AD7242(RevB) 查看數據表（PDF） - Analog Devices
零件编号
产品描述 (功能)
生产厂家
AD7242 Datasheet PDF : 12 Pages
| |||
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.)
Parameter
AD7242
J, A Versions1 K, B Versions1 Units
Test Conditions/Comments
DC ACCURACY
Resolution
12
Integral Nonlinearity
±1
Differential Nonlinearity
±1
Bipolar Zero Error
±5
Positive Full-Scale Error2
±5
Negative Full-Scale Error2
±5
12
Bits
± 1/2
LSB max
±1
LSB max
Guaranteed Monotonic
±5
LSB max
±5
LSB max
±5
LSB max
REFERENCE OUTPUT3
REF OUT @ +25°C
2.99/3.01
2.99/3.01
V min/V max
TMIN to TMAX
2.98/3.02
2.98/3.02
V min/V max
REF OUT Tempco
35
35
Reference Load Change
(ΔREF OUT vs. ΔI)
–1
–1
ppm/°C typ
mV max
REFERENCE INPUTS
REF INA, REF INB Input Range
E Input Current
2.85/3.15
1
2.85/3.15
1
V min/V max
μA max
LOGIC INPUTS
(LDACA, LDACB, TFSA, TFSB,
TCLKA, TCLKB, DTA, DTB)
T Input High Voltage, VINH
2.4
2.4
Input Low Voltage, VINL
0.8
0.8
Input Current, IIN
± 10
± 10
Input Capacitance, CIN4
10
10
E ANALOG OUTPUTS
(VOUTA, VOUTB)
Output Voltage Range
±3
±3
L DC Output Impedance
0.1
0.1
Short Circuit Current
20
20
V min
V max
μA max
pF max
V nom
Ω typ
mA typ
AC CHARACTERISTICS4
Voltage Output Settling Time
Positive Full-Scale Change
3
3
O Negative Full-Scale Change
3
3
Digital-to-Analog Glitch Impulse 10
10
Digital Feedthrough
2
2
Channel-to-Channel Isolation
110
110
μs max
μs max
nV secs typ
nV secs typ
dB typ
S POWER REQUIREMENTS
VDD
+5
+5
VSS
–5
–5
IDD
27
27
B ISS
15
15
Total Power Dissipation
195
195
V nom
V nom
mA max
mA max
mW max
NOTES
1Temperature ranges are as follows: J, K Versions: –40°C to +85°C; A, B Versions: –40°C to +85°C.
O 2Measured with respect to REF IN and includes bipolar offset error.
Reference Load Current Change (0 μA–500 μA)
3 V ± 5%
VDD = 5 V ± 5%
VDD = 5 V ± 5%
VIN = 0 V to VDD
Settling Time to Within ± 1/2 LSB of Final Value
Typically 2 μs
Typically 2 μs
DAC Code Change All 1s to All 0s
VOUT = 10 kHz Sine Wave
± 5% for Specified Performance
± 5% for Specified Performance
Cumulative Current from the Two VDD Pins
Cumulative Current from the Two VSS Pins
Typically 130 mW
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
Model
Temperature
Range
Integral
Nonlinearity
Package
Option*
AD7242JN
AD7242KN
AD7242JR
AD7242KR
AD7242AQ
AD7242BQ
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
± 1 LSB max
± 1/2 LSB max
± 1 LSB max
± 1/2 LSB max
± 1 LSB max
± 1/2 LSB max
*N = Plastic DIP; Q = Cerdip; R = Small Outline IC (SOIC).
N-24
N-24
R-28
R-28
Q-24
Q-24
–2–
REV. B
Share Link: 