Datasheet

MAX11646/MAX11647
Low-Power, 1-/2-Channel, I
2
C, 10-Bit ADCs
in Ultra-Tiny 1.9mm x 2.2mm Package
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 2.7V to 3.6V (MAX11647), V
DD
= 4.5V to 5.5V (MAX11646), V
REF
= 2.048V (MAX11647), V
REF
= 4.096V (MAX11646),
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.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Internal Clock Frequency 2.8 MHz
External clock, fast mode 60
Aperture Delay (Note 6) t
AD
External clock, high-speed mode 30
ns
ANALOG INPUT (AIN0/AIN1)
Unipolar 0 V
REFInput Voltage Range, Single-
Ended and Differential (Note 7)
Bipolar 0 ±V
REF
/2
V
Input Multiplexer Leakage
Current
On/off-leakage current, V
AIN_
= 0V or V
DD
±0.01 ±1 μA
Input Capacitance C
IN
22 pF
INTERNAL REFERENCE (Note 8)
MAX11647 1.968 2.048 2.128
Reference Voltage V
REF
T
A
= +25°C
MAX11646 3.939 4.096 4.256
V
Reference-Voltage Temperature
Coefficient
T
CVREF
25 ppm/°C
REF Short-Circuit Current 2 mA
REF Source Impedance 1.5 k
EXTERNAL REFERENCE
REF Input Voltage Range V
REF
(Note 9) 1 V
DD
V
REF Input Current I
REF
f
SAMPLE
= 94.4ksps 40 μA
DIGITAL INPUTS/OUTPUTS (SCL, SDA)
Input High Voltage V
IH
0.7
x
V
DD
V
Input Low Voltage V
IL
0.3
x
V
DD
V
Input Hysteresis V
HYST
0.1
x
V
DD
V
Input Current I
IN
V
IN
= 0V to V
DD
±10 μA
Input Capacitance C
IN
15 pF
Output Low Voltage V
OL
I
SINK
= 3mA 0.4 V
POWER REQUIREMENTS
MAX11647 2.7 3.6
Supply Voltage V
DD
MAX11646 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
Supply Current I
DD
Shutdown (internal reference off) 0.5 10
μA