Rainbow Electronics MAX1139 - Manual (Page 3)

MAX1136–MAX1139
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial 10-Bit ADCs
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ELECTRICAL CHARACTERISTICS (continued)
(V DD = 2.7V to 3.6V (MAX1137/MAX1139), V DD = 4.5V to 5.5V (MAX1136/MAX1138), V REF = 2.048V (MAX1137/MAX1139), V REF =
4.096V (MAX1136/MAX1138), C REF = 0.1µF, f SCL = 1.7MHz, T A = T MIN to T MAX , unless otherwise noted. Typical values are at
T A = +25°C. See Tables 1–5 for programming notation.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Internal Clock Frequency 2.8 MHz
External clock, fast mode 60
Aperture Delay (Note 5) t AD
External clock, high-speed mode 30
ns
ANALOG INPUT (AIN0–AIN11)
Unipolar 0 V REF Input-Voltage Range, Single-
Ended and Differential (Note 6)
Bipolar 0 ±V
REF /2
V
Input Multiplexer Leakage Current ON/OFF leakage current, VAIN_ = 0 or VDD ±0.01 ±1 µA
Input Capacitance CIN 22 pF
INTERNAL REFERENCE (Note 7)
MAX1137/MAX1139 1.968 2.048 2.128
Reference Voltage VREF T A = +25°C
MAX1136/MAX1138 3.939 4.096 4.256
V
Reference-Voltage Temperature
Coefficient
TCVREF 25 ppm/°C
REF Short-Circuit Current 2 mA
REF Source Impedance 1.5 k Ω
EXTERNAL REFERENCE
REF Input-Voltage Range VREF (Note 8) 1 VDD V
REF Input Current IREF f SAMPLE = 94.4ksps 40 µA
DIGITAL INPUTS/OUTPUTS (SCL, SDA)
Input High Voltage V IH 0.7 ✕ V DD V
Input Low Voltage V IL 0.3 ✕ V DD V
Input Hysteresis V HYST 0.1 ✕ V DD V
Input Current I IN V IN 0 to V DD
±10 µA
Input Capacitance C IN 15 pF
Output Low Voltage V OL I SINK = 3mA 0.4 V
POWER REQUIREMENTS
MAX1137/MAX1139 2.7 3.6
Supply Voltage V DD
MAX1136/MAX1138 4.5 5.5
V
Internal reference 900 1150 f SAMPLE = 94.4ksps
external clock External reference 670 900
Internal reference 530 f SAMPLE = 40ksps
internal clock External reference 230
Internal reference 380 f
SAMPLE
= 10ksps
internal clock External reference 60
Internal reference 330 f SAMPLE =1ksps
internal clock External reference 6
µA
Supply Current I DD
Shutdown (internal reference OFF) 0.5 110