参数资料
| 型号： | ISL28433TSSOPEVAL1Z |
| 厂商： | Intersil |
| 文件页数： | 1/4页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR ISL28433 14TSSOP |
| 标准包装： | 1 |
| 每 IC 通道数： | 4 - 四 |
| 放大器类型： | 断路器（零漂移） |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.2 V/µs |
| 电流 - 输出 / 通道： | 19mA |
| 工作温度： | -40°C ~ 125°C |
| 电流供应（主 IC）： | 18µA |
| 电压 - 电源，单路/双路(±)： | 1.65 V ~ 5.5 V，±0.825 V ~ 2.75 V |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ISL28433 |
Application Note 1575
ISL28433SOICEVAL1Z, ISL28433TSSOPEVAL1Z
Evaluation Board User’s Guide
Introduction
The ISL28433SOICEVAL1Z and ISL28433TSSOPEVAL1Z
Evaluation Board is designed to evaluate the performance
of the ISL28433 Chopper Stabilized op amp. The evaluation
board contains the circuitry needed to evaluate the high
performance of the ISL28433 amplifier. The ISL28433
chopper stabilized rail-to-rail quad op amp features a low
8μV maximum V OS over-temperature and a 0.1Hz 1/f
noise corner frequency enabling very high gain single-stage
DC amplifiers that can operate from single cell batteries
while consuming only 20μA of current. The
ISL28433SOICEVAL1Z and ISL28433TSSOPEVAL1Z
evaluation board can be configured as a precision high-gain
(G = 10,000V/V) differential amplifier and demonstrates
the level of performance possible with this type of amplifier
while operating from battery voltages as low as 1.65V.
Reference Documents
Power Supplies (Figure 1)
External power connections are made through the V+,
V-, VREF, and GND connections on the evaluation board.
The circuit can operate from a single supply or from dual
supplies. For single supply operation, the V- and GND
pins are tied together to the negative or ground
reference of the power supply. For split supplies, V+ and
V- terminals connect to their respective supply terminals.
De-coupling capacitors C1 and C2 provide low-frequency
power-supply filtering, while additional capacitors, C3
and C4, which are connected close to the part, filter out
high frequency noise. Anti-reverse diodes D1 and D2
(optional) protects the circuit in the momentary case of
accidentally reversing the power supplies to the
evaluation board. The VREF pin can be connected to
ground to establish a ground referenced input for split
supply operation, or can be externally set to any
reference level for single supply operation.
? ISL28233, ISL28433 Data Sheet; FN7692
Evaluation Board Key Features
J3 V-
V+ J1
J4
VREF
? Single Supply Operation: +1.65V to +5.5V
C2
R44
R1
C1
? Dual Supply Operation: ±0.825V to ±2.75V
? Singled-Ended or Differential Input Operation with
High Gain (G= 10,000V/V)
? External VREF input
V-
4.7μF 0
D2
0
4.7μF
D1
V+
GND
J2
? Banana Jack Connectors for Power Supply and VREF
Inputs
? BNC Connectors for Op Amp Input and Output
Terminals
V- AND V+
IC SUPPLY PINS
FIGURE 1. POWER SUPPLY CIRCUIT
? Convenient PCB Pads for Op Amp Input/Output
Impedance Loading
R39, R47, R49, R50
IN-
IN+
IN +
R14, R16,
R18, R40
100 Ω
R15, R17,
R19, R41
100 Ω
IN-A 2
IN-B 6
IN-C 9
IN-D 13
IN+A 3
IN+B 5
IN+C 10
IN+D 12
1M Ω
-
ISL28433
+
V+
4
11
V-
OUT_A
OUT_B
OUT_C
OUT_D
1
7
8
14
0 Ω
R51-R54
OUT
VCM
VREF
VREF
GND
R24, R27, R29, R45
OPEN
OPEN
R67-R70
OPEN
FIGURE 2. BASIC DIFFERENTIAL AMPLIFIER CONFIGURATION
October 1, 2010
AN1575.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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