- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄5276 > ADA4899-1YCPZ-RL (Analog Devices Inc)IC OPAMP VF ULN ULDIST 8LFCSP PDF資料下載
參數(shù)資料
| 型號(hào)： | ADA4899-1YCPZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 8/21頁 |
| 文件大小： | 0K |
| 描述： | IC OPAMP VF ULN ULDIST 8LFCSP |
| 產(chǎn)品培訓(xùn)模塊： | Practical Guide High Speed PCB Layout |
| 設(shè)計(jì)資源： | High Speed, Precision, Differential AC-Coupled Drive Circuit for AD7625 (CN0080) |
| 標(biāo)準(zhǔn)包裝： | 5,000 |
| 放大器類型： | 電壓反饋 |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 310 V/µs |
| -3db帶寬： | 600MHz |
| 電流 - 輸入偏壓： | 6µA |
| 電壓 - 輸入偏移： | 35µV |
| 電流 - 電源： | 14.7mA |
| 電流 - 輸出 / 通道： | 200mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 12 V，±2.25 V ~ 6 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-VFDFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 8-LFCSP-VD（3x3） |
| 包裝： | 帶卷 (TR) |
ADA4899-1
Rev. B | Page 15 of 20
NOISE
To analyze the noise performance of an amplifier circuit, first
identify the noise sources, then determine if the source has a
significant contribution to the overall noise performance of the
amplifier. To simplify the noise calculations, noise spectral
densities were used, rather than actual voltages to leave
bandwidth out of the expressions (noise spectral density, which
is generally expressed in nV/√Hz, is equivalent to the noise in a
1 Hz bandwidth).
The noise model shown in Figure 48 has six individual noise
sources: the Johnson noise of the three resistors, the op amp
voltage noise, and the current noise in each input of the
amplifier. Each noise source has its own contribution to the
noise at the output. Noise is generally specified referred to input
(RTI), but it is often simpler to calculate the noise referred to
the output (RTO) and then divide by the noise gain to obtain
the RTI noise.
GAIN FROM
B TO OUTPUT
= – R2
R1
GAIN FROM
A TO OUTPUT
=
NOISE GAIN =
NG = 1 + R2
R1
IN–
VN
VN, R1
VN, R3
R1
R2
IN+
R3
4kTR2
4kTR1
4kTR3
VN, R2
B
A
VN2 + 4kTR3 + 4kTR1
R2
2
R1 + R2
IN+2R32 + IN–2
R1 × R2
2
+ 4kTR2
R1
2
R1 + R2
RTI NOISE =
RTO NOISE = NG × RTI NOISE
VOUT
+
0
57
20
-07
0
Figure 48. Op Amp Noise Analysis Model
All resistors have a Johnson noise that is calculated by
)
(4kBTR
where:
k is Boltzmann’s Constant (1.38 × 10–23 J/K).
B is the bandwidth in Hz.
T is the absolute temperature in Kelvin.
R is the resistance in ohms.
A simple relationship that is easy to remember is that a 50 Ω
resistor generates a Johnson noise of 1 nV√Hz at 25°C.
In applications where noise sensitivity is critical, care must be
taken not to introduce other significant noise sources to the
amplifier. Each resistor is a noise source. Attention to the
following areas is critical to maintain low noise performance:
design, layout, and component selection. A summary of noise
performance for the amplifier and associated resistors can be
seen in Table 4.
ADC DRIVER
The ultralow noise and distortion performance of the
ADA4899-1 makes it an excellent candidate for driving 16-bit
ADCs. The schematic for a single-ended input buffer using the
ADA4899-1 and the AD7677, a 1 MSPS, 16-bit ADC, is shown
in Figure 49. Table 5 shows the performance data of the
ADA4899-1 and the AD7677.
05
72
0-
0
62
+5V
ANALOG
INPUT
ADA4899-1
–5V
2.7nF
25
15
+5V
ANALOG
INPUT
+
–
ADA4899-1
–5V
2.7nF
25
15
AD7677
IN+
IN–
Figure 49. Single-Ended Input ADC Driver
Table 5. ADA4899-1, Single-Ended Driver for AD7677
16-Bit, 1 MSPS, fC = 50 kHz
Parameter
Measurement (dB)
Second Harmonic Distortion
116.5
Third Harmonic Distortion
111.9
THD
108.6
SFDR
+101.4
SNR
+92.6
The ADA4899-1 configured as a single-ended-to-differential
associated performance.
05720-
061
+5V
+2.5V REF
ANALOG
INPUT
ADA4899-1
–5V
590
+5V
+2.5V
REF
ADA4899-1
–5V
2.7nF
590
15
590
AD7677
IN+
IN–
Figure 50. Single-Ended-to-Differential ADC Driver
Table 6. ADA4899-1, Single Ended-to-Differential Driver for
AD7677 16-Bit, 1 MSPS, fC = 500 kHz
Parameter
Measurement (dB)
THD
92.7
SFDR
+91.8
SNR
+90.6
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NPPN082GFNS-RC | CONN RECEPT 2MM DUAL SMD 16POS |
| EL5227CL | IC BUFFER LP OCT 2.5MHZ 24-QFN |
| AD8609ARZ-REEL | IC OPAMP GP R-R CMOS QUAD 14SOIC |
| AD8609ARUZ-REEL | IC OPAMP GP R-R CMOS 14TSSOP |
| AD628ARMZ-RL | IC AMP PGA DIFF PREC 8MSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADA4899-1YCPZ-RL7 | 制造商:Analog Devices 功能描述:OP AMP SGL VOLT FDBK 6V/12V 8LFCSP - Tape and Reel |
| ADA4899-1YRD-EBZ | 功能描述:BOARD EVAL FOR ADA4899-1YRD RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 運(yùn)算放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| ADA4899-1YRDZ | 功能描述:IC OPAMP VF ULN ULDIST 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| ADA4899-1YRDZ-R7 | 功能描述:IC OPAMP VF ULN ULDIST 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5 |
| ADA4899-1YRDZ-RL | 功能描述:IC OPAMP VF ULN ULDIST 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。