Rainbow Electronics MAX1383 - Manual (Page 3)

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
Track-and-Hold Acquisition Time t ACQ 125 ns
Aperture Delay 2 ns
Aperture-Delay Matching 2 ns
Aperture Jitter (Note 5) 30 ps
External Clock Frequency f SCLK 20 MHz
ANALOG INPUTS (AIN1A, AIN1B, AIN2A, AIN2B)
Input Range U/B = 0, V
AIN_A - RGND 0 V REF V
Differential Input Range U/B = 1, V
AIN_A - V AIN_B -V REF /2 +V REF /2 V
Absolute Voltage Range 0 AVDD V
DC Leakage Current ±1 µA
Input Impedance 34 k Ω
Input Capacitance At each analog input 16 pF
EXTERNAL REFERENCE (REFSEL = 1)
Absolute Input Voltage Range V REF 1.0
AVDD
+ 0.05
V
Input Capacitance 50 pF
DC Leakage Current ±1 µA
Input Current Time averaged at maximum throughput rate 800 µA
INTERNAL REFERENCE (REFSEL = 0)
Reference Voltage Level 2.028 2.048 2.068 V
I SOURCE = 0 to 1mA 1
Load Regulation
I SINK = 0 to 50µA 1
mV/mA
Voltage Temperature Coefficient ±50.0 ppm/ o C
DIGITAL INPUTS (SCLK, CNVST,
U/B, S/D, SEL, REFSEL)
Input-Voltage Low V IL
0.3 x
V L
V
Input-Voltage High V
IH
0.7 x
V L
V
Input Leakage Current I IL ±10 µA
DIGITAL OUTPUT (DOUT1, DOUT2)
Output Load Capacitance C DOUT For stated timing performance 30 pF
Output-Voltage Low V OL I SINK = 5mA 0.4 V
Output-Voltage High V OH I SOURCE = 1mA, V L
≥ 2.7V
V L
- 0.5V
V
Output Leakage Current I OL High-impedance mode (Figure 9) ±0.2 µA
POWER REQUIREMENTS
Analog Supply Voltage AVDD 2.7 3.0 3.6 V
Digital Supply Voltage V L 1.8 AVDD V