参数资料
| 型号： | LTC1052CN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 23/24页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP CHOP-STBL LONOIS 14DIP |
| 标准包装： | 25 |
| 系列： | LTCMOS™ |
| 放大器类型： | 断路器（零漂移） |
| 电路数： | 1 |
| 转换速率： | 4 V/µs |
| 增益带宽积： | 1.2MHz |
| 电流 - 输入偏压： | 1pA |
| 电压 - 输入偏移： | 0.5µV |
| 电流 - 电源： | 1.7mA |
| 电压 - 电源，单路/双路(±)： | 4.75 V ~ 16 V，±2.38 V ~ 8 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 14-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 14-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 1321 (CN2011-ZH PDF) |
LTC1052/LTC7652
8
1052fa
Figure 1b. LTC1052 Block Diagram
Sampling Cycle
THEORY OF OPERATIO
U
LTC1052/7652 TO02
+
–
gm6
+IN
–IN
S1
S3
VREF
RL1
V–
+
–
+
–
+
S2
RL5
VOUT
RL4
CEXT A
CEXT B
RL2
l3
l1
δl
l2
C1
C2
+
–
gm1
gm2
gm3
gm4
gm5
APPLICATIO S I FOR ATIO
WU
UU
EXTERNAL CAPACITORS
CEXTA and CEXTB are the holding elements of a sample-
and-hold circuit. The important capacitor characteristics
are leakage current and dielectric absorption. A high
quality film-type capacitor such as mylar or polypropylene
provides excellent performance. However, low grade
capacitors such as ceramic are suitable in many
applications.
Capacitors with very high dielectric absorption (ceramic)
can take several seconds to settle after power is first
turned on. This settling appears as clock ripple on the
output and, as the capacitor settles, the ripple gradually
disappears. If fast settling after power turn-on is
important, mylar or polypropylene is recommended.
Above 85°C, leakage, both from the holding capacitors
and the printed circuit board, becomes important. To
maintain the capabilities of the LTC1052 it may be
necessary to use Teflon capacitors and Teflon standoffs
when operating at 125°C (see Achieving Picoampere/
Microvolt Performance).
CEXTA and CEXTB are normally in the range of 0.1F
to 1.0F. All specifications are guaranteed with 0.1F and
the broadband noise (refer to Typical Performance Char-
acteristics) is only very slightly degraded with 0.1F.
Output clock ripple is not present for capacitors of 0.1F
or greater at any temperature.
On competitive devices, connecting CEXTA and CEXTB to
V– causes an increase in amplifier noise. Design changes
have eliminated this problem on the LTC1052. On the
14-pin LTC1052 and 8-pin LTC7652, the capacitors can
be returned to V– or CRETURN with no change in noise
performance.
ACHIEVING PICOAMPERE/MICROVOLT PERFORMANCE
Picoamperes
In order to realize the picoampere level of accuracy of the
LTC1052, proper care must be exercised. Leakage
currents in circuitry external to the amplifier can
significantly degrade performance. High quality insulation
should be used (e.g., Teflon, Kel-F); cleaning of all
insulating surfaces to remove fluxes and other residues
will probably be necessary—particularly for high
temperature performance. Surface coating may be
necessary to provide a moisture barrier in high humidity
environments.
Board leakage can be minimized by encircling the input
connections with a guard ring operated at a potential
close to that of the inputs: in inverting configurations, the
guard ring should be tied to ground; in noninverting
Teflon is a trademark of Dupont.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1052CS | 制造商:LINTEC 功能描述: |
| LTC1052CSW | 功能描述:IC OPAMP CHOP-STBL LONOIS16SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:LTCMOS™ 标准包装:150 系列:- 放大器类型:音频 电路数:2 输出类型:- 转换速率:5 V/µs 增益带宽积:12MHz -3db带宽:- 电流 - 输入偏压:100nA 电压 - 输入偏移:500µV 电流 - 电源:6mA 电流 - 输出 / 通道:50mA 电压 - 电源，单路/双路(±):4 V ~ 32 V，±2 V ~ 16 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| LTC1052CSW#PBF | 功能描述:IC OPAMP CHOP-STBL LONOIS16SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:LTCMOS™ 标准包装:150 系列:- 放大器类型:音频 电路数:2 输出类型:- 转换速率:5 V/µs 增益带宽积:12MHz -3db带宽:- 电流 - 输入偏压:100nA 电压 - 输入偏移:500µV 电流 - 电源:6mA 电流 - 输出 / 通道:50mA 电压 - 电源，单路/双路(±):4 V ~ 32 V，±2 V ~ 16 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| LTC1052CSW#TR | 功能描述:IC OPAMP CHOP STABLE LN 16SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:LTCMOS™ 标准包装:150 系列:- 放大器类型:音频 电路数:2 输出类型:- 转换速率:5 V/µs 增益带宽积:12MHz -3db带宽:- 电流 - 输入偏压:100nA 电压 - 输入偏移:500µV 电流 - 电源:6mA 电流 - 输出 / 通道:50mA 电压 - 电源，单路/双路(±):4 V ~ 32 V，±2 V ~ 16 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| LTC1052CSW#TRPBF | 功能描述:IC OPAMP CHOP-STBL LONOIS16SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:LTCMOS™ 标准包装:150 系列:- 放大器类型:音频 电路数:2 输出类型:- 转换速率:5 V/µs 增益带宽积:12MHz -3db带宽:- 电流 - 输入偏压:100nA 电压 - 输入偏移:500µV 电流 - 电源:6mA 电流 - 输出 / 通道:50mA 电压 - 电源，单路/双路(±):4 V ~ 32 V，±2 V ~ 16 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
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