AD7878SE/883B View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
AD7878SE/883B Datasheet PDF : 16 Pages
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AD7878–SPECIFICATIONS (VDD = +5 V ؎ 5%, VCC = +5 V ؎ 5%, VSS = –5 V ؎ 5%, AGND = DGND =
0 V, fCLK = 8 MHz. All Specifications TMIN to TMAX, unless otherwise noted.)
Parameter
J, A
K, L, B S
Versions1 Versions Version Units
Test Conditions/Comments
DYNAMIC PERFORMANCE2
Signal-to-Noise Ratio (SNR)3 @ 25°C 70
TMIN to TMAX
70
Total Harmonic Distortion (THD)
–80
Peak Harmonic or Spurious Noise
–80
Intermodulation Distortion (IMD)
Second Order Terms
–80
Third Order Terms
–80
Track/Hold Acquisition Time
2
72
70
dB min
71
70
dB min
–80
–78
dB max
–80
–78
dB max
–80
–78
dB max
–80
–78
dB max
2
2
µs max
VIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz
Typically 71.5 dB for 0 < VIN < 50 kHz
VIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz
Typically –86 dB for 0 < VIN < 50 kHz
VIN = 10 kHz, fSAMPLE = 100 kHz
Typically –86 dB for 0 < VIN < 50 kHz
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz
See Throughput Rate Section
DC ACCURACY
Resolution
12
Minimum Resolution for Which
No Missing Codes are Guaranteed 12
Relative Accuracy
± 1/2
Differential Nonlinearity
± 1/2
Bipolar Zero Error
±6
Positive Full-Scale Error4
±6
Negative Full-Scale Error4
±6
12
12
Bits
12
12
Bits
± 1/4
± 1/2
LSB typ
± 1/2
± 1/2
LSB typ
±6
±6
LSB max
±6
±6
LSB max
±6
±6
LSB max
ANALOG INPUT
Input Voltage Range
Input Current
REFERENCE OUTPUT5
REF OUT
REF OUT Error @ 25°C
TMIN to TMAX
Reference Load Sensitivity
(∆REF OUT/∆I)
±3
± 550
3
± 10
± 15
±1
±3
± 550
3
± 10
± 15
±1
±3
± 550
3
± 10
± 15
±1
Volts
µA max
V nom
mV max
mV max
mV max
Reference Load Current Change (0 µA–500 µA).
Reference Load Should Not Be Changed
During Conversion
LOGIC INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN6
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
DB11–DB0
Floating State Leakage Current
Floating State Output Capacitance6
+2.4
+0.8
± 10
10
+2.7
+0.4
± 10
15
+2.4
+2.4
V min
+0.8
+0.8
V max
± 10
± 10
µA max
10
10
pF max
+2.7
+2.7
V min
+0.4
+0.4
V max
± 10
± 10
± 10
15
15
15
VCC = +5 V ± 5%
VCC = +5 V ± 5%
VIN = 0 to VCC
ISOURCE 40 µA
ISINK = 1.6 mA
µA max
pF max
CONVERSION TIME
7/7.125
7/9.250
7/7.125 7/7.125 µs min/µs max
7/9.250 7/9.250 µs min/µs max
Assuming No External Read/Write Operations
Assuming 17 External Read/Write Operations
See Internal Comparator Timing Section
POWER REQUIREMENTS
VDD
VCC
VSS
IDD
ICC
ISS
Power Dissipation
+5
+5
+5
V nom
+5
+5
+5
V nom
–5
–5
–5
V nom
13
13
13
mA max
100
100
100
µA max
6
6
6
mA max
95.5
95.5
95.5
mW max
± 5% for Specified Performance
± 5% for Specified Performance
± 5% for Specified Performance
CS = DMWR = DMRD = 5 V
CS = DMWR = DMRD = 5 V
CS = DMWR = DMRD = 5 V
Typically 60 mW
NOTES
1Temperature range as follows: J, K, L versions: 0°C to +70°C; A, B versions: –25°C to +85°C; S version: –55°C to +125°C.
2VIN = ± 3 V. See Dynamic Specifications section.
3SNR calculation includes distortion and noise components.
4Measured with respect to the Internal Reference.
5For capacitive loads greater than 50 pF a series resistor is required (see Internal Reference section).
6Sample tested @ +25°C to ensure compliance.
Specifications subject to change without notice.
–2–
REV. A
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