AD7734BRUZ 4 Single ended Ch +/-10V input 24B SD ADC
♠ Specifications
| Product Attribute | Attribute Value |
| Manufacturer: | Analog Devices Inc. |
| Product Category: | Analog to Digital Converters - ADC |
| Series: | AD7734 |
| Mounting Style: | SMD/SMT |
| Package / Case: | TSSOP-28 |
| Resolution: | 24 bit |
| Number of Channels: | 4 Channel |
| Interface Type: | 3-Wire, Microwire, SPI |
| Sampling Rate: | 15.4 kS/s |
| Input Type: | Single-Ended |
| Architecture: | Sigma-Delta |
| Analog Supply Voltage: | 4.75 V to 5.25 V |
| Digital Supply Voltage: | 2.7 V to 3.6 V, 4.75 V to 5.25 V |
| Minimum Operating Temperature: | - 40 C |
| Maximum Operating Temperature: | + 105 C |
| Packaging: | Tube |
| Brand: | Analog Devices |
| Development Kit: | EVAL-AD7734EBZ |
| Gain Error: | +/- 0.5 %FSR |
| Height: | 1.05 mm |
| INL - Integral Nonlinearity: | +/- 0.006 % FSR |
| Input Voltage: | 5 V/10 V, +/- 5 V/+/- 10 V |
| Length: | 9.7 mm |
| Number of ADC Inputs: | 4 Input |
| Number of Converters: | 1 Converter |
| Operating Supply Voltage: | 5 V |
| Pd - Power Dissipation: | 100 mW |
| Power Consumption: | 85 mW |
| Product Type: | ADCs - Analog to Digital Converters |
| Reference Type: | External |
| Sample and Hold: | No |
| Factory Pack Quantity: | 50 |
| Subcategory: | Data Converter ICs |
| Supply Voltage - Max: | 5 V |
| Supply Voltage - Min: | 5 V |
| Width: | 4.4 mm |
| Unit Weight: | 0.014215 oz |
♠ Product Description
The AD7734 is a high precision, high throughput analog front end. True 16-bit p-p resolution is achievable with a total conversion time of 500 μs (2 kHz channel switching), making it ideally suitable for high resolution multiplexing applications.
The device can be configured via a simple digital interface, which allows users to balance the noise performance against data throughput up to 15.4 kHz.
The analog front end features four single-ended input channels with unipolar or true bipolar input ranges to ±10 V while operating from a single +5 V analog supply. The device has an overrange and underrange detection capability and accepts an analog input overvoltage to ±16.5 V without degrading the performance of the adjacent channels.
The differential reference input features “No-Reference” detect capability. The ADC also supports per channel system calibration options. The digital serial interface can be configured for 3-wire operation and is compatible with microcontrollers and digital signal processors. All interface inputs are Schmitt triggered.
The device is specified for operation over the extended industrial temperature range of –40°C to +105°C.
Other devices in the AD7734 family are the AD7732 and the AD7738.
The AD7732 is similar to the AD7734, but its analog front end features two fully differential input channels.
The AD7738 analog front end is configurable for four fully differential or eight single-ended input channels, features 0.625 V to 2.5 V bipolar/unipolar input ranges, and accepts a common-mode input voltage from 200 mV to AVDD – 300mV.
The AD7738 multiplexer output is pinned out externally, allowing the user to implement programmable gain or signal conditioning before being applied to the ADC.
• High resolution analog-to-digital converter (ADC)
24 bits no missing codes
±0.0025% nonlinearity
• Optimized for fast channel switching
18-bit p-p resolution (21 bits effective) at 500 Hz
16-bit p-p resolution (19 bits effective) at 2 kHz
14-bit p-p resolution (18 bits effective) at 15 kHz
• On-chip per channel system calibration
4 single-ended analog inputs
Input ranges +5 V, ±5 V, +10 V, ±10 V
Overvoltage tolerant
Up to ±16.5 V not affecting adjacent channel
Up to ±50 V absolute maximum
• 3-wire serial interface
SPI, QSPI™, MICROWIRE, and DSP compatible
Schmitt trigger on logic inputs
• Single-supply operation
5 V analog supply
3 V or 5 V digital supply
• Package: 28-lead TSSOP
PLCs/DCS
Multiplexing applications
Process control
Industrial instrumentation
