Datasheet

MAX9939
SPI Programmable-Gain Amplifier
with Input V
OS
Trim and Output Op Amp
2
Maxim Integrated
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.
V
CC
to GND..............................................................-0.3V to +6V
INB, OUTA, OUTB, SCLK, DIN, CS............-0.3V to (V
CC
+ 0.3V)
INA+, INA- to GND ..................................................-16V to +16V
Output Short-Circuit Current Duration........................Continuous
Continuous Input Current into Any Terminal.....................±20mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........707mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
ELECTRICAL CHARACTERISTICS
(V
CC
= 5V, V
GND
= 0V, V
INA+
= V
INA-
, Gain = 10V/V, R
OUTA
= R
OUTB
= 1kΩ to V
CC
/2, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
PGA CHARACTERISTICS
Gain Error GE T
A
= +25°C, 0.2V ≤ V
OUTA
≤ V
CC
- 0.2V 0.05 0.38 %
Gain Temperature-Coefficient Tc-GE 2.2 17 ppm/°C
With no V
OS
trim, T
A
= +25°C 1.5 9
Input Offset Voltage (Note 2) V
OS-A
With no V
OS
trim, T
A
= T
MIN
to T
MAX
15
mV
Input Offset-Voltage Drift 10 µV/C
Input Offset-Voltage Trim Range ±17 mV
Input Common-Mode Range V
CM
Guaranteed by CMRR test (Note 3) -V
CC
/2
V
CC
- 2.2
V
-1V ≤ V
CM
≤ V
CC
- 2.2V 50 60
-V
CC
/2 ≤ V
CM
≤ V
CC
- 2.2V, T
A
= +25°C5060Common-Mode Rejection Ratio CMRR
-V
CC
/2 ≤ V
CM
≤ V
CC
- 2.2V 39
dB
Output Short-Circuit current I
SC
70 mA
Input-Voltage Noise Density V
N
f = 10kHz, gain = 157V/V 54 nV/√Hz
Gain = 0.2V/V
Gain = 1V/V
2.15
Gain-Bandwidth Product GBW
Gain = 157V/V 279
MHz
Slew Rate SR 9 V/µs
Settling Time t
S
To 1%, 2V output step 0.45 µs
Distortion THD f = 1kHz, V
OUTA
= 2.5V
P-P
89 dB
Max Capacitive Load C
L
(
MAX
)
1nF
Output Swing V
OH
, V
OL
Voltage output high = V
CC
- V
OUTA
,
voltage output low = V
OUTA
- V
GND
25 60 mV
OUTPUT AMPLIFIER CHARACTERISTICS
Input Bias Current Ib (Note 4) 1 pA
T
A
= +25°C 1.5 9
Input Offset Voltage (Note 2) V
OS-B
T
A
= T
MIN
to T
MAX
15
mV
Output Short-Circuit Current I
SC
70 mA