Datasheet

MAX2037
Ultrasound Variable-Gain Amplifier
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(Figure 2, V
CC
= V
REF
= 4.75V to 5.25V, V
CM
= (3/5)V
REF
, T
A
= 0°C to +70°C, V
GND
= 0, PD = 0, no RF signals applied, capacitance
to GND at each of the VGA differential outputs is 60pF, differential capacitance across the VGA outputs is 10pF, R
L
= 1kΩ. Typical
values are at V
CC
= V
REF
= 5V, T
A
= +25°C, unless otherwise noted.) (Note 2)
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
, V
REF
to GND .................................................-0.3V to +5.5V
Any Other Pins to GND...............................-0.3V to (V
CC
+ 0.3V)
VGA Differential Input Voltage (VGIN_+ - VGIN_-)...........8.0V
P-P
Analog Gain-Control Input Differential Voltage
(VG_CTL+ - VG_CTL-)...................................................8.0V
P-P
Continuous Power Dissipation (T
A
= +70°C)
100-Pin TQFP
(derated 45.5mW/°C above +70°C).........................3636.4mW
Operating Temperature Range...............................0°C to +70°C
Junction Temperature......................................................+150°C
θ
JC
(Note 1) .....................................................................+2°C/W
θ
JA
(Note 1) ...................................................................+22°C/W
Storage Temperature Range .............................-40°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDTIONS MIN TYP MAX UNITS
Supply Voltage Range V
CC
4.75 5 5.25 V
V
CC
External Reference Voltage
Range
V
REF
(Note 3) 4.75 5 5.25 V
PD = 0 204 231
Total Power Supply Current
Refers to V
CC
supply
current plus V
REF
current
PD = 1 27 33
mA
V
CC
Supply Current I
VCC
192 216 mA
V
REF
Current I
REF
12 15 mA
Current Consumption per
Amplifier Channel
Refers to V
CC
supply current 24 27 mA
Minimum gain +2
Differential Analog Control
Voltage Range
Maximum gain -2
V
P-P
Differential Analog Control
Common-Mode Voltage
V
CM
2.85 3.0 3.15 V
Analog Control Input Source/Sink
Current
4.5 5 mA
LOGIC INPUTS
CMOS Input High Voltage V
IH
2.0 V
CMOS Input Low Voltage V
IL
0.8 V
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial
.