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| 型号： | MAX1932ETC+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC SUPPLY BIAS APD 12-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 控制器，光纤网络 |
| 输入电压： | 2.7 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 4.5 V ~ 90 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WQFN 裸露焊盘 |
| 供应商设备封装： | 12-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
19-2555; Rev 1; 12/02
ATION
EVALU
AVAILA
KIT
BLE
Digitally Controlled, 0.5% Accurate,
Safest APD Bias Supply
General Description
The MAX1932 generates a low-noise, high-voltage output
to bias avalanche photodiodes (APDs) in optical
receivers. Very low output ripple and noise is achieved by
a constant-frequency, pulse-width modulated (PWM)
boost topology combined with a unique architecture that
? Small Circuit Footprint
? Circuit Height < 2mm
? 2.7V to 5.5V Input
? 4.5V to 90V Output
Features
maintains regulation with an optional RC or LC post filter
inside its feedback loop. A precision reference and error
amplifier maintain 0.5% output voltage accuracy.
The MAX1932 protects expensive APDs against adverse
operating conditions while providing optimal bias.
Traditional boost converters measure switch current for
protection, whereas the MAX1932 integrates accurate
high-side current limiting to protect APDs under
avalanche conditions. A current-limit flag allows easy cali-
bration of the APD operating point by indicating the pre-
cise point of avalanche breakdown. The MAX1932 control
scheme prevents output overshoot and undershoot to
provide safe APD operation without data loss.
The output voltage can be accurately set with either
external resistors, an internal 8-bit DAC, an external
DAC, or other voltage source. Output span and offset
are independently settable with external resistors. This
optimizes the utilization of DAC resolution for applica-
?
?
?
?
?
?
?
?
No Overshoot
Accurate High-Side Current Limit
Avalanche Indicator Flag
8-Bit SPI-Compatible DAC
Compatible with External DAC
0.5% Accurate Output
Low Ripple Output (< 1mV)
Small 12-Pin, 4mm ? 4mm Thin QFN Package
Ordering Information
tions that may require limited output voltage range, such
PART
TEMP RANGE
PIN-PACKAGE
as 4.5V to 15V, 4.5V to 45V, 20V to 60V, or 40V to 90V.
Applications
Optical Receivers and Modules
Fiber Optic Network Equipment
Telecom Equipment
MAX1932ETC
-40°C to +85°C 12 Thin QFN
Laser Range Finders
PIN Diode Bias Supply
Pin Configuration
INPUT
2.7V TO 5.5V
Typical Application Circuit
VIN
APD BIAS OUTPUT
MAX1932
4.5V TO 90V
12
11
10
COMP
SCLK
1
9
GND
GATE
DIN
CL
2
3
MAX1932
8
7
COMP
FB
DAC INPUTS
CS
SCLK
DIN
CS+
CS-
4
5
6
AVALANCHE
INDICATOR
FLAG
CL
GND
FB
DACOUT
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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| MAX1932EVKIT | 制造商:Maxim Integrated Products 功能描述:DIGITALLY-CONTROLLED, 0.5% ACCURATE, SAFEST A - Bulk |
| MAX1935ETA | 制造商:Maxim Integrated Products 功能描述:500MA LOW VOLTAGE LINEAR REGULATOR IN TINY QF - Bulk |
| MAX1935ETA+ | 制造商:Maxim Integrated Products 功能描述:LDO REG 0.8V TO 4.5V 0.5A 8TDFN EP - Rail/Tube |
| MAX1935ETA+T | 功能描述:低压差稳压器 - LDO 500mA RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX1935ETA15 | 制造商:Maxim Integrated Products 功能描述:500MA LOW VOLTAGE LINEAR REGULATOR IN TINY QF - Rail/Tube |
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