- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄5516 > MAX9633ATA+T (Maxim Integrated Products)IC OPAMP GP 27MHZ LN 8TDFN PDF資料下載
參數(shù)資料
| 型號： | MAX9633ATA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 14/14頁 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 27MHZ LN 8TDFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 2 |
| 轉換速率： | 18 V/µs |
| 增益帶寬積： | 27MHz |
| 電流 - 輸入偏壓： | 42nA |
| 電壓 - 輸入偏移： | 70µV |
| 電流 - 電源： | 3.5mA |
| 電流 - 輸出 / 通道： | 50mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 36 V，±2.25 V ~ 18 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WDFN 裸露焊盤 |
| 供應商設備封裝： | 8-TDFN-EP（3x3） |
| 包裝： | 帶卷 (TR) |
9
Maxim Integrated
Dual 36V Op Amp for 18-Bit
SAR ADC Front-End
MAX9633
Detailed Description
The MAX9633 is designed in a new 36V, high-speed
complementary BiCMOS process that is optimized for
excellent AC dynamic performance combined with high-
voltage operation.
The exceptionally fast settling time, low noise, low distor-
tion, high bandwidth, and low input offset voltage make
the IC an excellent solution to drive (up to 18-bit)high-
resolution and fast SAR ADCs.
The MAX9633 is unity gain stable and operates either
with a single supply voltage up to 36V or with dual sup-
plies up to Q18V.
Applications Information
Driving High-Resolution SAR ADCs
High-resolution SAR ADCs typically switch an input
capacitor in the order of tens of pF during the track and
hold phases. Such capacitor switching can cause a
voltage glitch at the input of the ADC that behaves as a
load-transient condition for the driving amplifier. In many
applications, this glitch is avoided by placing an external
capacitor at the ADC input that is in the order of 20 to 50
times the ADC input capacitor. If the ADC input capaci-
tor ranges from 15pF to 30pF, then the external capacitor
is anything between 300pF to 1.5nF, depending on the
application. An isolation resistor can be placed in series
between the amplifier’s output and the external capaci-
tor, as shown in the Typical Application Circuit.
During the load-transient condition described, the driv-
ing amplifier must be able to settle to 0.5 x LSB within
the ADC acquisition time (tACQ). Assuming a first order
approximation, the number of time constants required to
settle to 0.5 x LSB is a logarithm function of the number
N of bits:
( )
N1
1)
k ln 2 +
=
The external RC time constant must be such that:
2)
k x RL x C < tACQ
As an example, consider a 16-bit SAR ADC with 500ns
acquisition time and 20pF input capacitor.
From 1):
k = 12
Assuming a factor of 50 for the external capacitor:
C = 1nF
Finally, formula 2) gives: RL P 40I
The IC is optimized for very fast load-transient recovery
with big capacitive loads and small isolation resistors.
This makes it ideal to drive high-resolution and fast SAR
ADCs.
Recommended SAR ADCs
The MAX9633’s wide supply range and fast settling
make it ideal for driving high-resolution SAR ADCs, such
as the MAX1320. The MAX1320 is a 14-bit, 8-chan-
nel, simultaneous-sampling ADC that measures analog
inputs up to Q5V. Sampling up to 250ksps per channel
for eight channels, the MAX1320 achieves 77dB SNR,
90dBc SFDR, and -86dB THD. The MAX1320’s fast
sample rate and typical input resistance of 8.6kI often
make it necessary to have a low-noise op amp, such as
the MAX9633, driving its inputs. The MAX9633 is also
a good fit for an anti-aliasing active filter prior to the
MAX1320 as shown in the Typical Application Circuit.
The MAX1320 is part of a family of simultaneous sampling
ADCs (MAX1316–MAX1326). Other options include ADCs
that measure 0V to 5V inputs, or Q10V inputs, and two 4
or 8 simultaneous input channels. The MAX1320’s high
speed and resolution make it a fit for multiphase motor
control and power-grid monitoring.
The MAX9633 is also well-suited to drive the 16-bit
MAX11046 8-channel, simultaneous-sampling, SAR
ADC. The MAX11046 is rated for up to 250ksps. An input
driver is typically not necessary at sampling rates below
100ksps. For applications that require > 100ksps sample
rates, the MAX9633 offers small size, high bandwidth,
and ultra-low -100dB THD at 100kHz.
Low Noise and Low Distortion
The MAX9633 is designed for applications that require
very low voltage noise, making it ideal for low source
impedance. When driving 16-bit SAR ADCs with a Q5V
full-scale input, such as the MAX11046, the MAX9633
very low input voltage noise density specification guaran-
tees 16-bit resolution up to 10MHz of signal bandwidth.
The MAX9633 is also designed for ultra-low distor-
tion performance. THD specifications in the Electrical
Characteristics and Typical Operating Characteristics
is calculated up to the 5th harmonic. Even when driving
high voltage swing up to 10VP-P, the MAX9633 maintains
excellent low distortion operation up and beyond 100kHz
of bandwidth.
Besides driving high-resolution and high-bandwidth SAR
ADCs, applications that benefit for low-noise and low-
distortion applications can be found in industrial power-
grid and smart-grid, industrial motor-control, medical
imaging, automated test equipment, instrumentation,
and professional audio equipment.
相關PDF資料 |
PDF描述 |
|---|---|
| LPSJ601.Z | FUSEHOLDER CLASS J 60A 1 POLE |
| BK1/S506-12.5-R | FUSE 12.5A 250V T-LAG GLASS |
| 8-33457-1 | CONN RING 12-10AWG #10 SOLIS |
| LT301001C | FUSEBLOCK CLASS T 100A 1 POLE |
| GMA-315-R | FUSE .315A 250V FST GLASS UL CSA |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9633EVKIT+ | 功能描述:放大器 IC 開發(fā)工具 MAX9633 Eval Kit RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| MAX9634EVKIT+ | 功能描述:放大器 IC 開發(fā)工具 MAX9634 Eval Kit RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| MAX9634FERS+ | 制造商:Maxim Integrated Products 功能描述:PRECISION , 1UA CURRENT SENSE AMP - Rail/Tube |
| MAX9634FERS+T | 功能描述:電流靈敏放大器 Precision 1uA Current Sense Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| MAX9634FEUK+T | 功能描述:電流靈敏放大器 Precision 1uA Current Sense Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。