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AD7840ARS Datenblatt(PDF) 2 Page - Analog Devices

Teilenummer AD7840ARS
Bauteilbeschribung  LC2MOS Complete 14-Bit DAC
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Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

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REV. B
–2–
AD7840–SPECIFICATIONS
(VDD = +5 V
5%, VSS = –5 V
5%, AGND = DGND = O V, REF IN = +3 V, RL = 2 k ,
CL = 100 pF. All specifications TMIN to TMAX unless othewise noted.)
Parameter
J, A
1
K, B
1
S
1
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
2
Signal to Noise Ratio
3 (SNR)
76
78
76
dB min
VOUT = 1 kHz Sine Wave, fSAMPLE = 100 kHz
Typically 82 dB at +25
°C for 0 < V
OUT < 20 kHz
4
Total Harmonic Distortion (THD) –78
–80
–78
dB max
VOUT = 1 kHz Sine Wave, fSAMPLE = 100 kHz
Typically –84 dB at +25
°C for 0 < V
OUT < 20 kHz
4
Peak Harmonic or Spurious Noise
–78
–80
–78
dB max
VOUT = 1 kHz Sine Wave, fSAMPLE = 100 kHz
Typically –84 dB at +25
°C for 0 < V
OUT < 20 kHz
4
DC ACCURACY
Resolution
14
14
14
Bits
Integral Nonlinearity
±2
±1
±2
LSB max
Differential Nonlinearity
±0.9
±0.9
±0.9
LSB max
Guaranteed Monotonic
Bipolar Zero Error
±10
±10
±10
LSB max
Positive Full Scale Error
5
±10
±10
±10
LSB max
Negative Full Scale Error
5
±10
±10
±10
LSB max
REFERENCE OUTPUT
6
REF OUT @ +25
°C
2.99
2.99
2.99
V min
3.01
3.01
3.01
V max
REF OUT TC
±60
±60
±60
ppm/
°C max
Reference Load Change
(
∆REF OUT vs. ∆I)
–1
–1
–1
mV max
Reference Load Current Change (0–500
µA)
REFERENCE INPUT
Reference Input Range
2.85
2.85
2.85
V min
3 V
± 5%
3.15
3.15
3.15
V max
Input Current
50
50
50
µA max
LOGIC INPUTS
Input High Voltage, VINH
2.4
2.4
2.4
V min
VDD = 5 V ± 5%
Input Low Voltage, VINL
0.8
0.8
0.8
V max
VDD = 5 V
± 5%
Input Current, IIN
±10
±10
±10
µA max
VIN = 0 V to VDD
Input Current (CS Input Only)
±10
±10
±10
µA max
VIN =VSS to VDD
Input Capacitance, CIN
7
10
10
10
pF max
ANALOG OUTPUT
Output Voltage Range
±3
±3
±3
V nom
DC Output Impedance
0.1
0.1
0.1
Ω typ
Short-Circuit Current
20
20
20
mA typ
AC CHARACTERISTICS7
Voltage Output Settling Time
Settling Time to within
±1/2 LSB of Final Value
Positive Full-Scale Change
4
4
4
µs max
Typically 2
µs
Negative Full-Scale Change
4
4
4
µs max
Typically 2.5
µs
Digital-to-Analog Glitch Impulse
10
10
10
nV secs typ
Digital Feedthrough
2
2
2
nV secs typ
POWER REQUIREMENTS
VDD
+5
+5
+5
V nom
±5% for Specified Performance
VSS
–5
–5
–5
V nom
±5% for Specified Performance
IDD
14
14
15
mA max
Output Unloaded, SCLK = +5 V. Typically 10 mA
ISS
6
6
7
mA max
Output Unloaded, SCLK = +5 V. Typically 4 mA
Power Dissipation
100
100
110
mW max
Typically 70 mW
NOTES
1Temperature ranges are as follows: J, K Versions, 0
°C to +70°C; A, B Versions, –25°C to +85°C; S Version, –55°C to +125°C.
2V
OUT (pk-pk) = ± 3 V
3SNR calculation includes distortion and noise components.
4Using external sample-and-hold (see Testing the AD7840).
5Measured with respect to REF IN and includes bipolar offset error.
6For capacitive loads greater than 50 pF, a series resistor is required (see Internal Reference section).
7Sample tested @ +25
°C to ensure compliance.
Specifications subject to change without notice.


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