MAX11040KGUU+T Maxim Integrated, MAX11040KGUU+T Datasheet - Page 16

• Manufacturer Part Number: MAX11040KGUU+T
• Description: Analog to Digital Converters - ADC 24Bit 4Ch Simul-Samp Cascadable Sig Delt
• Manufacturer: Maxim Integrated

Specifications of MAX11040KGUU+T

• Rohs: yes
• Number Of Channels: 4
• Architecture: Sigma-Delta
• Conversion Rate: 64 KSPs
• Resolution: 24 bit
• Input Type: Differential
• Snr: 106 dB, 117 dB
• Interface Type: 4-Wire (SPI, Microwire), QSPI
• Operating Supply Voltage: 2.7 V to 3.6 V, 3 V to 3.6 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Maximum Power Dissipation: 1096 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 4
• Voltage Reference: Internal 2.2 V

The devices operate with either a +2.5V internal
bandgap reference or an external reference source
between +2.3V and +2.7V applied at REFIO. Bypass
REFIO and each REF_ to AGND with a 1μF capacitor.
The reference voltage sets the positive and negative
full-scale voltage according to the following formula:
The reference voltage at REFIO (external or internal) is
individually buffered to generate the reference voltages
at REF0 to REF3 (see Figure 6.) These independent
buffers minimize the potential for crosstalk between
each of the internal ADCs.
The devices’ interface is fully compatible with SPI/DSP
standard serial interfaces (compatible with SPI modes
CPOL = 1, CPHA = 0). The serial interface provides
access to four on-chip registers: Sampling Instant
Control register (32 bits), Data Rate Control register (16
bits), Configuration register (8 bits), and Data register
(96 bits). All serial-interface commands begin with a
command byte, which addresses a specific register,
followed by data bytes with a data length that depends
on the specific register addressed and the number of
24-/16-Bit, 4-Channel, Simultaneous-Sampling,
Cascadable, Sigma-Delta ADCs
MAX11040K/MAX11060
Figure 5. Low-Frequency Analog Input Overvoltage Detection and Recovery
16
±FS = ±0.88 V
FAULT
OVRFLW
LATENCY
REFIO
LATENCY
Serial Interface
Reference
DIGITAL OUTPUT
DATA AT DOUT
|AIN+ - AIN-|
devices cascaded (see Figures 7, 8, and the Registers
section).
The serial interface consists of eight signals: CS,
SCLK, DIN, DOUT, CASCIN, CASCOUT, DRDYIN,
and DRDYOUT. CASCIN, CASCOUT, DRDYIN, and
DRDYOUT are used for daisy chaining multiple devices
together. See the Multiple Device Connection section
for details on how to connect CASCIN, CASCOUT,
Figure 6. REFIO Input
RECOVERY TIME
REFIO
REF0
REF1
REF2
REF3
LATENCY
LATENCY
FAULT-DETECTION
(V
FULL SCALE
THRESHOLD
(|0.88V
PFT
OR |V
REF
NFT
|)
|)
REFERENCE
+2.5V
Maxim Integrated