參數(shù)資料
型號(hào)： MAX2078CTK+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 23/26頁(yè)
文件大?。?/td> 0K
描述： IC FRNT-END ULTRASOUND 8CH 68QFN
應(yīng)用說(shuō)明： Ultrasound Imaging Systems Application Note
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
類型： 超聲波接收器
應(yīng)用： 醫(yī)療用超聲波成像，聲納
安裝類型： 表面貼裝
封裝/外殼： 68-TQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 68-TQFN-EP（10x10）
包裝： 帶卷 (TR)
MAX2078
Octal-Channel Ultrasound Front-End
with CW Doppler Mixers
6
_______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS—VGA MODE (continued)
(
Typical Application Circuit, VREF = 2.475V to 2.525V, VCC1 = 3.13V to 3.47V, VCC2 = 4.5V to 5.25V, TA = 0°C to +70°C, VGND = 0V,
V/C = 1, NP = 0, PD = 0, D43/D42/D41/D40 = 1/0/1/0 (RIN = 200Ω, LNA gain = 18.5dB), D45/D44 = 1/1 (fC = 18MHz), fRF = 5MHz,
capacitance to GND at each of the VGA differential outputs is 25pF, differential capacitance across VGA outputs is 15pF, RL = 1kΩ
differential, reference noise less than 10nV/
√Hz from 1kHz to 20MHz, DOUT loaded with 10MΩ and 60pF. Typical values are at VCC1
= 3.3V, VCC2 = 4.75V, TA = +25°C, unless otherwise noted.) (Note 5)
AC ELECTRICAL CHARACTERISTICS—CW MODE
(
Typical Application Circuit, V/C = 0, PD = 0, NP = 0, CLP = 0, D43/D42/D41/D40 = 1/0/1/0 (RIN = 200Ω, LNA gain = 18.5dB), fRF =
fLO/16 = 5MHz, RS = 200Ω, CI_, CQ_ pulled up to 11V through four separate 0.1% 162Ω resistors, the rise/fall time of the LVDS clock
driving the LO_ is required to be 0.5ns, reference noise less than 10nV/
√Hz from 1kHz to 20MHz (Note 12). Typical values are at
VCC1 = 3.3V, VCC2 = 4.75V, TA = +25°C, unless otherwise noted.) (Note 5)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CW DOPPLER MIXER
Mixer RF Frequency Range
0.9
7.6
MHz
LO Frequency Range
LO+ and LO-
16
120
MHz
Mixer Output Frequency Range
DC
100
kHz
FULL-POWER MODE
Noise Figure
No carrier
3.4
dB
Noise Figure at 100mVP-P Input
100mVP-P at input, fRF = fLO/16 = 1.25MHz, measured at
1kHz offset
3.6
dB
Noise Figure at 200mVP-P Input
200mVP-P at input, fRF = fLO/16 = 1.25MHz, measured at
1kHz offset
4.1
dB
SNR at 100mVP-P Input
100mVP-P at input, fRF = fLO/16 = 1.25MHz, measured at
1kHz offset
-148.3
dBc/Hz
SNR at 200mVP-P Input
200mVP-P at input, fRF = fLO/16 = 1.25MHz, measured at
1kHz offset
-153.8
dBc/Hz
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
3V Supply Modulation Ratio
Gain = 28dB, VVG+ - VVG- = 0.4V, VOUT = 1VP-P,
fRF = 5MHz, fMOD = 1kHz, VMOD = 50mVP-P, ratio of
output sideband at 5.001MHz, 1VP-P
-73
dBc
4.75V/5V Supply Modulation
Ratio
Gain = 28dB, VVG+ - VVG- = 0.4V, VOUT = 1VP-P,
fRF = 5MHz, fMOD = 1kHz, VMOD = 50mVP-P, ratio of
output sideband at 5.001MHz, 1VP-P
-82
dBc
Gain Control Lines Common-
Mode Rejection Ratio
Gain = 28dB, VVG+ - VVG- = 0.4V, fMOD = 5MHz,
VMOD = 50mVP-P, VOUT = 1.0VP-P
-74
dBc
Overdrive Phase Delay
VVG+ - VVG- = -3V, delay between VIN = 300mVP-P and
VIN = 30mVP-P differential
5ns
Output Impedance
Differential
100
Ω
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