參數(shù)資料
型號(hào): AD9732
廠商: Analog Devices, Inc.
英文描述: 10-Bit, 200 MSPS D/A Converter
中文描述: 10位,200 MSPS的D / A轉(zhuǎn)換
文件頁(yè)數(shù): 4/11頁(yè)
文件大小: 144K
代理商: AD9732
AD9732
–4–
REV. A
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD9732 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
ABSOLUTE MAXIMUM RATINGS*
Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+V
S
+V
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6 V
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . –0.7 V to +V
S
Analog Output Current . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Control Amplifier Input Voltage Range . . . . . . . . . 0 V to +V
S
Reference Input Voltage Range . . . . . . . . . . . . . . . 0 V to +V
S
Internal Reference Output Current . . . . . . . . . . . . . . . 500
μ
A
Control Amplifier Output Current . . . . . . . . . . . . . .
±
2.5 mA
Operating Temperature . . . . . . . . . . . . . . . . . –40
°
C to +85
°
C
Storage Temperature . . . . . . . . . . . . . . . . . . –65
°
C to +150
°
C
Maximum Junction Temperature . . . . . . . . . . . . . . . +175
°
C
Lead Temperature (10 sec) Soldering . . . . . . . . . . . . +300
°
C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions outside of those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum ratings
for extended periods may affect device reliability.
PIN FUNCTION DESCRIPTIONS
Pin Number
Name
Function
1
2–9
10
11
12, 13
14, 15, 28
16, 22, 27
18
17
D9 (MSB)
D8–D1
D0 (LSB)
CLOCK
NC
DIGITAL +V
S
GND
ANALOG +V
S
R
SET
Most significant data bit of digital input word.
Eight bits of 10-bit digital input word.
Least significant data bit of digital input word.
TTL-compatible edge-triggered latch enable signal for on-board registers.
No internal connection to this pin. Recommend tie to ground.
+5 V supply voltage for digital circuitry.
Converter Ground.
+5 V supply voltage for analog circuitry.
Connection for external reference set resistor; nominal 1.96 k
. Full-scale output
current = 32 [Control Amp + V
S
] (Reset).
Analog Return. This point and the reference side of the DAC load resistors should be
connected to the same potential (Analog +V
S
).
Analog current output; full-scale current occurs with a digital word input of all “1s”
with external load resistor, output voltage = I
OUT
(R
LOAD
i
R
INTERNAL
). R
INTERNAL
is
nominally 240
.
Complementary analog current output; full-scale current occurs with a digital word
input of all “0s.”
Normally connected to CONTROL AMP OUT (Pin 24). Direct line to DAC current
source network. Voltage changes (noise) at this point have a direct effect on the full-
scale output current of the DAC. Full-scale current output = 32 (CONTROL AMP IN/
R
SET
) when using internal amplifier. DAC load is virtual ground.
Normally connected to REF IN (Pin 23). Output of internal control amplifier, which
provides a reference for the current switch network.
Normally connected to CONTROL AMP IN (Pin 26). Internal voltage reference,
nominally 3.75 V.
Normally connected to REF OUT (Pin 25) if not connected to external reference.
19
ANALOG RETURN
20
I
OUT
21
I
OUTB
23
REF IN
24
CONTROL AMP OUT
25
REF OUT
26
CONTROL AMP IN
PIN CONFIGURATION
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
AD9732
NC = NO CONNECT
DIGITAL +V
S
NC
NC
CLOCK
D0 (LSB)
D1
D2
D9 (MSB)
D8
D7
D6
D3
D4
D5
DIGITAL +V
S
GND
R
SET
ANALOG +V
S
ANALOG RETURN
I
OUT
I
OUTB
DIGITAL +V
S
GND
CONTROL AMP IN
REF OUT
GND
REF IN
CONTROL AMP OUT
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