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參數(shù)資料
| 型號(hào)： | AD7244JR |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 14BIT LC2MOS DUAL 28SOIC |
| 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： | 4µs |
| 位數(shù)： | 14 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 電壓電源： | 雙 ± |
| 功率耗散（最大）： | 195mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SOIC W |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 2 電壓，雙極 |
| 采樣率（每秒）： | 250k |
REV. A
–2–
AD7242/AD7244–SPECIFICATIONS
(VDD = +5 V
5% VSS = –5 V
5%, AGND = DGND = 0 V, REF INA =
REF INB = +3 V. VOUTA, VOUTB load to AGND: RL = 2 k , CL = 100 pF.
All Specifications TMIN to TMAX unless otherwise noted.)
AD7242
Parameter
J, A Versions
1
K, B Versions
1
Units
Test Conditions/Comments
DC ACCURACY
Resolution
12
Bits
Integral Nonlinearity
±1
±1/2
LSB max
Differential Nonlinearity
±1
LSB max
Guaranteed Monotonic
Bipolar Zero Error
±5
LSB max
Positive Full-Scale Error
2
±5
LSB max
Negative Full-Scale Error
2
±5
LSB max
REFERENCE OUTPUT
3
REF OUT @ +25
°C
2.99/3.01
V min/V max
TMIN to TMAX
2.98/3.02
V min/V max
REF OUT Tempco
35
ppm/
°C typ
Reference Load Change
(
REF OUT vs. I)
–1
mV max
Reference Load Current Change (0
A–500 A)
REFERENCE INPUTS
REF INA, REF INB Input Range
2.85/3.15
V min/V max
3 V
± 5%
Input Current
1
A max
LOGIC INPUTS
(LDACA, LDACB, TFSA, TFSB,
TCLKA, TCLKB, DTA, DTB)
Input High Voltage, VINH
2.4
V min
VDD = 5 V ± 5%
Input Low Voltage, VINL
0.8
V max
VDD = 5 V ± 5%
Input Current, IIN
±10
A max
VIN = 0 V to VDD
Input Capacitance, CIN
4
10
pF max
ANALOG OUTPUTS
(VOUTA, VOUTB)
Output Voltage Range
±3
V nom
DC Output Impedance
0.1
typ
Short Circuit Current
20
mA typ
AC CHARACTERISTICS
4
Voltage Output Settling Time
Settling Time to Within
±1/2 LSB of Final Value
Positive Full-Scale Change
3
s max
Typically 2
s
Negative Full-Scale Change
3
s max
Typically 2
s
Digital-to-Analog Glitch Impulse
10
nV secs typ
DAC Code Change All 1s to All 0s
Digital Feedthrough
2
nV secs typ
Channel-to-Channel Isolation
110
dB typ
VOUT = 10 kHz Sine Wave
POWER REQUIREMENTS
VDD
+5
V nom
±5% for Specified Performance
VSS
–5
V nom
±5% for Specified Performance
IDD
27
mA max
Cumulative Current from the Two VDD Pins
ISS
15
mA max
Cumulative Current from the Two VSS Pins
Total Power Dissipation
195
mW max
Typically 130 mW
NOTES
1Temperature ranges are as follows: J, K Versions: –40
°C to +85°C; A, B Versions: –40°C to +85°C.
2Measured with respect to REF IN and includes bipolar offset error.
3For capacitive loads greater than 50 pF, a series resistor is required (see Internal Reference section).
4Sample tested @ +25
°C to ensure compliance.
Specifications subject to change without notice.
AD7242 ORDERING GUIDE
Temperature
Integral
Package
Model
Range
Nonlinearity
Option*
AD7242JN
–40
°C to +85°C
±1 LSB max
N-24
AD7242KN
–40
°C to +85°C
±1/2 LSB max
N-24
AD7242JR
–40
°C to +85°C
±1 LSB max
R-28
AD7242KR
–40
°C to +85°C
±1/2 LSB max
R-28
AD7242AQ
–40
°C to +85°C
±1 LSB max
Q-24
AD7242BQ
–40
°C to +85°C
±1/2 LSB max
Q-24
*N = Plastic DIP; Q = Cerdip; R = Small Outline IC (SOIC).
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