Datasheet

V
DD
to DGND . ........................................................ -0.3V to +6V
V
SS
to DGND ........................................................+0.3V to -17V
AIN to AGND .......................................................................±15V
AGND to DGND .................................................................±0.3V
Digital Inputs to DGNO ............................. -0.3V to (V
DD
+ 0.3V)
(CS, CONVST, MODE, CLKIN, INVCLK, INVFRM)
Digital Outputs to DGND ......................... +0.3V to (V
DD
+ 0.3V)
(SFRM, FSTRT, SCLK, SDATA)
Continuous Power Dissipation (T
A
= +70°C)
16-Pin PDIP (derate 10.53mW/°C above +70°C) .........842mW
16-Pin Wide SO (derate 9.52mW/°C above +70°C) .....762mW
20-Pin SSOP (derate 8.00mW/°C above +70°C)..........640mW
Operating Temperature Ranges
MAX121C_ ..........................................................0°C to +70°C
MAX121E_ ...................................................... -40°C to +85°C
Storage Temperature Range ........................... -65°C to + 160°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) ....................................... +260°C
(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
DYNAMIC PERFORMANCE (f
S
= 308kHz, V
AIN
= 10V
P-P
, 50kHz)
Signal-to-Noise Ratio SINAD Including distortion
MAX121C 75 78
dB
MAX121E 73 77
Total Harmonic Distortion THD First ve harmonics -85 -77 dB
Spurious-Free Dynamic Range SFDR 77 86 dB
ACCURACY
Resolution RES 14 Bits
Differential Nonlinearity (Note 1) DNL
12 bits no missing codes over temperature
range
±1.5 LSB
Integral Nonlinearity INL ±2 LSB
Bipolar Zero Error
Code 00..00 to 00..01 transition,
near V
AIN
= 0V
±10 mV
Temperature drift ±1 ppm/°C
Full-Scale Error (Notes 1, 2)
Including reference; adjusted for bipolar
zero error; T
A
= +25°C
±0.2 %
Full-Scale Temperature Drift Excluding reference ±1 ppm/°C
Power-Supply Rejection
V
DD
only, 5V ±5%
±1/2 ±2
LSB
V
SS
only, -12V ±10%
±1 ±2
V
SS
only, -15V ±5%
±1 ±2
ANALOG INPUT
Input Range -5 +5 V
Input Current V
AIN
= 5V (R
IN
approximately 6kW to REF) 2.5 mA
Input Capacitance (Note 3) 10 pF
Full-Power Bandwidth 1.5 MHz
MAX121 308ksps ADC with DSP Interface and 78dB SINAD
www.maximintegrated.com
Maxim Integrated │ 2
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics