AD7868BNZ データシートの表示（PDF） - Analog Devices
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AD7868BNZ Datasheet PDF : 16 Pages
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AD7868
DAC SECTION (VDD = +5 V ؎ 5%, VSS = –5 V ؎ 5%, AGND = DGND = 0 V, RI DAC = +3 V and decoupled as shown in Figure 2, VOUT
Load to AGND; RL = 2 kΩ, CL = 100 pF. All specifications TMIN to TMAX unless otherwise noted.)
Parameter
DYNAMIC PERFORMANCE2
Signal-to-Noise Ratio3 (SNR) @ +25°C
TMIN to TMAX
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
DC ACCURACY
Resolution
Integral Nonlinearity
Integral Nonlinearity
Differential Nonlinearity
Bipolar Zero Error
Positive Full-Scale Error5
Negative Full-Scale Error5
REFERENCE OUTPUT6
RO ADC @ +25°C
RO ADC TC
RO ADC TC
Reference Load Change (∆RO DAC vs. ∆I)
REFERENCE INPUT
RI DAC Input Range
Input Current
LOGIC INPUTS (LDAC, TFS, TCLK, DT)
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN7
ANALOG INPUT
Output Voltage Range
dc Output Impedance
Short-Circuit Current
AC CHARACTERISTICS7
Voltage Output Settling-Time
Positive Full-Scale Change
Negative Full-Scale Change
Digital-to-Analog Glitch Impulse
Digital Feedthrough
VIN to VOUT Isolation
POWER REQUIREMENTS
A
B
T
Version1 Version1 Version1 Units
Test Conditions/Comments
70
72
70
70
71
70
–78
–78
–76
–78
–78
–76
12
12
12
± 1/2
± 1/2
± 1/2
±1
±1
± 0.9
± 0.9
± 0.9
±5
±5
±5
±5
±5
±5
±5
±5
±5
dB min
dB min
dB max
dB max
Bits
LSB typ
LSB max
LSB max
LSB max
LSB max
LSB max
VOUT = 1 kHz Sine Wave, fSAMPLE = 83 kHz
Typically 71.5 dB at +25°C for 0 < VOUT < 20 kHz4
VOUT = 1 kHz Sine Wave, fSAMPLE = 83 kHz
Typically –84 dB at +25°C for 0 < VOUT < 20 kHz4
VOUT = 1 kHz Sine Wave, fSAMPLE = 83 kHz
Typically –84 dB at +25°C for 0 < VOUT < 20 kHz4
Guaranteed Monotonic
2.99/3.01 2.99/3.01 2.99/3.01
± 25
± 25
± 25
± 40
± 50
–1.5
–1.5
–1.5
V min/V max
ppm/°C typ
ppm/°C max
mV max
Reference Load Current Change (0–500 µA)
2.85/3.15 2.85/3.15 2.85/3.15 V min/V max 3 V ± 5%
1
1
1
µA max
2.4
2.4
2.4
0.8
0.8
0.8
± 10
± 10
± 10
10
10
10
V min
V max
µA max
pF max
VDD = 5 V ± 5%
VDD = 5 V ± 5%
VIN = 0 V to VDD
±3
±3
±3
0.3
0.3
0.3
20
20
20
V nom
Ω typ
mA typ
3
3
3
3
3
3
10
10
10
2
2
2
100
100
100
As per ADC Section
µs max
µs max
nV secs typ
nV secs typ
dB typ
Settling Time to Within ± 1/2 LSB of Final Value
Typically 2 µs
Typically 2.5 µs
DAC Code Change All 1s to All 0s
VIN = ± 3 V, 41.5 kHz Sine Wave
NOTES
1Temperature ranges are as follows: A/B Versions, –40°C to +85°C; T Version, –55°C to +125°C.
2VOUT (pk–pk) = ± 3 V.
3SNR calculation includes distortion and noise components.
4Using external sample and hold.
5Measured with respect to RI DAC 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.
Model
Specifications subject to change without notice.
AD7868AN
AD7868AQ
AD7868BN
AD7868BQ
AD7868AR
AD7868BR
ORDERING GUIDE
Temperature
Range
SNR
Relative
Accuracy
(LSB)
–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
70 dB
70 dB
72 dB
72 dB
70 dB
72 dB
± 1/2 typ
± 1/2 typ
± 1 max
± 1 max
± 1/2 typ
± 1 max
Package
Option*
N-24
Q-24
N-24
Q-24
R-28
R-28
*N = Plastic DIP; Q = Cerdip; R = SOIC (Small Outline IC).
REV. B
–3–
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