Electronic Components Datasheet Search |
|
RHF1201KSO2 Datasheet(PDF) 10 Page - STMicroelectronics |
|
RHF1201KSO2 Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 18 page Application information RHF1201 10/18 Output enable (OEB) When set to low level (VIL), all digital outputs remain active and are in low impedance state. When set to high level (VIH), all digital output buffers are in high impedance state while the converter goes on sampling. When OEB is set to a low level again, the data arrives on the output with a very short Ton delay. This mechanism allows the chip select of the device. Figure 3: Timing diagram on page 5 summarizes this functionality. Slew rate control (SRC) When set to high level (VIH), all digital output currents are limited to a clamp value so that digital noise power is reduced to the minimum. When set to low level (VIL), the output edges are twice as fast. Out of range (OR) This function is implemented on the output stage in order to set an “Out of Range” flag whenever the digital data is over the full scale range. Typically, there is a detection of all the data at ’0’ or all the data at ’1’. It sets an output signal OR which is in low level state (VOL) when the data stays within the range, or in high level state (VOH) when the data is out of range. Data ready (DR) The Data Ready output is an image of the clock being synchronized on the output data (D0 to D11). This is a very helpful signal that simplifies the synchronization of the measurement equipment or of the controlling DSP. As all other digital outputs, DR goes into high impedance state when OEB is set to high level as shown in Figure 3: Timing diagram on page 5. 7.2 Driving the analog input 7.2.1 Differential inputs The RHF1201is designed to obtain optimum performance when driven on differential inputs. An RF transformer is an efficient way of achieving this high performance. Figure 4: Differential input configuration describes the schematics. The input signal is fed to the primary of the transformer, while the secondary drives both ADC inputs. The common mode voltage of the ADC (INCM) is connected to the center-tap of the secondary of the transformer in order to bias the input signal around this common voltage, internally set close to 0.5V. The INCM is de-coupled to maintain a low noise level on this node. Our evaluation board is mounted with a 1:1 ADT1-1 transformer from Minicircuits. You might also use a higher impedance ratio (1:2 or 1:4) to reduce the driving requirement on the analog signal source. Each analog input can drive a 1 Vpp amplitude input signal, so the resulting differential amplitude is 2 Vpp. |
Similar Part No. - RHF1201KSO2 |
|
Similar Description - RHF1201KSO2 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |