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AD7769 Datasheet(PDF) 2 Page - Analog Devices

No. de pieza AD7769
Descripción Electrónicos  Analog I/O Port
Download  16 Pages
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

AD7769 Datasheet(HTML) 2 Page - Analog Devices

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REV. A
–2–
AD7769–SPECIFICATIONS
ADC SPECIFICATIONS
Parameter
J Version
A Version Units
Conditions/Comments
DC ACCURACY
Resolution
8
*
Bits
Relative Accuracy
±1
*
LSB max
See Terminology
Differential Nonlinearity
±1
*
LSB max
No Missing Codes. See Terminology.
Bias Offset Error
See Terminology
+25
°C
±2.5
*
LSB max
TMIN to TMAX
±3.0
*
LSB max
Bias Offset Match
Channel A to Channel B
+25
°C
±2.5
*
LSB max
TMIN to TMAX
±3.5
*
LSB max
Plus or Minus Full-Scale Error
See Terminology
+25
°C
±2.0
*
LSB max
TMIN to TMAX
±2.5
*
LSB max
Plus or Minus Full-Scale Match
Channel A to Channel B
+25
°C
±3.5
*
LSB max
TMIN to TMAX
±4
*
LSB max
ADC TO DAC MATCHING
Channel A/B to VOUT A/B
Bias Offset Match
VBIAS (DAC) = +5 V, VSWING (DAC) = +2.5 V.
+25
°C
±2.5
*
LSB max
TMIN to TMAX
±3.5
*
LSB max
Plus or Minus Full-Scale Match
+25
°C
±3.5
*
LSB max
TMIN to TMAX
±4.0
*
LSB max
DYNAMIC PERFORMANCE
2
Signal-to-Noise Ratio (SNR)
44
*
dB min
VIN = 100 kHz Full-Scale Sine Wave with fSAMPLING = 400 kHz
Total Harmonic Distortion (THD) 48
*
dB max
VIN = 100 kHz Full-Scale Sine Wave with fSAMPLlNG = 400 kHz
Intermodulation Distortion (IMD) 60
*
dB typ
fa = 99 kHz, fb = 96.7 kHz with fSAMPLING = 400 kHz
Frequency Response
0.1
*
dB typ
VIN = Full-Scale, dc to 200 kHz Sine Wave
ANALOG INPUTS
Input Voltage Ranges, VINA, VINBVBIAS – VSWING or 0
V min
Whichever Is the Higher
VBIAS + VSWING or 9.8
V max
Whichever Is the Lower
Input Currents, IINA, IINB
±0.4
*
mA max
ADC REFERENCE INPUTS
Input Voltage Levels
VBIAS (ADC)
2/6.8
*
V min/max
With Respect to AGND (ADC). For Specified Performance.
VSWING (ADC)
2.0/3.0
*
V min/max
With Respect to AGND (ADC). For Specified Performance.
Input Currents
VBIAS (ADC) Input
±800
*
µA max
VSWING (ADC) Input
±1*
µA max
LOGIC OUTPUTS
DB0–DB7,
INT
VOL, Output Low Voltage
0.4
*
V max
ISINK = 1.6 mA
VOH, Output High Voltage
4.0
*
V min
ISOURCE = 200 µA
DB0–DB7
Floating State Leakage Current
±10
*
µA max
Floating State Capacitance
2
10
*
pF max
Output Coding
Offset Binary
POWER REQUIREMENTS
VCC Range
4.75/5.25
*
V min/V max
For Specified Performance. The Part Will Function with
VCC =5 V ± 10% with Degraded Performance.
VDD Range
10.8/13.2
*
V min/V max
For Specified Performance
IDD @ +25°C
20
*
mA max
For ADC and DAC: VBIAS = 5.0 V; VSWING = 3.0 V; VINA,
VUBAm VINB = TMIN to TMAX
22
*
mA max
VBIAS; DAC Code = FF (Hex); DACA and DACB Load = 5 kΩ
to AGND (DAC). Typically IDD = 14 mA.
ICC @ +25°C
5
*
mA max
Logic Inputs = 2.4 V, CLK Input = 0.8 V. Typically ICC = 1.5 mA.
TMIN to TMAX
6
*
mA max
NOTES
1 Temperature range as follows: J Version: 0
°C to +70°C; A Version: –40°C to +85°C.
2 Sample tested at +25
°C to ensure compliance.
*Specification same as J Version.
Specifications subject to change without notice.
(VDD = +12 V
10%; VCC = +5 V
5%; AGND [ADC] = AGND [DAC] = DGND = 0 V; VBIAS [ADC] = +5 V;
VSWING [ADC] = +2.5 V; fCLK = 5 MHz external. All specifications TMIN to TMAX
1 unless otherwise noted.)


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