Rainbow Electronics MAX1383 - Manual (Page 4)

MAX1377/MAX1379/MAX1383
Dual, 12-Bit, 1.25Msps Simultaneous-Sampling
ADCs with Serial Interface
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ELECTRICAL CHARACTERISTICS—MAX1377 (continued)
(V AVDD = 2.7V to 3.6V, V L = 1.8V to AVDD, f SCLK = 20MHz (50% duty cycle), V REF = 2.048V, REFSEL = V L , S/ D = DGND, C
REF =
1µF; T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Normal operation 13 15
Partial power-down mode (Note 5) 2
mA
Analog Supply Current I AVDD
Full power-down mode (Note 5) 1 5 µA
Average Static Supply Current 8 10 mA
Digital Supply Current I VL f SCLK = 20MHz, V L = 3V, C L = 30pF 1 1.5 mA
Power-Supply Rejection PSR V AVDD = 3V ±10%, full-scale input ±0.2 ±3 mV
ELECTRICAL CHARACTERISTICS—MAX1379
(V AVDD = 4.75V to 5.25V, V L = 3V, f SCLK = 20MHz (50% duty cycle), V REF = 4.096V, REFSEL = V L , S/ D = DGND, C
REF = 1µF; T A =
T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC ACCURACY
Resolution 12 Bits
Relative Accuracy INL (Note 1) -1.25 +1.25 LSB
Differential Nonlinearity DNL -1 +1 LSB
Offset Error ±8 LSB
Offset-Error Matching ±9 LSB
Gain Error (Note 2) ±6 LSB
Gain-Error Matching (Note 2) ±9 LSB
Gain Temperature Coefficient ±2 ppm/ o C
AIN1A to AIN1B, AIN2A to AIN2B 80
DC Input Isolation
AIN1A to AIN2A, AIN1B to AIN2B 80
dB
DYNAMIC SPECIFICATIONS (f IN = 500kHz , 4V P-P sine wave, 1.25Msps, 20MHz f SCLK )
Unipolar 69 70
Signal-to-Noise Plus Distortion SINAD
Bipolar 70 71
dB
Unipolar 70 71
Signal-to-Noise Ratio SNR
Bipolar 70 72
dB
Total Harmonic Distortion THD Up to the 5th harmonic -84 -76 dB
Spurious-Free Dynamic Range SFDR -84 -76 dB
Intermodulation Distortion IMD f IN1 = 103.5kHz, f IN2 = 113.5kHz -78 dB
Full-Power Bandwidth -3dB point 5 MHz
Full-Linear Bandwidth (S/N + D) > 68dB, 1V input 1 MHz
CONVERSION RATE (Figure 6)
Minimum Conversion Time t CONV 16 clock cycles per conversion (Note 3) 0.8 µs
Dual-output mode, S/ D = 0 1.25
Maximum Throughput Rate
Single-output mode, S/ D = 1 0.625
Msps
Minimum Throughput Rate for
Full Bandwidth Signal
(Note 4) 10 ksps