Datasheet

–2–
AD9280–SPECIFICATIONS
(AVDD = +3 V, DRVDD = +3 V, F
S
= 32 MHz (50% Duty Cycle), MODE = AVDD, 2 V Input
Span from 0.5 V to 2.5 V, External Reference, T
MIN
to T
MAX
unless otherwise noted)
Parameter Symbol Min Typ Max Units Condition
RESOLUTION 8 Bits
CONVERSION RATE F
S
32 MHz
DC ACCURACY
Differential Nonlinearity DNL ±0.2 ±1.0 LSB REFTS = 2.5 V, REFBS = 0.5 V
Integral Nonlinearity INL ±0.3 ±1.5 LSB
Offset Error E
ZS
±0.2 ±1.8 % FSR
Gain Error E
FS
±1.2 ±3.9 % FSR
REFERENCE VOLTAGES
Top Reference Voltage REFTS 1 AVDD V
Bottom Reference Voltage REFBS GND AVDD – 1 V
Differential Reference Voltage 2 V p-p
Reference Input Resistance
1
10 kΩ REFTS, REFBS: MODE = AVDD
4.2 kΩ Between REFTF & REFBF: MODE = AVSS
ANALOG INPUT
Input Voltage Range AIN REFBS REFTS V REFBS Min = GND: REFTS Max = AVDD
Input Capacitance C
IN
1 pF Switched
Aperture Delay t
AP
4ns
Aperture Uncertainty (Jitter) t
AJ
2ps
Input Bandwidth (–3 dB) BW
Full Power (0 dB) 300 MHz
DC Leakage Current 43 µA Input = ±FS
INTERNAL REFERENCE
Output Voltage (1 V Mode) VREF 1 V REFSENSE = VREF
Output Voltage Tolerance (1 V Mode) ±10 ±25 mV
Output Voltage (2 V Mode) VREF 2 V REFSENSE = GND
Load Regulation (1 V Mode) 0.5 2 mV 1 mA Load Current
POWER SUPPLY
Operating Voltage AVDD 2.7 3 5.5 V
DRVDD 2.7 3 5.5 V
Supply Current IAVDD 31.7 36.7 mA AVDD = 3 V, MODE = AVSS
Power Consumption P
D
95 110 mW AVDD = DRVDD = 3 V, MODE = AVSS
Power-Down 4 mW STBY = AVDD, MODE and CLOCK
= AVSS
Gain Error Power Supply Rejection PSRR 1 % FS
DYNAMIC PERFORMANCE (AIN = 0.5 dBFS)
Signal-to-Noise and Distortion SINAD
f = 3.58 MHz 46.4 49 dB
f = 16 MHz 48 dB
Effective Bits
f = 3.58 MHz 7.8 Bits
f = 16 MHz 7.7 Bits
Signal-to-Noise SNR
f = 3.58 MHz 47.8 49 dB
f = 16 MHz 48 dB
Total Harmonic Distortion THD
f = 3.58 MHz –62 –49.5 dB
f = 16 MHz –58 dB
Spurious Free Dynamic Range SFDR
f = 3.58 MHz 66 51.4 dB
f = 16 MHz 61 dB
Differential Phase DP 0.2 Degree NTSC 40 IRE Mod Ramp
Differential Gain DG 0.08 %
REV. E