Datasheet

(V
DD
= 4.75V to 5.25V, V
SS
= -10.8V to -15.75V, f
CLK
= 5.5MHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
REFERENCE
Output Voltage No external load, V
AIN
= 5V, T
A
= +25°C -5.02 -4.98 V
External Load Regulation 0mA < I
SINK
< 5mA, V
AIN
= 0V 5 mV
Temperature Drift (Note 4) ±30 ppm/°C
CONVERSION TIME
Synchronous
t
CONV
16 t
CLK
2.91 µs
Clock Frequency
f
CLK
0.1 5.5 MHz
DIGITAL INPUTS (CLKIN, CONVST, CS)
Input High Voltage V
IH
2.4 V
Input Low Voltage V
IL
0.8 V
Input Capacitance (Note 3) 10 pF
Input Current V
DD
= 0V or V
DD
±5 µA
DIGITAL OUTPUTS (SCLK, SDATA, FSTRT, SFRM)
Output Low Voltage V
OL
I
SINK
= 1.6mA 0.4 V
Output High Voltage V
OH
I
SOURCE
= 1mA V
DD
- 0.5 V
Leakage Current
I
LKG
V
OUT
= 0V or VDD ±5 µA
Output Capacitance (Note 3) 10 pF
POWER REQUIREMENTS
Positive Supply Voltage V
DD
By supply rejection test 4.75 5.25 V
Negative Supply Voltage V
SS
By supply rejection test -10.8 -15.75 V
Positive Supply Current I
DD
V
DD
= 15.25V, V
SS
= -15.75V, V
AIN
= 0V,
V
CS
= V
CONVST
= V
MODE
= 5V
9 15 mA
Negative Supply Current I
SS
V
DD
= 15.25V, V
SS
= -15.75V, V
AIN
= 0V,
V
CS
= V
CONVST
= V
MODE
= 5V
14 20 mA
Power Dissipation
V
DD
= 15.25V, V
SS
= 12V, V
AIN
= 0V,
V
CS
= V
CONVST
= V
MODE
= 5V
213 315 mW
MAX121 308ksps ADC with DSP Interface and 78dB SINAD
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)