max2078ctk Maxim Integrated Products, Inc., max2078ctk Datasheet - Page 14

• Manufacturer Part Number: max2078ctk
• Description: Octal-channel Ultrasound Front-end With Cw Doppler Mixers
• Manufacturer: Maxim Integrated Products, Inc.

Octal-Channel Ultrasound Front-End
with CW Doppler Mixers
14
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PIN
37
38
39
40
41
42
43
45
46
47
48
49
50
51
52
54
55
56
57
58
59
60
61
62
65
66
67
68
OUT7+
OUT6+
OUT5+
OUT4+
OUT3+
OUT2+
OUT1+
NAME
OUT6-
OUT5-
OUT4-
OUT3-
OUT2-
OUT1-
INC1
CQ+
LO+
CLK
DIN
CQ-
ZF1
ZF2
LO-
V/C
CI+
IN1
CS
NP
CI-
Channel 7 Positive Differential Output
Channel 6 Negative Differential Output
Channel 6 Positive Differential Output
Channel 5 Negative Differential Output
Channel 5 Positive Differential Output
Differential Local Oscillator Input. LO is divided in the beamformer.
Channel 4 Negative Differential Output
Channel 4 Positive Differential Output
Channel 3 Negative Differential Output
Channel 3 Positive Differential Output
Channel 2 Negative Differential Output
Channel 2 Positive Differential Output
Channel 1 Negative Differential Output
Channel 1 Positive Differential Output
Serial Port Clock Input (Positive Edge Triggered). 3.3V CMOS. Clock input for programming the serial
shift registers.
Serial Port Data Input. 3.3V CMOS. Data input to program the serial shift registers.
Serial Port Chip Select Input. 3.3V CMOS. Used to store programming bits in registers, as well as in
CW mode, synchronizing all channel phases (on a rising edge).
VGA Standby Mode Select Input. Set NP to 1 to place the entire device in standby mode. Overrides
soft channel shutdown in serial shift register, but not general power-down (PD).
VGA/CW Mode Select Input. Set V/C to a logic-high to enable the VGAs and disable CW mode. Set
V/C to a logic-low to enable the CW mixers and disable the VGA mode.
8-Channel CW Negative Quadrature Output. Connect to an external 11V power supply with a 162Ω
external pullup resistor.
8-Channel CW Positive Quadrature Output. Connect to an external 11V power supply with a 162Ω
external pullup resistor.
8-Channel CW Negative In-Phase Output. Connect to an external 11V power supply with a 162Ω
external pullup resistor.
8-Channel CW Positive In-Phase Output. Connect to an external 11V power supply with a 162Ω
external pullup resistor.
Channel 1 Active Impedance Matching Line. AC-couple to source with a 10nF capacitor.
Channel 1 Input
Channel 1 Clamp Input. Connect to the input coupling capacitor. See the Typical Application Circuits
for details.
Channel 2 Active Impedance Matching Line. AC-couple to source with a 10nF capacitor.
FUNCTION
Pin Description (continued)