inputs, and the AD9687 is the receiver for the digital outputs.
The digital control circuitry determines the signal timing and
format.
DACs 1 and 2 set the pin driver voltage levels (V
H
and V
L
), and
DACs 3 and 4 set the receiver voltage levels. The pin drivers
used in ATE systems normally have a nonlinearity between
input and output. The 16-bit resolution of the AD7846 allows
compensation for these input/output nonlinearities. The dc
parametrics shown in Figure 21 measure the voltage at the
device pin and feed this back to the system processor. The pin
voltage can thus be fine-tuned by incrementing or decrementing
DACs 1 and 2 under system processor control.
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| AD7846BP | 功能描述:IC DAC 16BIT LC2MOS VOUT 28PLCC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 設(shè)置時(shí)間:1µs 位數(shù):8 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:8 電壓電源:雙 ± 功率耗散（最大）:941mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC W 包裝:帶卷 (TR) 輸出數(shù)目和類型:8 電壓，單極 采樣率（每秒）:* |
| AD7846BPZ | 功能描述:IC DAC 16BIT LC2MOS VOUT 28PLCC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| AD7846BQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Digital-to-Analog Converter |
| AD7846JN | 功能描述:IC DAC 16BIT LC2MOS VOUT 28-DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 設(shè)置時(shí)間:1µs 位數(shù):8 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:8 電壓電源:雙 ± 功率耗散（最大）:941mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC W 包裝:帶卷 (TR) 輸出數(shù)目和類型:8 電壓，單極 采樣率（每秒）:* |
| AD7846JNZ | 功能描述:IC DAC 16BIT LC2MOS VOUT 28-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
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