AD7734BRUZ Analog Devices Inc, AD7734BRUZ Datasheet - Page 19

• Manufacturer Part Number: AD7734BRUZ
• Description: IC ADC 24BIT 4-CH 28-TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD7734BRUZ

• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Bits: 24
• Sampling Rate (per Second): 15.4k
• Number Of Converters: 1
• Power Dissipation (max): 100mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP (0.173", 4.40mm Width)
• Resolution (bits): 24bit
• Sampling Rate: 15.4kSPS
• Input Channel Type: Single Ended
• Supply Voltage Range - Analog: 4.75V To 5.25V
• Supply Current: 13.5µA
• Number Of Elements: 1
• Resolution: 24Bit
• Architecture: Delta-Sigma
• Sample Rate: 3.05MSPS
• Input Polarity: Unipolar/Bipolar
• Input Type: Voltage
• Rated Input Volt: 5/10/±5/±10V
• Differential Input: No
• Power Supply Requirement: Analog and Digital
• Single Supply Voltage (typ): 5V
• Single Supply Voltage (min): 4.75V
• Single Supply Voltage (max): 5.25V
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Power Dissipation: 100mW
• Integral Nonlinearity Error: ±0.0045%FSR
• Operating Temp Range: -40C to 105C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 28
• Package Type: TSSOP
• Input Signal Type: Single-Ended
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7734EBZ - BOARD EVALUATION FOR AD7734
• Lead Free Status / Rohs Status: Compliant

Channel Setup Registers
8 Bits, Read/Write Register, Address 28h–2Bh, Default Value 00h
These registers are used to configure the selected channel, to configure its input voltage range, and to set up the corresponding channel
status register.
Bit
Mnemonic
Default
Bit
7–5
4
3
2
1–0
Table 15.
RNG1
0
0
1
1
Channel Conversion Time Registers
8 Bits, Read/Write Register, Address 30h–33h, Default Value 91h
The conversion time registers enable or disable chopping and configure the digital filter for a particular channel. This register value affects
the conversion time, frequency response, and noise performance of the ADC.
Bit
Mnemonic
Default
Bit
7
6–0
Mnemonic
CHOP
FW
Mnemonic
0
Stat OPT
ENABLE
0
RNG1–RNG0
RNG0
0
1
0
1
±10 V
0 V to +10 V
±5 V
0 V to +5 V
Nominal Input Voltage Range
Bit 7
0
Description
These bits must be 0 for proper operation.
Status Option. When this bit is set to 1, the P0 and P1 bits in the channel status register will reflect the state of
the P0 and P1 pins. When this bit is reset to 0, the RDY bit in the channel status register will reflect the channel
corresponding to the RDY bit in the ADC status register.
Channel Enable. Set this bit to 1 to enable the channel in the continuous conversion mode. A single conversion
will take place regardless of this bit’s value.
This bit must be 0 for proper operation.
This is the channel input voltage range (see Table 15).
Bit 7
CHOP
1
Description
Chopping Enable Bit. Set to 1 to apply chopping mode for a particular channel.
CHOP = 1, single conversion or continuous conversion with one channel enabled.
Conversion Time (µs) = (FW × 128 + 248)/MCLK Frequency (MHz), the FW range is 2 to 127.
CHOP = 1, continuous conversion with two or more channels enabled.
Conversion Time (µs) = (FW × 128 + 249)/MCLK Frequency (MHz), the FW range is 2 to 127.
CHOP = 0, single conversion or continuous conversion with one channel enabled.
Conversion Time (µs) = (FW × 64 + 206)/MCLK Frequency (MHz), the FW range is 3 to 127.
CHOP = 0, continuous conversion with two or more channels enabled.
Conversion Time (µs) = (FW × 64 + 207)/MCLK Frequency (MHz), the FW range is 3 to 127.
0
Bit 6
0
0
Bit 6
Bit 5
0
0
Bit 5
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Stat OPT
Bit 4
0
Bit 4
FW (7-Bit Filter Word)
Bit 3
ENABLE
0
Bit 3
11h
Bit 2
0
0
Bit 2
Bit 1
RNG1
0
Bit 1
AD7734
Bit 0
RNG0
0
Bit 0