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參數(shù)資料
| 型號(hào)： | CS5372-BSZR |
| 廠商： | Cirrus Logic Inc |
| 文件頁數(shù)： | 3/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MODULATOR LP/HP 2CH 24-SSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 調(diào)制器 |
| 分辨率（位）： | 24 b |
| 采樣率（每秒）： | 512k |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 電源電壓： | ±2.5V，3.3 V ~ 5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SSOP |
| 包裝： | 帶卷 (TR) |
| 配用： | 598-1778-ND - EVALUATION BOARD FOR CS5376 |
CS5371 CS5372
DS255F3
11
input signal is a steady state DC signal within
±50 mV of the common mode input voltage. Idle
tones result from patterns in the output bitstream
and appear in the measurement spectrum about
-135 dB down from full scale.
Idle tones can be eliminated by adding differential
DC offset to the modulator inputs. The added off-
set should be applied differentially to the inputs,
common mode offsets do not affect idle tones.
5.1.
Offset Enable - OFST
If the analog inputs are near the common mode
voltage when no signal is present, the OFST pin
can be used to eliminate idle tones.
When
OFST=1, -50 mV of differential offset is added to
the modulator analog inputs to push the idle tones
out of the measurement bandwidth. Care should
be taken that when OFST is active, offset voltages
generated by external circuitry do not negate the
internally added offset.
5.2.
Offset Drift
Offset drift characteristics vary from part to part
and with changes in the power supply voltages. If
the CS5371/72 is used in precision DC measure-
ment applications where offset drift is to be mini-
mized,
the
power
supplies
should
be
well
regulated.
For the lowest offset drift, the CS5371/72 modula-
tors should operate with an MCLK of 2.048 MHz.
The offset drift rate is inversely proportional to
clock frequency, with slower modulator clock rates
exhibiting more offset drift.
Operating from an
MCLK of 1.024 MHz results in twice the offset drift
rate compared to an MCLK of 2.048 MHz.
Because offset drift is not linear with temperature,
an exact drift rate per °C cannot be specified. The
CS5371/72 modulators will exhibit approximately
5 ppm/°C of offset drift operating with an MCLK of
2.048 MHz.
6. VOLTAGE REFERENCE INPUTS
The CS5371/72 modulators are designed to oper-
ate with a 2.5 V voltage reference applied across
the VREF+ and VREF- pins to set the full-scale sig-
nal range of the analog inputs. A 2.5 V voltage ref-
erence results in the highest dynamic range and
best signal-to-noise performance, though smaller
reference voltages may be used.
When the
CS5371/72 modulators are operated with a 2.5 V
reference, the analog inputs measure full-scale
signals of 5 volts peak-to-peak fully differential.
In a single supply power configuration the voltage
reference output should be connected to the
VREF+ pin with the VREF- pin connected to
ground. In a dual supply power configuration the
voltage reference should be powered from the VA+
and VA- supplies, with the modulator VREF+ pin
connected to the voltage reference output and the
VREF- pin connected to VA-. Because most 2.5 V
voltage references require a power supply voltage
greater than 3 V to operate, when powering the
voltage reference from dual supplies the reference
voltage into the VREF+ pin should be defined rela-
tive to the VA- supply.
The selected voltage reference should produce
less than 1
Vrms of noise in the measurement
bandwidth on the VREF+ pin. The digital filter out-
put word rate selection determines the bandwidth
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS5373A | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Low-power, High-performance Modulator and Test DAC |
| CS5373A-IS | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC IC Dlt-Sgm Modulator w/Intgrtd Tst DAC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| CS5373A-ISR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC IC Dlt-Sgm Modulator w/Intgrtd Tst DAC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| CS5373A-ISZ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC IC Dlt-Sgm Modulatr w/Intgrtd Tst DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| CS5373A-ISZR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC IC Dlt-Sgm Modulator w/Intgrtd Tst DAC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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