AVDD1 = 1.8 V, AVDD2 = 3.0 V, DRVDD = 1.8 V, 1.0 V internal" />
參數(shù)資料
型號(hào): AD9278BBCZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 23/44頁(yè)
文件大?。?/td> 0K
描述: IC ADC 12BIT 50MSPS 144CSPBGA
標(biāo)準(zhǔn)包裝: 1
類(lèi)型: AAF,ADC,解調(diào)器,LNA,VGA
分辨率(位): 12 b
采樣率(每秒): 50M
數(shù)據(jù)接口: 串行,SPI?
電壓電源: 模擬和數(shù)字
電源電壓: 1.7 V ~ 1.9 V,2.7 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 144-LFBGA,CSPBGA
供應(yīng)商設(shè)備封裝: 144-CSPBGA(10x10)
包裝: 托盤(pán)
Data Sheet
AD9278
Rev. A | Page 3 of 44
SPECIFICATIONS
AC SPECIFICATIONS
AVDD1 = 1.8 V, AVDD2 = 3.0 V, DRVDD = 1.8 V, 1.0 V internal ADC reference, full temperature range (40°C to +85°C), fIN = 5 MHz,
RS = 50 , RFB = ∞ (unterminated), LNA gain = 21.3 dB, LNA bias = default, PGA gain = 24 dB, GAIN = 0.8 V, GAIN+ = 0 V, AAF LPF
cutoff = fSAMPLE/3 (MODE I/II/III), AAF LPF cutoff = fSAMPLE/4.5 (MODE IV), HPF cutoff = LPF cutoff/12, MODE I = fSAMPLE = 40 MSPS,
MODE II = fSAMPLE = 25 MSPS, MODE III = fSAMPLE = 50 MSPS, MODE IV = fSAMPLE = 65 MSPS, low power LVDS mode, unless otherwise
noted.
Table 1.
Parameter1
Test Conditions/Comments
Min
Typ
Max
Unit
LNA CHARACTERISTICS
Gain
Single-ended input to differential
output
15.6/17.9/21.3
dB
Single-ended input to single-ended
output
9.6/11.9/15.3
dB
0.1 dB Input Compression Point
LNA gain = 15.6 dB
1.00
V p-p
LNA gain = 17.9 dB
0.75
V p-p
LNA gain = 21.3 dB
0.45
V p-p
1 dB Input Compression Point
LNA gain = 15.6 dB
1.20
V p-p
LNA gain = 17.9 dB
0.90
V p-p
LNA gain = 21.3 dB
0.60
V p-p
Input Common Mode (LI-x, LG-x)
2.2
V
Output Common Mode (LO-x)
V
Output Common Mode (LOSW-x)
Switch off
High-Z
Ω
Switch on
1.5
V
Input Resistance (LI-x)
RFB = 350 Ω, LNA gain = 21.3 dB
50
Ω
RFB = 1400 Ω, LNA gain = 21.3 dB
200
Ω
RFB = ∞, LNA gain = 21.3 dB
15
Input Capacitance (LI-x)
22
pF
3 dB Bandwidth
LNA gain = 15.6 dB
100
MHz
LNA gain = 17.9 dB
80
MHz
LNA gain = 21.3 dB
50
MHz
Input Noise Voltage
RS = 0 Ω, RFB = ∞
LNA gain = 15.6 dB
1.60
nV/√Hz
LNA gain = 17.9 dB
1.42
nV/√Hz
LNA gain = 21.3 dB
1.27
nV/√Hz
Input Noise Current
RFB = ∞
1.5
pA/√Hz
Noise Figure
RS = 50 Ω
Active Termination Matched
LNA gain = 15.6 dB, RFB = 200 Ω
7.8
dB
LNA gain = 17.9 dB, RFB = 250 Ω
6.7
dB
LNA gain = 21.3 dB, RFB = 350 Ω
5.6
dB
Unterminated
LNA gain = 15.6 dB, RFB = ∞
6.1
dB
LNA gain = 17.9 dB, RFB = ∞
5.3
dB
LNA gain = 21.3 dB, RFB = ∞
4.7
dB
FULL-CHANNEL (TGC)
CHARACTERISTICS
AAF Low-Pass Cutoff
3 dB, programmable
8
18
MHz
In Range AAF Bandwidth
Tolerance
±10
%
Group Delay Variation
f = 1 MHz to 18 MHz, GAIN+ = 0 V to 1.6 V
±0.3
ns
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