PGA870 高速全差动可编程增益放大器
The PGA870 is a wideband programmable-gain amplifier (PGA) for high-speed signal chain and data acquisition systems. The PGA870 has been optimized to provide high bandwidth, low distortion, and low noise, making it ideally suited as a 14-bit analog-to-digital converter (ADC) driver for wireless base station signal chain applications. The wide gain range of –11.5 dB to +20 dB can be adjusted in 0.5-dB gain steps through a 6-bit control word applied to the parallel interface. The gain control interface may be configured as a level-triggered latch or an edge-triggered latch, or it may be placed in an unlatched (transparent) mode. In addition to the 6-bit gain control, the PGA870 contains a power-down pin (PD) that can be used to put the device into a low-current, power-down mode.
|
PGA870 |
| -3dB Bandwidth(Typ)(MHz) |
650 |
| 0.1 dB BW Flatness(MHz) |
100 |
| Slew Rate(Typ)(V/us) |
2900 |
| Noise Figure(Typ)(dB) |
13 |
| OIP3(Typ)(dBm) |
47 |
| IMD3(Typ)(dBc) |
98 |
| 2nd Harmonic(dBc) |
93 |
| 3rd Harmonic(dBc) |
88 |
| @ MHz |
100 |
| Number of Channels |
1 |
| Offset Voltage Drift (+/-)(Max)(uV/Degrees Celsius) |
20 |
| Rise Time(Typ)(ns) |
0.55 |
| Fall Time(Typ)(ns) |
0.55 |
| Gain Control |
Digital |
| Gain Range(Typ)(dB) |
31.5 |
| Gain(Min)(dB) |
-11.5 |
| Gain(Max)(dB) |
20 |
| Gain Step(Typ)(dB) |
0.5 |
| Gain Error (Absolute)(Typ)(dB) |
+/-0.05 |
| Vs(Min)(V) |
4.75 |
| Vs(Max)(V) |
5.25 |
| Iq per channel(Max)(mA) |
143 |
| Pin/Package |
28VQFN |
PGA870 特性
- Wideband +5-V Operation: 650-MHz Bandwidth
- Low Impedance, Voltage Mode Output
- Wide Gain Range: –11.5 dB to +20 dB
- Precise 0.5-dB Gain Steps
Step-to-Step Gain Error = ±0.03 dB
- HD2: –93 dBc at 100 MHz
- HD3: –88 dBc at 100 MHz
- IMD3: –98 dBc at 100 MHz, –95 dBc at 200 MHz
- OIP3: +47 dBm at 100 MHz;
Exceeds +45 dBm for Frequencies to 300 MHz
- Flexible Gain Control Interface:
- Supports latched and unlatched options
- Gain may be set in power-down state
- Fast setup and hold times: 2.5 ns
- Low Disable Current: 2 mA
- Pb-Free (RoHS-Compliant) and Green Package
- APPLICATIONS
- Programmable Gain IF Amplifier:
- Differential signal chains
- Single-ended to differential conversion
- Fast Gain Control Loops for:
PGA870 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| PGA870IRHDR |
ACTIVE |
-40 to 85 |
4.35 | 1ku |
VQFN (RHD) | 28 |
3000 | LARGE T&R |
|
| PGA870IRHDT |
ACTIVE |
-40 to 85 |
5.00 | 1ku |
VQFN (RHD) | 28 |
250 | SMALL T&R |
|
PGA870 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| PGA870IRHDR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PGA870IRHDR |
PGA870IRHDR |
| PGA870IRHDT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PGA870IRHDT |
PGA870IRHDT |
PGA870 应用技术支持与电子电路设计开发资源下载
- PGA870 数据资料 dataSheet 下载.PDF
- TI 德州仪器仪运算放大器 (Op Amp)产品选型与价格 . xls
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- 在 PSPICE 中使用德州仪器 (TI) SPICE 模型 (zhca088.HTM, 8 KB)
- PowerPAD™ Thermally Enhanced Package (slma002g.HTM, 8 KB)
- 运算放大器的单电源操作 (PDF 2174 KB)
- Tuning in Amplifiers (PDF 44 KB)
- Op Amp Performance Analysis (PDF 76 KB)
- An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
- Level Shifting Signals with Differential Amplifiers (PDF 23 KB)
- Operational Amplifier Macromodels: A Comparison (PDF 59 KB)
PGA870 工具与软件
| 培训内容 |
型号 |
软件/工具类型 |
| PGA870EVM 评估模块 |
PGA870EVM |
开发电路板/EVM |
